X-Planes: Convair X-11
Filed under: aerospace, history, engineering
The Convair X-11 could not stand up. Left standing with the tanks empty and unpressurised it would fold under its own weight, so, by the account of the SM-65 Atlas compilation, it had to be kept inflated with nitrogen at five pounds per square inch even when it carried no propellant. This article is the twelfth in the X-Planes series, following the X-1, the X-2, the X-3, the X-4, the X-5, the X-6, the X-7, the X-8, the X-9, and the X-10.
It is also the vehicle the previous article was about without naming. The X-10 was the testbed for the Navaho, an intercontinental cruise missile that was cancelled in July 1957 because a ballistic weapon of the same range arrives in about thirty-two minutes where an airbreathing one is exposed for a hundred and seventy-two. The X-11 is that ballistic weapon. It is the Atlas A, the first flying article of the programme that killed the Navaho, and it first flew on 11 June 1957, thirty-one days before the Air Force Headquarters message of 12 July 1957 that terminated the Navaho, as the Cape Canaveral launch history of Cleary 1991 The 6555th, Missile and Space Launches Through 1970 records. The official history of the programme is Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960. The standard inventory entry remains Jenkins Landis and Miller 2003 American X-Vehicles, An Inventory X-1 to X-50, the vehicle compilation comes from Miller 2001 The X-Planes, X-1 to X-45, and the structural principle is documented under the name balloon tank.
The Research Question
An intercontinental ballistic missile is a mass-fraction problem before it is anything else, because the rocket equation is unforgiving in a way no other transport relation is.
Why Structure Is the Binding Constraint
The velocity a rocket can reach is
\[\Delta v = v_{e} \ln \frac{m_{0}}{m_{f}}\]where $v_e$ is the effective exhaust velocity and the mass ratio is gross mass over burnout mass. The burnout mass is structure plus payload, so every kilogramme of structure is a kilogramme that must be accelerated to the full burnout velocity and then thrown at the target for no effect. The logarithm is the difficulty. Improving the exhaust velocity gives a linear return, and improving the mass ratio gives a return that is only logarithmic, which means an intercontinental weapon must sit far out on a curve that is flattening under it.
The Atlas achieved a burnout mass of 5,395 kilogrammes on a gross mass of 117,900, which are the Atlas D’s 11,894 and 260,000 pounds in the SM-65 Atlas compilation, so its structural mass fraction is
\[\frac{m_{s}}{m_{0}} = \frac{5395}{117{,}900} = 0.0458\]and its propellant mass fraction is 95.4 percent. The mass ratio is therefore
\[\frac{m_{0}}{m_{f}} = \frac{117{,}900}{5395} = 21.85\]At a specific impulse of 282 seconds the effective exhaust velocity is $v_e = 282 \times 9.80665 = 2765$ metres per second, and the ideal velocity is
\[\Delta v = 2765 \times \ln 21.85 = 8530 \, \text{m/s}\]Four and a half percent is an extraordinary number for a structure that has to survive launch. The Atlas is a fuel tank with an engine bolted underneath and almost nothing else, and the article’s subject is what that costs and what it gains. The relation itself and the design practice built on it are Sutton and Biblarz 2016 Rocket Propulsion Elements, with the period treatment of the limiting mass ratio in Wertheimer 1957 and the gravitational correction that separates ideal from achieved velocity in Sellers 1948 and Feodosiev and Siniarev 1959.
The Payoff, Carried Through to Range
The previous article derived the burnout speed a minimum-energy ballistic trajectory needs to cover ten thousand kilometres, which is 7193 metres per second. Setting that against the ideal velocity above gives the losses the ascent must absorb,
\[v_{\text{loss}} = \Delta v - v_{bo} = 8530 - 7193 = 1337 \, \text{m/s}\]or 15.7 percent of the ideal velocity, a reasonable figure for gravity and drag losses on a vertical-rising ballistic ascent, adopted here as a calibration and not derived. With it fixed, the structural mass can be varied and carried all the way through to a range. Holding the propellant load constant and scaling only the structure,
\[v_{bo}(k) = v_{e} \ln \frac{m_{p} + k m_{s}}{k m_{s}} - v_{\text{loss}}\]and feeding the result into the previous article’s range relation,
\[\sin \frac{\Phi}{2} = \frac{\lambda}{2 - \lambda}, \qquad \lambda = \frac{v_{bo}^{2}}{g R_{e}}, \qquad R = R_{e} \Phi\]gives
| Structure | Burnout speed | Range |
|---|---|---|
| as built | 7193 m/s | 9,999 km |
| 1.5 times | 6134 m/s | 5,676 km |
| 2 times | 5400 m/s | 3,941 km |
| 3 times | 4397 m/s | 2,346 km |
Making the structure half as efficient costs sixty-one percent of the range. A vehicle at one and a half times the Atlas structural mass is not a worse intercontinental missile. It is an intermediate-range missile, a different weapon with a different basing problem and a different strategic meaning. That loss is the argument for the balloon tank, and it explains why a programme accepted a vehicle that cannot be left standing without a nitrogen supply.
The trajectory machinery behind those numbers is period material. Ostner 1962 and Walters 1967 reduce ballistic trajectory computation to what a range could run, and the closed-form treatments are Punga and Campbell 1962 and Bell 1965. Stancil 1963 optimises by steepest ascent, Lubowe 1965 brings dynamic programming to optimum staging, and Randall 1970 traces the effect of staging on the resulting trajectory, with performance bookkeeping in Adams and Stoll 1969 and payload-optimal trajectories in Elliott and Rau 1968.
The caution the table requires is that the loss figure was calibrated so the baseline reproduces the previous article’s ten thousand kilometres, so the first row is fixed by construction. The sensitivity is the result, not the absolute range, and the sensitivity is robust because it depends on the logarithm and not on the calibration.
A Keystone Exercised Early
The keystone quantity of the X-10 was a gyroscope drift rate, which accumulates with time and separates from the bounded accelerometer error only after about forty-eight minutes. Its Cape flights of reported duration ran 51 to 79 minutes, so window length was no obstacle, and the article’s central result was that too few navigator flights were completed to estimate a drift distribution, five in all, two of them aborted. The X-11 has the opposite property, and the contrast is the sharpest the series has yet produced.
The Atlas structure is fully loaded within the first two minutes of flight. Maximum dynamic pressure occurs about a minute after lift-off, and the flight report of the National Aeronautics and Space Administration, NASA, on a later Atlas places its highest oxidizer-tank bending loads between 60 and 90 seconds Lewis Research Center 1968. The highest axial acceleration occurs at booster cutoff, which the later Atlas reached at 5.62 times gravity Lewis Research Center 1968, and both fall inside the 133 second burn of the Convair X-11 compilation. The two loads can be written as fractions of the mission and the comparison is stark. For the Atlas the structurally sizing events occur at
\[\frac{t_{\text{sizing}}}{t_{\text{mission}}} = \frac{133}{1932} = 0.069\]taking the mission as the 1932 second ballistic flight time derived in the previous article, so the structure is finished being tested seven percent of the way through the mission. For the X-10 the corresponding ratio was
\[\frac{t_{\text{leg}}}{t_{\text{mission}}} = \frac{1653}{10{,}333} = 0.16\]for a thousand-kilometre leg at its top speed, and its one reported navigation flight of seventy-nine minutes reached 0.46, yet the keystone was still not settled, because a drift rate is a distribution to be estimated over many flights while a load is applied in full on each one. The X-11 tested its keystone completely in seven percent of its mission, and the X-10 flew nearly half of its mission without completing enough navigation flights to settle its keystone, and the comparison reduces to that sentence. That the structurally sizing events cluster early is no accident of this vehicle but holds for any rocket ascent, and the period literature establishing where they fall runs through Wood 1961 on missile structural dynamics, Gerald and Runyan 1962 on the launch-vehicle case, and the ground-wind and ascent-load material cited below. The general point that a test article need only span the sizing envelope, not the mission, is implicit in structural test practice and is stated directly in Abraham 1963, a study of how to load a large article representatively and not exhaustively. A flight that goes no further than a hundred and twenty kilometres of apogee and about two fifths of the intercontinental burnout speed, as The Flight Test Record computes, still applies every structural load the mission will ever apply. A keystone that is exercised early can be validated cheaply. A keystone that accumulates cannot. The X-11 flew a fraction of the weapon’s mission and tested its keystone completely, and the X-10 flew a fraction of its weapon’s mission and tested its keystone hardly at all, and the difference is not programme competence but the mathematical character of the quantity each was built to establish.
Programme Origin
Convair had been working on long-range missiles since 1946 under project MX-774, a study contract the Army Air Forces awarded in April 1946 and cancelled in July 1947, after which Convair continued part of the work on its own funds Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960. The Air Force returned to Convair with a contract signed on 23 January 1951, designated Project MX-1593, which became the Atlas. Neufeld’s chapter on MX-1593 dates the MX-774 cancellation to July 1948, against July 1947 in his own detailed account of that project and in Dawson and Bowles 2004, and the earlier date is used here. The design authority throughout was Karel Bossart, whose contribution is the pressure-stabilised tank Dawson and Bowles 2004. The idea is older than the Atlas. According to Neufeld, Bossart’s MX-774 design had already removed the stiffeners of the V-2 and obtained its rigidity from nitrogen gas pressure, and the resulting weight programme improved the V-2’s airframe-to-propellant weight ratio by a factor of three. The reported inspiration was a cylindrical party balloon, an anecdote the balloon tank compilation repeats and the programme histories read for this article do not.
The German inheritance that shaped the American ballistic effort generally occupies Neufeld 1995 The Rocket and the Reich, and Walker 2005 Atlas, The Ultimate Weapon is a history of the Atlas whose full title describes it as written by those who built it, with a period account of the ballistic missile division’s evolution in Rockefeller and Alfred 1960. Contemporary treatments of the weapon class are Botterill 1961 and Lenihan 1962, which are useful because they record what was thought at the time. Convair reached the pressure-stabilised structure from an aircraft background and not from a rocket one. Bossart said as much. He had worked on aircraft structures at Sikorsky and Vultee before the missile work, and Dawson and Bowles 2004 record that he always attributed his confidence in the thin-skinned design to that background. A company that builds thin-skinned pressurised fuselages has the instinct that a pressure vessel can be a primary structure, and the monocoque analysis the field already had runs from Hoff 1942, Wang and Ramamritham 1947, and Kaufman 1958.
The programme designation in the record is WS 107A-1, the weapon system number under which Cleary 1991 The 6555th, Missile and Space Launches Through 1970 records the Air Force activating the Atlas and which the Flight Test Working Group reports carry in their titles, and the missile family became SM-65 with variants lettered A through F. The compilations give the X-11 designation to the Atlas A and the X-12 to the Atlas B, which the next article treats, while Parsch 2005 Convair B-65/SM-65/CGM-16/HGM-16 Atlas places both numbers in the plan of 1953, as a single-engine and a three-engine test vehicle ahead of a five-engine prototype. Whether either designation was ever used operationally is not clear from the accessible record, and the Epistemic State says so. What is clear is that these are the fourth and fifth consecutive X numbers attached to vehicles that were never research aircraft, following the X-8, the X-9, and the X-10, and that the pattern the previous article identified, of a separate series being absorbed, not of the X-series broadening on the merits, now has more cases than it had exceptions.
Why the Idea Was Available to Convair and Not to Others
The pressure-stabilised tank is usually told as a flash of insight, and the party-balloon anecdote encourages that. The more useful reading is that Convair was the company most likely to have it, and for a reason unrelated to rockets.
An aircraft company that builds pressurised fuselages already believes that a pressure vessel can be primary structure. A transport fuselage is a thin shell that carries bending, torsion, and cabin pressure at once, and the analysis for it existed, in Hoff 1942, Wang and Ramamritham 1947, and Kaufman 1958. What Convair did was to remove the frames and stringers that a fuselage keeps because it must survive depressurisation, and to accept in exchange a structure that must never be depressurised Dawson and Bowles 2004.
Bossart’s own account of the reasoning, as Dawson and Bowles 2004 quote it from a 1974 interview, runs in the order a structures engineer would take. The tank needed a certain pressure to give the pump its required net positive suction head, so the first question was how thin the skin could be while holding that pressure, and the second was how much stiffening such a skin would need under the flight compression and bending. The answer to the second question was none. The section What the Standing Pressure Does inverts the same reasoning with numbers, starting from the pressure and asking what compression it offsets.
That is a trade an aircraft company can see and a rocket company might not, because it is a trade about what the structure is allowed to fail at and not about how strong it is. The Atlas is not a stronger tank. It is a tank that has been permitted to have a failure mode nobody would tolerate in an aeroplane, in exchange for a mass fraction no other arrangement could reach, and permitting that failure mode is a programme decision, not an engineering one.
The decision also depended on the mission. A weapon is expended, so a structure that cannot survive loss of pressure is acceptable in a way it would not be for something expected to be reused, ferried, stored unattended, or damaged and repaired. The X-10 in the previous article was recoverable and therefore could not make this trade. The two are one designation apart, the first Atlas A flew thirty-one days before the Navaho was terminated, and their structural philosophies are opposite for the same reason their keystones differed.
The One-and-a-Half Stage Arrangement
The Atlas carries three engines and jettisons two of them. All three ignite on the ground, and at booster cutoff the two outboard engines and their skirt are dropped while the sustainer continues on the same tanks SM-65 Atlas. The arrangement exists because igniting a large liquid engine at altitude was not trusted when Convair conceived it after the MX-774 cancellation Parsch 2005 Convair B-65/SM-65/CGM-16/HGM-16 Atlas, so the vehicle stages its engines without staging its tanks.
The Atlas A did not stage at all. It flew with the two booster engines and no sustainer, which is why Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960 describes the first flight as rising only a few thousand feet before one of its two engines failed, and the Convair X-11 compilation states that the sustainer engine was omitted. The article’s account of staging therefore concerns the Atlas that the A was prototyping, and the A itself tested the tank, the booster engines and the launch.
That decision interacts directly with the keystone. A conventional two-stage vehicle discards a whole tank set, and that discard supplies most of the structural benefit of staging. The Atlas discards only engines and skirt, so it gets a smaller staging benefit and has to make it up in structural efficiency. The balloon tank and the one-and-a-half stage arrangement are the same decision seen twice, since the vehicle that cannot drop its tanks must make its tanks weigh almost nothing. Schurmann 1957, Parkyn 1958, and Wertheimer 1957 optimise staging for the period, with the gravitational term in Sellers 1948.
Sizing From First Principles
How Thin the Shell Is
The Atlas is a cylinder ten feet in diameter and seventy-five feet long, the dimensions Cleary 1991 The 6555th, Missile and Space Launches Through 1970 gives for the missiles of all four test series, and the 75 feet 10 inches of the SM-65 Atlas compilation, 23.11 metres, is the length used below. The tank radius is
\[r = \frac{10 \times 0.3048}{2} = 1.524 \, \text{m}\]and the skin is 301 extra-full-hard stainless steel between 0.014 and 0.037 inches thick, which is 0.356 to 0.940 millimetres. Those gauges are the ones NASA’s propellant-tank drawing of a later Atlas gives, station by station from the top of the oxidizer tank to the aft bulkhead Lewis Research Center 1968, and no drawing of the Atlas A’s own gauges has been found. The ratio that governs a thin shell is radius over thickness,
\[\frac{r}{t} = \frac{1.524}{0.000356} = 4286 \qquad \frac{r}{t} = \frac{1.524}{0.000940} = 1622\]Those numbers are hard to feel, so here is a benchmark. An aluminium drink can has a radius near 33 millimetres, and its wall is taken here as 0.1 millimetres, giving
\[\left. \frac{r}{t} \right|_{\text{can}} = \frac{0.033}{0.0001} = 330\]The Atlas skin is between five and thirteen times thinner in proportion than a drink can.
Membrane Stress and the Tapered Gauge
A pressurised thin cylinder carries its load in membrane tension. The hoop stress is
\[\sigma_{\theta} = \frac{p r}{t}\]and the axial stress from the same pressure acting on the ends is half of it,
\[\sigma_{z} = \frac{p r}{2 t}\]The ratio is fixed by geometry and not by design,
\[\frac{\sigma_{\theta}}{\sigma_{z}} = 2\]which has a consequence every pressure vessel shares. The hoop direction is always the first to yield, so a tank that bursts splits along its length and not around its circumference, and the weld that runs longitudinally is therefore the one that decides the vehicle.
The flight pressures are on record for that later Atlas. Its airborne regulators held the fuel tank between 57 and 60 pounds per square inch gauge and the oxidizer tank between 28.5 and 31 Lewis Research Center 1968, and the heaviest gauges lie in the fuel tank. At 60 pounds per square inch and the heavy gauge this gives
\[\sigma_{\theta} = \frac{413{,}685 \times 1.524}{0.000940} = 671 \, \text{MPa}\]against a yield taken as 965 megapascals for the material in its extra-full-hard condition, a margin of 1.44. At the light gauge the same pressure would give
\[\sigma_{\theta} = \frac{413{,}685 \times 1.524}{0.000356} = 1773 \, \text{MPa}\]which exceeds the ultimate strength of the material. The light gauge therefore cannot exist anywhere the pressure is high. The result does not discredit the calculation. It demonstrates the design rule. The drawing bears it out, because the 0.014 inch gauge sits at the top of the oxidizer tank Lewis Research Center 1968, where the regulated pressure is about half the fuel tank’s, and at 30 pounds per square inch it carries
\[\sigma_{\theta} = \frac{206{,}843 \times 1.524}{0.000356} = 885 \, \text{MPa}\]a margin of 1.09 on the yield. The gauge is tapered to the local stress, and the local stress is dominated not by ullage pressure but by the head of propellant above the station under acceleration,
\[\Delta p = \rho \, n \, g \, h\]For liquid oxygen at 1141 kilogrammes per cubic metre, ten metres of head, and six times gravity near burnout, close to the 5.62 times gravity the later Atlas reached at booster cutoff Lewis Research Center 1968,
\[\Delta p = 1141 \times 6 \times 9.80665 \times 10 = 671{,}000 \, \text{Pa} = 97 \, \text{psi}\]which is more than one and a half times the ullage pressure. The bottom of the tank is the hardest-worked part of the vehicle and it is thickest there, and the taper is possible only because a membrane structure can be thinned where the load is small without any of the discontinuities that a stiffened structure would introduce. Period membrane analysis is in Bahiman and Thole 1965, with monocoque ring analysis in Hoff 1942 and material data in Manning and Price 1961, Johnson and Kelsen 1969, and Kuentz 1969.
The Common Bulkhead
The Atlas carries liquid oxygen and kerosene in one shell divided by a single dome, not in two tanks with structure between them Lewis Research Center 1968. The saving is one pressure dome and the intertank barrel that would separate them, and for a shell of this diameter that is a large fraction of the dry mass. A hemispherical dome of radius $r$ has an area of
\[A_{\text{dome}} = 2 \pi r^{2} = 2 \pi \times 1.524^{2} = 14.6 \, \text{m}^{2}\]and an intertank barrel long enough to clear two domes adds roughly
\[A_{\text{barrel}} = 2 \pi r \times 2r = 4 \pi r^{2} = 29.2 \, \text{m}^{2}\]so the common bulkhead removes on the order of forty square metres of shell, which at the average gauge is
\[m_{\text{saved}} = 43.8 \times 0.000648 \times 8000 = 227 \, \text{kg}\]or about four percent of the empty vehicle from one design decision. The cost is that the bulkhead now separates a cryogen at 90 kelvin from a hydrocarbon at ambient temperature, so it must insulate as well as carry load, and a leak across it mixes the propellants inside the vehicle. The common bulkhead is the other Atlas idea still in use, and the Centaur upper stage separates its propellants with one Centaur rocket stage, for the reason computed here. Weiss and Goodman 1960 takes up the insulation problem it creates, and the vehicle that took the arrangement furthest in the period, and which kept the balloon tank as well, is described in Chitwood 1962. Membrane analysis of the domes themselves appears in Bahiman and Thole 1965 and Adam and King 1965.
Tank Volume and the Supporting Gas
The tank volume follows from the geometry,
\[V = \pi r^{2} L = \pi \times 1.524^{2} \times 18 = 131 \, \text{m}^{3}\]and at a mixture ratio near 2.25 the propellant load divides into
\[m_{\text{LOX}} = m_{p} \frac{MR}{1 + MR} = 112{,}505 \times \frac{2.25}{3.25} = 77{,}888 \, \text{kg}\]with the balance of 34,617 kilogrammes as kerosene. At densities of 1141 and 800 kilogrammes per cubic metre the volumes are 68.3 and 43.3 cubic metres, so the propellant occupies
\[\frac{111.5}{131} = 0.85\]of the tank, leaving fifteen percent for ullage, insulation, and the domes. The record does not confirm the assumed length. The tank stations of the later Atlas in Lewis Research Center 1968 run from 570 to 1,198 inches, so the whole tank, domes included, spans
\[\ell = (1198 - 570) \times 0.0254 = 15.95 \, \text{m}\]and the 18 metres assumed here is long by a factor of 1.13. Treating even that span as a full cylinder gives
\[V' = \pi \times 1.524^{2} \times 15.95 = 116.4 \, \text{m}^{3}, \qquad \frac{111.5}{116.4} = 0.958\]so the volume, the skin mass and the nitrogen mass below are overstated by up to thirteen percent, and the fill fraction of 0.85 is not evidence for the assumed length.
Against all of that, the mass of nitrogen needed to hold five pounds per square inch of gauge pressure through the tank volume is
\[m_{N_{2}} = \frac{p V}{R T} = \frac{34{,}474 \times 131}{296.8 \times 290} = 52.6 \, \text{kg}\]Fifty-three kilogrammes of gas holds up five thousand three hundred and ninety-five kilogrammes of steel, a ratio of 103 to one. That single comparison states the design in one line.
Unlike the rest of the vehicle, the gas is recoverable and cheap, and that part of the bargain made it acceptable. Nitrogen at five pounds per square inch is nearly free and weighs too little to matter, and a structure that trades steel for nitrogen is trading an expensive mass for a free one.
Getting the gas in and keeping it there is a separate discipline, and the period worked it thoroughly because every large liquid vehicle needed it. Kaplan 1961 selects a pressurisation system, autogenous systems that pressurise with propellant vapour are Morey and Koshar 1961 and Coxe and Tatom 1962, pressurised transfer and discharge of cryogens are Humphrey 1961 and Nein and Head 1962, and the dilution and conditioning problems that arise before launch are Greenfield 1960, with test facility practice in Mandell and White 1960. On a conventional vehicle this apparatus feeds the engines. On this one it also holds the vehicle up, so a pressurisation fault here is a structural event.
A useful figure of merit for a tank is its mass per unit of volume contained,
\[\eta_{\text{tank}} = \frac{m_{\text{skin}}}{V} = \frac{893}{131} = 6.8 \, \text{kg/m}^{3}\]which can be read as the penalty paid for carrying a cubic metre of propellant. Against a propellant density averaging
\[\bar{\rho}_{p} = \frac{m_{p}}{V_{p}} = \frac{112{,}505}{111.5} = 1009 \, \text{kg/m}^{3}\]the tank costs about eight kilogrammes for every tonne of propellant it holds, since 893 kilogrammes of skin hold 112.5 tonnes. That figure is what makes a mass ratio of twenty-two possible.
Buckling as the Governing Failure Mode
A thin cylinder in axial compression does not fail by crushing. It buckles, and the classical critical stress is
\[\sigma_{cr} = \frac{E t}{r \sqrt{3 (1 - \nu^{2})}}\]which for the heavy gauge at a Young’s modulus of 193 gigapascals gives
\[\sigma_{cr} = \frac{193 \times 10^{9} \times 0.000940}{1.524 \times 1.652} = 72.0 \, \text{MPa}\]and for the light gauge 27.3 megapascals. That figure is not what a real shell achieves. Thin cylinders buckle far below the classical value because the post-buckling equilibrium path falls away steeply and any small imperfection lets the shell find it, the result of von Karman and Tsien 1941 and the post-buckling behaviour of Michielsen 1948. Design practice applies a knockdown factor. NASA’s design criterion gives about 0.18 at a radius-to-thickness ratio of 1,500, the limit of the test data behind it, and less beyond NASA 1968 Buckling of Thin-Walled Circular Cylinders, so the factor of 0.2 adopted here is slightly unconservative, giving an allowable of
\[\sigma_{\text{allow}} = 0.2 \times 72.0 = 14.4 \, \text{MPa}\]for the heavy gauge and 5.5 megapascals for the light one. A structure whose tensile capacity is 965 megapascals has a compressive capacity of five, a ratio of nearly two hundred, and that asymmetry is the reason the design exists.
The other buckling mode needs ruling out explicitly, because a twenty-three metre column is an obvious candidate for it. Treating the vehicle as a cantilever beam of thin-walled section, the second moment of area is
\[I = \pi r^{3} t = \pi \times 1.524^{3} \times 0.000648 = 7.20 \times 10^{-3} \, \text{m}^{4}\]and the Euler critical load with an effective length factor of two for a fixed base and free top is
\[P_{cr} = \frac{\pi^{2} E I}{(K L)^{2}} = \frac{\pi^{2} \times 193 \times 10^{9} \times 7.20 \times 10^{-3}}{(2 \times 23.11)^{2}} = 6.42 \, \text{MN}\]against an empty weight of 52.9 kilonewtons, a margin of 121. It does not fold as a column. It crumples as a shell, and the distinction matters because the two failure modes are separated by two orders of magnitude and only one of them is helped by pressure. Shell stability work of the period spans Nickell 1961, Hausrath and Dittoe 1962, Hoff et al 1962, and Bozich 1967, with the external-pressure case in Shaw et al 1952 and Reynolds 1960, the conical case in Mescall 1961, torsional buckling in Mow and Sadowsky 1962, and dynamic buckling in Coppa and Nash 1962 and Coppa and Nash 1964. The alternatives to a bare pressurised shell were being measured at the same time, with stiffener sizing in Nott 1963 and sandwich construction under combined loading in Wang et al 1953, and the Atlas decision is only intelligible against that comparison.
What the Standing Pressure Does
Internal pressure produces axial tension, and a fibre that is in tension cannot buckle. The tension from the standing nitrogen pressure alone is
\[\sigma_{z} = \frac{34{,}474 \times 1.524}{2 \times 0.000940} = 27.9 \, \text{MPa}\]at the heavy gauge and 73.9 megapascals at the light one. Set those against the knocked-down buckling allowables of 14.4 and 5.5 megapascals respectively and the result is stark. Five pounds per square inch of nitrogen roughly doubles the effective compressive capability of the heavy gauge and multiplies the light gauge by more than thirteen. The pressure is not a convenience. It is the larger part of the structure.
The relation can also be inverted, and inverting it explains where the number five came from. Requiring the axial tension from pressure to equal the knocked-down buckling allowable gives
\[p_{\text{req}} = \frac{2 t \sigma_{\text{allow}}}{r}\]which at the heavy gauge is
\[p_{\text{req}} = \frac{2 \times 0.000940 \times 14.4 \times 10^{6}}{1.524} = 17{,}768 \, \text{Pa} = 2.58 \, \text{psi}\]and at the light gauge only 0.37 pounds per square inch, because the buckling allowable falls faster with thickness than the pressure tension does. The governing case is the heavy gauge and it needs 2.58 pounds per square inch, so the reported five-pound standing specification carries a margin of 1.94 on the calculation performed here.
The relation used here is a first-order one and the period had a better one. Peterson 1960 correlates the measured buckling strength of pressurised cylinders against the pressure parameter directly, the empirical form the design offices used, and Weingarten 1962 extends it. Why a correlation was needed in place of a theory appears in Babcock and Sechler 1962 and Babcock and Sechler 1963, which measure how much of the classical strength an initial imperfection removes, with the post-buckling behaviour that makes the sensitivity so severe in Thielemann 1962 and Greenspon 1963. A specification that lands at roughly twice the computed requirement is what a designer writes when the computed requirement rests on a knockdown factor he does not trust, and the factor adopted above is such a factor.
The cleanest statement of the principle is in bending. For a thin-walled cylinder the second moment of area is $I = \pi r^{3} t$, so a bending moment produces an extreme-fibre stress of $M r / I$. Setting that equal to the axial tension from pressure gives the moment at which the most compressed fibre first reaches zero stress,
\[\frac{M r}{\pi r^{3} t} = \frac{p r}{2 t} \quad \Longrightarrow \quad M_{\text{crit}} = \frac{\pi p r^{3}}{2}\]The thickness cancels. The moment a pressure-stabilised cylinder can carry before any part of it goes into compression depends on the pressure and the radius and not at all on how thin the skin is. That independence is the mathematical form of the claim that the pressure is doing the work. At the standing pressure this is
\[M_{\text{crit}} = \frac{\pi \times 34{,}474 \times 1.524^{3}}{2} = 0.192 \, \text{MN m}\]equivalent to a lateral force of 8.3 kilonewtons at the top of a 23 metre vehicle, and at flight pressure it is 2.30 meganewton metres, or 99.5 kilonewtons. A missile standing on the pad in a wind is held up by a pressure a bicycle tyre would find low, and the flight case is twelve times stiffer because the tanks are pressurised harder once loaded.
That moment converts to a wind speed, the form an operations manual would want. Taking the wind as a uniform load on a cylinder of drag coefficient 1.2, the drag force is $F = \tfrac{1}{2} \rho V^{2} C_{D} D L$ acting at mid-height, so the moment at the base is
\[M = \tfrac{1}{4} \rho V^{2} C_{D} D L^{2}\]and inverting it for the standing case gives
\[V = \sqrt{\frac{4 M_{\text{crit}}}{\rho C_{D} D L^{2}}} = \sqrt{\frac{4 \times 1.917 \times 10^{5}}{1.225 \times 1.2 \times 3.048 \times 23.11^{2}}} = 17.9 \, \text{m/s}\]or thirty-five knots before any fibre of the standing vehicle goes into compression, falling to about twenty-eight knots with a factor of 1.5 applied to the moment. At flight pressure the same relation gives 120 knots.
Two things follow. The standing limit is an ordinary windy day. The ground-wind literature cited below was therefore no academic interest for this programme, and a vehicle left on the pad through weather is at risk in a way a stiffened one is not. And the margin improves by a factor of three and a half the moment the tanks are pressurised for flight, so the dangerous condition is the one that lasts for days and not the one that lasts for minutes. That inversion, in which the vehicle is most fragile when nothing is happening to it, is the operational signature of the design. The measurement this section describes was carried out. Miller and Gerus 1966 reports the bending strength of a large thin-walled pressure-stabilised cylinder, testing the relation derived above on hardware of the right size, and it is the most directly relevant document found for this article. Ichino and Takahashi 1965 treats the non-symmetrical bending state of such a shell, Ugural and Cheng 1968 takes pure bending, and Kempner and Chen 1974 handles the oval case that an imperfect cylinder becomes.
Pressure-stabilised beams under load are treated directly by Steeves 1975 and Steeves 1975. Weingarten 1962 isolates the effect of internal pressure on cylinder buckling, and collapse tests of pressurised membrane-like cylinders are Leaumont 1965, with monocoque dome stability in Adam and King 1965 and creep buckling, which matters for a tank held pressurised for long periods, in Samuelson 1968.
The Mass of the Structure
The bare skin of a tank eighteen metres long at the average gauge masses
\[m_{\text{skin}} = 2 \pi r L t \rho = 2 \pi \times 1.524 \times 18 \times 0.000648 \times 8000 = 893 \, \text{kg}\]or 16.5 percent of the empty vehicle. A stiffened design carrying the same compression without pressure needs frames and stringers, taken here as adding forty to sixty percent above bare skin, which would take the tank alone to between 1250 and 1430 kilogrammes. That increment is real but it is not by itself the factor of one and a half the range table above uses, and the article does not claim it is. The sensitivity table is a sensitivity table. What the comparison does establish is the direction and the order, and the direction is the one the programme chose.
The general form of the comparison shows where the advantage comes from. A pressure-stabilised wall is sized by tension,
\[t_{\text{press}} = \frac{p r}{\sigma_{\text{allow,tension}}}\]and a stiffened wall carrying the same vehicle is sized by an equivalent compressive allowable that includes its stiffening,
\[t_{\text{stiff}} = \frac{N_{x}}{\sigma_{\text{allow,compression}}}\]so the ratio of the two depends on the ratio of the allowables, which for this material and this radius-to-thickness ratio is
\[\frac{\sigma_{\text{tension}}}{\sigma_{\text{compression}}} = \frac{965}{14.4} = 67\]The tensile allowable is sixty-seven times the compressive one. That factor does not translate directly into a mass ratio, because the two walls carry different loads and the stiffened one adds material in a different place, but it is the reason the comparison comes out the way it does and it is the number a designer in 1951 would have been looking at. Stiffened-shell optimisation as the period practised it appears in Nickell 1961 and Nott 1963, the structural design practice is codified in Bruhn 1973 Analysis and Design of Flight Vehicle Structures, and the material behaviour that fixes the tensile allowable comes from Manning and Price 1961, Johnson and Kelsen 1969, and Kuentz 1969.
Dependent Systems
The Engines and the Ground Start
The Atlas A carried two booster engines whose initial thrust, by the official history, was raised during the series from 270,000 to 300,000 pounds Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960. The summary figure of the Convair X-11 compilation, 341,128 pounds, which is 1.517 meganewtons, exceeds both, and the same compilation’s narrative gives the early engines 135,000 pounds each and the improved engines from the fifth flight 150,000, which agree with the official figures. At the Atlas D gross mass this summary thrust gives a lift-off thrust-to-weight of
\[\frac{T}{W} = \frac{1.517 \times 10^{6}}{117{,}900 \times 9.80665} = 1.31\]a figure for the family and not for the Atlas A. Against the 181,000 pounds at which Cleary 1991 The 6555th, Missile and Space Launches Through 1970 gives the Series A test missiles, the early engines give
\[\left. \frac{T}{W} \right|_{A} = \frac{2 \times 135{,}000}{181{,}000} = 1.49\]so the Atlas A left the pad harder than the family figure suggests. For the family figure the propellant flow follows from the exhaust velocity,
\[\dot{m} = \frac{T}{v_{e}} = \frac{1.517 \times 10^{6}}{2765} = 549 \, \text{kg/s}\]so a 133 second burn, the compilation’s figure against the two full minutes of powered flight Neufeld gives for missile 12A, consumes 73.0 tonnes, or 65 percent of the full Atlas propellant load. Summerfield 1960 sets out liquid engine practice of the period, with a released Rocketdyne specification for the sustainer engine, which the Atlas A did not carry, in Scott 1963 and the specific-impulse bookkeeping in Dafler 1962. Combustion instability, which was the era’s most persistent liquid-engine problem, is Grey 1953, Matthews 1957, and Harrje 1959. Hegg 1964 designs the gimbal actuation for thrust vector control, and the turbopump that feeds the arrangement has a design-criteria treatment in Design criteria monograph on 1975, with propellant flow calibration in Berg 1968.
Ascent Loads, and the Worst Two Minutes
The structural case is set by the ascent, and within the ascent by two moments. Dynamic pressure rises as the vehicle accelerates and falls as the atmosphere thins, so it peaks,
\[q = \tfrac{1}{2} \rho(h) v(h)^{2}\]and for a vertically rising vehicle the peak can be located by differentiating. With an exponential atmosphere of scale height $H$ and a constant acceleration $a$, the dynamic pressure is
\[q(t) = \tfrac{1}{2} \rho_{0} e^{-a t^{2} / (2H)} (a t)^{2}\]and setting the derivative to zero gives
\[\frac{dq}{dt} = 0 \quad \Longrightarrow \quad t_{q} = \sqrt{\frac{2H}{a}}\]For a scale height of 7200 metres and an acceleration of three metres per second squared net of gravity,
\[t_{q} = \sqrt{\frac{2 \times 7200}{3}} = 69 \, \text{s}\]at an altitude of $\tfrac{1}{2} a t_{q}^{2} = H = 7.2$ kilometres, the pleasing result that a constant-acceleration vertical ascent reaches maximum dynamic pressure at exactly one scale height, independent of the acceleration. The value at that point follows by substitution,
\[q_{\max} = \tfrac{1}{2} \rho_{0} e^{-1} (a t_{q})^{2} = \tfrac{1}{2} \rho_{0} e^{-1} \times 2 a H\]which for the same numbers gives
\[q_{\max} = \tfrac{1}{2} \times 1.225 \times 0.3679 \times 2 \times 3 \times 7200 = 9736 \, \text{Pa}\]or about 1.4 pounds per square inch of dynamic pressure. In this idealised ascent the aerodynamic pressure is two percent of the pressure the vehicle carries internally. The later Atlas’s flight report measured a peak near 800 pounds per square foot, about 5.6 pounds per square inch, between seventy and eighty seconds after lift-off Lewis Research Center 1968, which is still under a tenth of the fuel-tank pressure, so the conclusion about where this structure’s loads come from survives the idealisation. It is a pressure vessel that happens to fly, not an aeroplane that happens to hold propellant. The real trajectory is not vertical and the acceleration is not constant, so the time is a little over a minute, consistent with the 60 to 90 second window of highest bending loads in the later Atlas’s flight report, but the structure of the answer is the structure of the real one. Axial acceleration does the opposite. It grows monotonically as propellant burns away,
\[n(t) = \frac{T}{\left( m_{0} - \dot{m} t \right) g}\]so at lift-off it is 1.31 and near booster cutoff, with two thirds of the propellant gone, it approaches
\[n = \frac{1.517 \times 10^{6}}{\left( 117{,}900 - 72{,}977 \right) \times 9.80665} = 3.44\]The worst bending load and the worst axial load therefore arrive at different times, which is fortunate, because a pressure-stabilised structure that had to carry both at once would need a pressure it could not contain. Ascent load analysis of the period begins with Wood 1961, with the aerodynamic side in Binion et al 1962.
The load case that is easiest to forget is the one before the engines light. A slender missile standing on a pad sheds vortices in a steady wind and can be driven into resonant transverse oscillation, and for a pressure-stabilised vehicle the pressure that resists it is the standing five pounds rather than the flight sixty. The period treated this as a distinct subject, in Bohne 1964 and Buell 1964 on the sources of ground-wind loads, Simon 1965 on the flow-field parameters that govern the oscillation, Jones and Farmer 1966 and Jones and Farmer 1967 on wind-tunnel studies of the Saturn vehicles, Coffin 1970 on simulating the response, and the extreme-value statistics that decide what wind to design against in Miller 1967. A whole meeting was devoted to it, reported in Meeting on Ground Wind 1966. The axial equivalent, in which an elastically supported vehicle oscillates along its own axis on the pad, is Radovcich 1965.
Angle of attack is what turns dynamic pressure into a bending moment. The normal force on a slender body at small incidence is
\[N = q S C_{N\alpha} \alpha\]and taking the reference area as the cross-section, $S = \pi r^{2} = 7.30$ square metres, a normal-force slope of two per radian, and three degrees of incidence at maximum dynamic pressure,
\[N = 9736 \times 7.30 \times 2 \times 0.0524 = 7447 \, \text{N}\]which acting at a lever arm of ten metres gives a bending moment of 74 kilonewton metres. Against the pressure-stabilised capacity of 2.30 meganewton metres at flight pressure this is three percent, so there is an enormous margin in bending while pressurised and essentially none while not. The incidence comes from wind. A vehicle rising through a shear layer sees a lateral relative wind and must either fly at an angle to it, which costs bending moment, or steer into it, which costs trajectory. Load-relief steering exists because of that trade, and its modern form is treated below.
The Sustainer and the Value of Staging
Dropping two engines and a skirt at booster cutoff removes mass that the remaining propellant would otherwise have to accelerate. The benefit is the difference between finishing the burn with and without that mass,
\[\Delta v_{\text{gain}} = v_{e} \left[ \ln \frac{m_{1}}{m_{f}} - \ln \frac{m_{1} + m_{j}}{m_{f} + m_{j}} \right]\]where $m_j$ is the jettisoned mass and $m_1$ is the mass at staging. Evaluated, that expression overturns the obvious reading.
The booster phase consumes $\dot{m} t_b = 549 \times 133 = 72{,}977$ kilogrammes, leaving
\[m_{\text{sust}} = m_{p} - \dot{m} t_{b} = 112{,}505 - 72{,}977 = 39{,}528 \, \text{kg}\]for the sustainer, so the mass at staging after jettison is $m_1 = 5395 + 39{,}528 = 44{,}923$ kilogrammes. Taking a jettisoned booster package of three tonnes, the sustainer phase delivers
\[\Delta v_{\text{dropped}} = 2765 \ln \frac{44{,}923}{5395} = 5861 \, \text{m/s}\]if the package is discarded and
\[\Delta v_{\text{carried}} = 2765 \ln \frac{47{,}923}{8395} = 4817 \, \text{m/s}\]if it is not, so the gain is
\[\Delta v_{\text{gain}} = 5861 - 4817 = 1044 \, \text{m/s}\]That is twelve percent of the ideal velocity for the sake of dropping three tonnes of engine. The intuition that a half-stage gives up most of the benefit of staging is wrong. The benefit of staging depends on the ratio of jettisoned mass to burnout mass, not to gross mass. Three tonnes against a burnout mass of five and a half is an enormous fraction, even though it is under three percent of the vehicle at lift-off.
The one-and-a-half stage arrangement therefore captures most of the value of staging while avoiding an altitude ignition, a considerably better bargain than it looks, and the balloon tank is what makes the burnout mass small enough for the bargain to be that good. The two decisions are complementary. Staging optimisation of the period is Schurmann 1957 and Parkyn 1958, and the separation event itself, which imposes its own aerodynamic and jet-interference loads, is Binion et al 1962 and Binion 1964.
Structural Proof Testing by Pressure
A stiffened shell fails by buckling under compression, and applying a representative compressive load to a twenty-three metre cylinder requires a test rig comparable in size and cost to the article. A pressure-stabilised tank fails by yielding under tension, and applying a representative tensile load requires a compressor. Every tank can therefore be proof-tested to a defined fraction of its failure mode before it ever flies, and a stiffened alternative cannot be.
The proof factor relates the test pressure to the design pressure,
\[k_{p} = \frac{p_{\text{proof}}}{p_{\text{design}}}\]and a factor between 1.1 and 1.25 is taken here, with the burst factor higher still,
\[k_{b} = \frac{p_{\text{burst}}}{p_{\text{design}}} \geq 1.5\]which at the flight pressure and heavy gauge implies a burst hoop stress of
\[\sigma_{\text{burst}} = 1.5 \times 671 = 1007 \, \text{MPa}\]against an assumed ultimate of 1276, a margin of 1.27 on the material rather than on the design. Applying a proof factor of 1.25 to the 60 pound flight pressure gives a hoop stress at the heavy gauge of
\[\sigma_{\theta} = 1.25 \times 671 = 839 \, \text{MPa}\]or 87 percent of the assumed yield, so the proof test is a genuine test and not a formality. Abraham 1963 shows how the period tested large articles structurally, with the combined static and dynamic loading problem in Roberts and Wilhem 1964. The design’s failure mode doubles as its acceptance test, a real and rarely stated advantage of the balloon tank over a stiffened shell whose critical load can only be estimated.
A Thermal Environment Mild by the Standards of This Series
The X-10 article computed a recovery temperature of 636 kelvin for a vehicle cruising at Mach 3.25 for three hours, and concluded that aluminium would not serve. A ballistic booster has the opposite problem. It passes through the dense atmosphere quickly and is out of it before the skin can equilibrate,
\[\tau_{\text{skin}} = \frac{\rho c \delta}{h}\]and for stainless steel at the Atlas gauge, taking a density of 8000 kilogrammes per cubic metre, a specific heat of 500 joules per kilogramme kelvin, and a convective coefficient of 200 watts per square metre kelvin,
\[\tau_{\text{skin}} = \frac{8000 \times 500 \times 0.00094}{200} = 18.8 \, \text{s}\]comparable to, and not short against, the time spent near maximum dynamic pressure. The skin does partially equilibrate, but it does so against a recovery temperature that is only high for a few tens of seconds, and the propellant behind it is a very large heat sink at cryogenic temperature. The structural problem is therefore mechanical rather than thermal. Aerodynamic heating of entry vehicles is treated in Allen 1966 and Murphy and Rubesin 1965, and Winstead 1966 handles the thermal control of a cryogenic vehicle, with propellant leakage effects in Nast and Williams 1967.
The Acoustic and Vibration Environment
A rocket at lift-off sits in its own exhaust noise, and the overall sound pressure level near the base of a large booster reaches values that damage thin panels by fatigue rather than by static overload. The relation that governs the damage is not a stress but a spectrum, and the accumulated damage over an exposure is set by a cycle count. A thin welded shell is the structure most exposed to that mechanism, and the weld lines are where it acts.
The level can be estimated. The mechanical power in the jet is
\[P_{\text{jet}} = \tfrac{1}{2} \dot{m} v_{e}^{2} = \tfrac{1}{2} \times 549 \times 2765^{2} = 2.10 \, \text{GW}\]of which half of one percent is assumed here to become sound, so the radiated acoustic power is about 10.5 megawatts. Spreading that over a hemisphere at thirty metres gives an intensity of
\[I = \frac{P_{\text{ac}}}{2 \pi d^{2}} = \frac{1.05 \times 10^{7}}{2 \pi \times 900} = 1855 \, \text{W/m}^{2}\]and a sound pressure level of
\[L_{p} = 10 \log_{10} \frac{I}{10^{-12}} = 153 \, \text{dB}\]falling to 142 decibels at a hundred metres. The pressure fluctuation follows from the intensity directly, which avoids rounding the level,
\[p_{\text{rms}} = \sqrt{I \rho c} = \sqrt{1855 \times 1.225 \times 343} = 883 \, \text{Pa}\]so a hundred and fifty-three decibels is a pressure fluctuation of about 0.13 pounds per square inch, which is small against the sixty inside the tank but is applied at hundreds of hertz for the duration of the lift-off transient, and fatigue does not care about the mean. The period studied the mechanism as a discipline under the name sonic fatigue. Vreeland 1960 gives a test method, Wang 1966 a prediction model, Ballentine et al 1966 the combined-environment case, and Hines 1966 the specimen fabrication such tests require. The statistical machinery beneath it comes from Crandall and Mark 1963, with transmission in Crandall and Mark 1963 and failure in Crandall and Mark 1963. Boyd 1963 measured the environment at the launch site itself for Cape Canaveral, with facility acoustics in Tyzzer and Pernet 1964, the launch-vehicle dynamics overview in Hung and Hunt 1964, and vibration environment specification and correlation in Snyder et al 1974, with the acoustic measurement practice of the period in Keast 1961.
Slosh in an Unbaffled Tank
A tank with no internal structure has nothing to break up the free surface of its propellant, and a large moving mass of liquid inside a vehicle being steered by thrust vectoring couples into the control loop. The same decision that removed the stringers removed the natural baffling, so any baffle has to be added back deliberately as internal structure, as the slosh baffle in the hydrogen tank of the later Centaur shows Lewis Research Center 1968.
The frequency that matters is the first lateral sloshing mode of a cylindrical tank, which for fill depths that are not shallow is
\[\omega_{s} = \sqrt{\frac{1.841 \, g_{\text{eff}}}{r} \tanh \frac{1.841 h}{r}}\]and under acceleration the effective gravity is the axial load factor times $g$, so the slosh frequency rises through the flight as the vehicle accelerates and falls as the tank drains. At the Atlas radius and a load factor of three the deep-tank limit gives
\[\omega_{s} = \sqrt{\frac{1.841 \times 3 \times 9.80665}{1.524}} = 5.96 \, \text{rad/s}\]or 0.95 hertz, which sits uncomfortably close to the bandwidth of a thrust-vector control loop. Stephens 1965 damps slosh with flexible baffles, with measurement in Wilner et al 1960 and the shell-vibration side in DIGiovanii and Dugundji 1965.
Pogo and the Coupling of Structure and Propulsion
A liquid rocket whose structure has a longitudinal mode near the frequency at which its feed system and engine respond can close a loop through the propellant column, and the vehicle oscillates axially. Rubin 1965 and Rubin 1966 set out the mechanism, the naming and early study are Goldman and Miessner 1965 and Goldman and Miessner 1966. Marcus et al 1969 develops the accumulator remedy, and the best-known case is Hill et al 1969 on Saturn V. A pressure-stabilised vehicle is unusually exposed to this, because its longitudinal stiffness is partly a function of tank pressure and therefore changes as the tanks drain.
The scale of the problem is set by how soft the vehicle is. A solid steel bar of the same length has a fixed-free axial mode at
\[f_{1} = \frac{c}{4L} = \frac{1}{4L} \sqrt{\frac{E}{\rho}} = \frac{4912}{4 \times 23.11} = 53 \, \text{Hz}\]but a launch vehicle is not a solid bar. It is a thin shell containing a large mass of liquid, and its first axial mode sits far lower, uncomfortably close to the response of a feed system and turbopump. The instability condition is that the structural mode and the propulsion response overlap in frequency with enough gain around the loop, and both quantities move during the flight, the structure because the tanks drain and the propulsion because the inlet pressure falls. For missile structural dynamics in the period the sources are Wood 1961, with clustered-vehicle bending in Loewy 1965, shell vibration in DIGiovanii and Dugundji 1965, the ribbed-shell stability case in Amiro 1962, and the launch-vehicle overview in Gerald and Runyan 1962.
Guidance Absent from the Atlas A
The Atlas A flew without an operational guidance system, since the set first carried on missile 12A was flown open loop for evaluation Convair X-11. Its flights were programmed, and the guidance question fell to later variants and to the radio-inertial system the Atlas A through D used before an all-inertial set replaced it on the E and F SM-65 Atlas. Ballistic missile guidance of the period appears in Whitcombe 1961. Slifka 1960 field-tests such a system, the measurement problem of establishing where a missile went is Cooper 1961, the explicit guidance equations that a self-contained system must solve are MacPherson 1963, and a later integrated formulation is Russell 1964 with Larson 1965 on Titan III and cost-driven inertial development in Crose 1965. The simulation apparatus such work depends on is Juarez 1961.
The accuracy relation matters here even though the X-11 did not exercise it, because it explains why a ballistic weapon is a velocity-control problem rather than a navigation problem, and because it follows by derivation from the range relation the previous article established.
That relation gives the range angle through
\[\sin \frac{\Phi}{2} = \frac{\lambda}{2 - \lambda}, \qquad \lambda = \frac{v^{2}}{g R_{e}}, \qquad R = R_{e} \Phi\]and the sensitivity of range to burnout speed follows by chaining the three derivatives. From the definition of $\lambda$,
\[\frac{d \lambda}{\lambda} = 2 \frac{dv}{v}\]from the range-angle relation,
\[\frac{d}{d\lambda} \sin \frac{\Phi}{2} = \frac{2}{(2 - \lambda)^{2}} \quad \Longrightarrow \quad \frac{d\Phi}{d\lambda} = \frac{4}{(2-\lambda)^{2} \cos (\Phi/2)}\]and combining them gives the logarithmic sensitivity
\[\frac{\partial \ln R}{\partial \ln v} = \frac{2 \lambda}{\Phi} \cdot \frac{4}{(2 - \lambda)^{2} \cos (\Phi/2)}\]At the intercontinental condition of $\lambda = 0.828$ and $\Phi = 1.570$ radians this evaluates to
\[\frac{\partial \ln R}{\partial \ln v} = 4.34\]One part in a thousand of velocity error is therefore about four and a third parts in a thousand of range, or forty-three kilometres at ten thousand. A weapon required to land within eight hundred metres, which is the figure the previous article inverted for the Navaho, needs a velocity accuracy of
\[\frac{\delta v}{v} = \frac{1}{4.34} \times \frac{800}{10^{7}} = 1.84 \times 10^{-5}\]or 0.13 metres per second out of 7193. Cutting the engines at the right instant to a tenth of a metre per second constitutes the ballistic accuracy problem, and the problem lasts for the two minutes of powered flight, not for the thirty-two of the trajectory. Hence the previous article’s vehicle needed a navigator and this one needs a clock, the sharpest single difference between the two weapons.
The Reentry Vehicle as a Separate Body
The preceding sections concern a vehicle whose job ends at burnout. What arrives at the target is a separate body that must survive a reentry the booster never experiences, and the Atlas A carried no operational reentry vehicle at all, only a nose fairing in its place Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960.
The governing result is unusually clean. For a ballistic body entering an exponential atmosphere on a straight path, the peak deceleration is
\[a_{\max} = \frac{v_{e}^{2} \sin \gamma}{2 e H}\]where $\gamma$ is the entry flight path angle and $H$ the scale height, and the striking feature is that the ballistic coefficient does not appear. A heavy dense body and a light one decelerate equally hard, and differ only in the altitude at which they do it. For an entry speed of seven kilometres per second at thirty degrees,
\[a_{\max} = \frac{7000^{2} \times 0.5}{2 \times 2.718 \times 7200} = 626 \, \text{m/s}^{2} = 64 g\]The result is period material and not a later reconstruction. Scherberg and Rubin 1953 computes the decelerations of a ballistic missile on reentry in this form, four years before the X-11 flew, and the closed-form lifting extension is Bell 1965. The motion of the body about its axes while this is happening is Murphy 1961, the char-layer response of the heat shield is Dolton and Reed 1966, and estimating where such a body is while it flies is Schweppe 1964.
The reentry body is decelerated at sixty-four times gravity while the booster that launched it reaches about three and a half by the estimate above and 5.62 on the later Atlas Lewis Research Center 1968. The two halves of a ballistic missile are different structural problems by a factor of between eleven and nineteen, so they are different articles built by different people, and the X-11 could be a complete test of one while carrying none of the other. Nose-cone and ablation work of the period covers Stetson 1964, Wachi and Gilmartin 1966, and Rindal and Dahm 1967, with hemispherical-nose heat transfer in Nardo and Sadler 1962, flight heating measurements in Snodgrass 1955, and the roll-resonance problem in Platus 1967.
Ground Handling Dictated by the Structure
A structure that collapses unpressurised cannot be handled like an aeroplane. It requires a nitrogen supply or a mechanical stretch fixture at every point in its life balloon tank, transport fixtures that support it without imposing a bending moment above the pressure-stabilised limit computed above, and a launch complex that keeps it inflated while it is fuelled. The structural decision propagates into buildings and vehicles and procedures, and the accessible record of that apparatus is unusually good, in General Dynamics San Diego Ca Convair Div 1966 and its companion volumes and in Peters and Hall 1963 on system-test data for the engine system.
The propellant loading problem deserves a note, because a balloon tank couples loading to structure in a way a conventional tank does not. Filling the tank changes the pressure the walls must hold, changes the mass the walls must carry, and changes the temperature of the material, and all three happen while it stands unsupported on a pad. Loading is a structural operation and not merely a fluid transfer. Whitcombe 1961 optimises propellant loading and utilisation, and ground support equipment practice of the period runs from Moore 1958 and Newton and Makrides 1954, with launch complex activation in Powell 1962.
The boil-off that follows is a second coupling, and its rate explains why topping continues until moments before launch. With a wetted area of
\[A = 2 \pi r L = 2 \pi \times 1.524 \times 18 = 172 \, \text{m}^{2}\]an uninsulated tank at a convective coefficient of ten watts per square metre kelvin against a two hundred kelvin difference admits
\[\dot{Q} = h A \Delta T = 10 \times 172 \times 200 = 345 \, \text{kW}\]and at a latent heat of 213 kilojoules per kilogramme the boil-off is
\[\dot{m}_{\text{boil}} = \frac{\dot{Q}}{L_{v}} = \frac{3.45 \times 10^{5}}{2.13 \times 10^{5}} = 1.62 \, \text{kg/s}\]or 5826 kilogrammes an hour, which is seven and a half percent of the oxygen load every hour. Liquid oxygen at 90 kelvin against an ambient near 290 therefore boils continuously, the tank must be topped until moments before launch, and the ullage pressure must be regulated throughout. The insulation that reduces the rate appears in Weiss and Goodman 1960, and the conditioning of the propellant before launch is Greenfield 1960. On this vehicle a pressure regulation failure is a structural failure, the recurring theme of the design. Two-phase pumping of cryogenic propellants is Stinson and Gross 1972.
The Flight Test Record
Eight Atlas A vehicles flew from Cape Canaveral between 11 June 1957 and 3 June 1958, against a plan for seven test missiles of 181,000 pounds between June and December 1957, expected to fly 460 nautical miles downrange Cleary 1991 The 6555th, Missile and Space Launches Through 1970. Convair had started fabrication in February 1955 and delivered the first missile on 29 August 1956, and missile 4A reached the Air Force Missile Test Center in December 1956 Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960. Cleary records five launches from Launch Complex 14 and three from Launch Complex 12, grades the first two flights failures and the third and fourth successes, and does not grade the last four. Neufeld’s summary records that the series ended in June 1958 with three successes, and that the eight missiles flew with only the booster and vernier engines and a nose fairing in place of a reentry vehicle. The apogees and the remaining outcomes in the table below are those of the Convair X-11 compilation, whose table grades three flights successful, matching the official count, while its summary says four.
| Date | Pad | Serial | Apogee | Outcome |
|---|---|---|---|---|
| 1957-06-11 | 14 | 4A | 2 km | failure |
| 1957-09-25 | 14 | 6A | 3 km | failure |
| 1957-12-17 | 14 | 12A | 120 km | success |
| 1958-01-10 | 12 | 10A | 120 km | success |
| 1958-02-07 | 14 | 13A | 120 km | failure |
| 1958-02-20 | 12 | 11A | 90 km | failure |
| 1958-04-05 | 14 | 15A | 100 km | failure |
| 1958-06-03 | 12 | 16A | 120 km | success |
The first flight lost thrust about 24 seconds after lift-off, performed what Cleary calls a couple of loops, and was destroyed by the range safety officer less than a minute after lift-off. Neufeld puts its height at a few thousand feet, the compilation’s table at two kilometres and its narrative at 9,800 feet, about three. The detail that matters for this article is that the vehicle tumbled and the structure held. By Neufeld’s account the Atlas nonetheless demonstrated its structural integrity and the ability to gimbal its engines, and Dawson and Bowles 2004 that the tank did not break up under the lateral stresses of the tumble until the range safety officer destroyed it. A pressure-stabilised shell that survives a tumble at low altitude has demonstrated the property most in doubt. A tumbling body sees its bending moment applied at an arbitrary angle and reversed once per revolution, the worst possible use of a structure whose compressive capacity is two hundred times smaller than its tensile one. That it held is evidence that the pressure stabilisation was working as the relation above predicts, since the relation does not care about the direction of the moment. A tumbling vehicle at rotation rate $\Omega$ also loads itself centrifugally, and the transverse acceleration at the tip of a body of length $L$ rotating about its centre is
\[a_{\text{tip}} = \Omega^{2} \frac{L}{2}\]so a tumble at the one revolution per second assumed here, since no source gives the rate, gives
\[a_{\text{tip}} = (2 \pi)^{2} \times 11.6 = 458 \, \text{m/s}^{2} = 47 g\]at the nose, applied as a bending load along the whole vehicle. The structure that everyone expected to fold survived a load case nobody had designed for.
The flight-by-flight record for the operational variants is in the Flight Test Working Group reports, of which General Dynamics/Astronautics San Diegoca 1961 is one, and the survival-probability analysis such a programme generates is Beer and Lennox 1965.
The Purpose of the Eight Flights
What the programme intended each flight to establish differs from what the flight record shows, and the difference explains the apparent poor showing.
The first two flights, in June and September 1957, reached two and three kilometres by the compilation’s table, and on the second the propulsion system ran normally for about 32 seconds before a liquid oxygen regulator problem reduced thrust and then cut all power Cleary 1991 The 6555th, Missile and Space Launches Through 1970. Neither was a performance flight in any sense. They were attempts to get a vehicle off the pad and through the first seconds of powered flight, and the first of them delivered the single most important structural result of the programme by tumbling and holding together. A flight that reaches two kilometres and is destroyed has still exercised the structure through lift-off, through the acoustic transient, and through an off-design load case, and the vehicle passed all three.
The third and fourth flights, in December 1957 and January 1958, reached 120 kilometres in the compilation’s table and are recorded as successes in the launch history. Those are the flights that establish the vehicle as a vehicle. Neufeld has the third, missile 12A, burning its engines for two full minutes as programmed, flying “some 600 miles” down the Atlantic Missile Range, and being declared a complete success. The unit is not settled by the record. Neufeld’s narrative of that flight writes miles without qualification, while his summary of the whole series gives its maximum range and altitude as 600 and 57.5 nautical miles. Both readings are carried here. As a fraction of the intercontinental range they are
\[\frac{600 \times 1.609}{10{,}000} = 0.097, \qquad \frac{600 \times 1.852}{10{,}000} = 0.111\]so the series flew about a tenth of the range either way, and by the range relation of the previous article a minimum-energy flight of 965.6 or 1,111.2 kilometres needs a burnout speed of
\[\sin \frac{\Phi}{2} = \sin \frac{965.6}{2 \times 6371} = 0.0757, \qquad \lambda = \frac{2 \times 0.0757}{1 + 0.0757} = 0.1408, \qquad v_{bo} = \sqrt{0.1408 \times 9.80665 \times 6.371 \times 10^{6}} = 2966 \, \text{m/s}\] \[\sin \frac{\Phi}{2} = \sin \frac{1111.2}{2 \times 6371} = 0.0871, \qquad \lambda = \frac{2 \times 0.0871}{1 + 0.0871} = 0.1602, \qquad v_{bo} = \sqrt{0.1602 \times 9.80665 \times 6.371 \times 10^{6}} = 3164 \, \text{m/s}\]which are 0.41 and 0.44 of the 7193 metres per second the full range needs. Any other path to the same range needs more speed than the minimum-energy one, so about two fifths is a floor under either reading. The summary altitude of 57.5 nautical miles is 106.5 kilometres, below the 120 kilometres the compilation’s table gives for four of the flights. By the compilation, the fifth, sixth, and seventh failed at 120, 90, and 100 kilometres, a pattern of getting most of the way and then losing something, and the reported causes are consistent with that reading. The eighth, in June 1958, succeeded.
The programme therefore obtained its structural answer on flight one and spent the remaining seven flights on propulsion, plumbing, and pneumatics. That ordering is the opposite of what the article’s organisation implies. An article built around the balloon tank naturally presents the structure as the programme’s central difficulty, and the flight record says the structure was the thing that worked first and never stopped working.
The failures were concentrated in propulsion and plumbing rather than in structure. The launch history names a loss of engine thrust on the first flight and a liquid oxygen regulator problem on the second. The compilation adds exhaust-gas recirculation overheating the boat-tail, propellant duct failures, and pneumatic and guidance faults, with heat shielding, steel plumbing in place of aluminium, and revised venting as the remedies. The programme’s difficulty was never the thing that looked impossible.
What a Three-in-Eight Success Rate Means
Three of eight is a success rate of 0.375, which sounds alarming and is normal for a first flight article. What the number supports is narrow. Treating the flights as independent Bernoulli trials, the standard error on the estimate is
\[\sigma_{\hat{p}} = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.234}{8}} = 0.171\]so the estimate is 0.375 plus or minus about 0.17, and any true reliability between roughly 0.03 and 0.72 is consistent with the observation. Eight flights cannot distinguish a mediocre vehicle from a good one.
It is tempting to read a learning curve into the sequence and the data do not support one. The outcomes in order were failure, failure, success, success, failure, failure, failure, success, so the first four flights produced two successes and the last four produced one. The standard error on a four-flight estimate is
\[\sigma = \sqrt{\frac{p(1-p)}{4}} = 0.25\]which is one flight in four, so a difference of one success between the halves is exactly the size of the noise. The programme neither demonstrably improved nor demonstrably worsened across its eight flights, and any account that describes the record as a learning curve is reading a trend into a sequence too short to carry one.
The width of that interval argues for flying often, and the relation makes it explicit. Halving the interval requires quadrupling the flights,
\[n = \frac{p (1-p)}{\sigma_{\hat{p}}^{2}}\]so an estimate good to five percentage points at a true reliability near one half needs
\[n = \frac{0.25}{0.05^{2}} = 100 \, \text{flights}\]which is more than twelve times the eight development articles of this series. Reliability for such a vehicle is therefore established by inference from ground test and by accumulating operational rounds, not by the flight test programme, and the Difficulties Review volumes of General Dynamics San Diego Ca Convair Div 1966 show that inference written down.
Comparison With Ground Prediction
The Atlas structure lends itself to ground test, because a pressure-stabilised tank can be proof-tested to its failure mode by pressurising it, unlike a stiffened shell whose failure mode is compressive buckling under a load that is hard to apply. The design is unusually testable on the ground for the same reason it is unusual in flight.
The gap between ground and flight is therefore not in the structure but in the combined environment. A tank can be pressure-tested, a shell can be buckling-tested, and neither test applies the acoustic field, the vibration, the thermal gradient, and the axial acceleration at once. Nickell 1961 and Leaumont 1965 carry the period’s shell-buckling experiment, and the standing difficulty that experiments scatter far below theory is the subject of von Karman and Tsien 1941 and remains the reason a knockdown factor exists at all.
The scatter deserves a number, because it is the largest single uncertainty in the article. Test results for nominally identical cylinders scatter widely below the classical value, and the design lower bound of NASA’s criterion is near eighteen percent at a radius-to-thickness ratio of 1,500 NASA 1968 Buckling of Thin-Walled Circular Cylinders. The band assumed here runs from fifteen to sixty percent of the classical value,
\[0.15 \leq \frac{\sigma_{\exp}}{\sigma_{cr}} \leq 0.60 \qquad \frac{0.60}{0.15} = 4\]a spread of four to one, and the design factor of 0.20 used above sits at
\[\frac{0.20 - 0.15}{0.60 - 0.15} = 0.11\]or the eleventh percentile of the assumed band, which is to say very near its lower edge. A structure designed against a four-to-one experimental scatter is being designed against ignorance rather than against a load, and the pressure-stabilised solution sidesteps the difficulty by arranging that no fibre goes into compression at all. In that sense the balloon tank is not merely lighter but epistemically cleaner. Its failure mode is yield, which is predictable to a few percent, rather than buckling, which is not. The standard treatments are Timoshenko and Gere 1961 Theory of Elastic Stability and Brush and Almroth 1975 Buckling of Bars, Plates and Shells, with vehicle structural practice in Bruhn 1973 Analysis and Design of Flight Vehicle Structures.
What the Ground Could Not Reproduce
Three things about the flight environment resist ground reproduction and all three bear on this structure.
The loads arrive together. A proof test applies pressure. A static test applies axial load. A vibration table applies acceleration. The article at maximum dynamic pressure has internal pressure, axial acceleration, a bending moment from incidence, an acoustic field, and a thermal gradient across the skin, all at once, and the interaction between them is what a combined-environment test exists to explore and what the period could rarely afford. Roberts and Wilhem 1964 and Ballentine et al 1966 attempt that combination.
The structure changes during the flight. The tank drains, so the mass distribution, the axial stiffness, the slosh frequency, and the acceleration all move continuously through the burn. A ground test holds the article in one configuration and repeats it. A balloon tank is the extreme case of this, because even its stiffness is a function of a state variable that is being consumed, and no static test reproduces it.
The failure mode of interest is statistical. The buckling scatter of four to one is not measurement error. It is the real variation between nominally identical shells, so a single test article is one draw from a distribution. The argument above about eight flights being too few to estimate reliability applies with equal force to shell tests, and with less excuse, because ground articles are cheaper.
What the Data Changed
Into Atlas, and Then Into Space Launch
The X-11 fed directly into the Atlas B, which is the X-12 and the next article, and thence into the operational Atlas D, E, and F. The line then did what the Soviet R-7 also did SM-65 Atlas. It became a launch vehicle, and Atlas-derived launchers served NASA for four decades. Atlas launched Mercury, Agena and Centaur upper stages, and the Mariner probes to Mercury, Venus and Mars Atlas rocket family, and the balloon-tank principle carried into the Centaur upper stage, which still uses it Centaur rocket stage.
The reason it could is arithmetic rather than sentiment. Circular orbital speed at two hundred kilometres is
\[v_{\text{orb}} = \sqrt{\frac{\mu}{R_{e} + h}} = \sqrt{\frac{3.986 \times 10^{14}}{6.571 \times 10^{6}}} = 7788 \, \text{m/s}\]against the 7193 metres per second an intercontinental trajectory needs, a difference of
\[v_{\text{orb}} - v_{bo} = 595 \, \text{m/s}\]or seven percent of the ideal velocity. An intercontinental ballistic missile is already ninety-two percent of the way to orbit, and the remaining eight percent is a small upper stage. That margin is the deepest reason the Atlas outlived the Navaho by six decades.
Frazier 1967 optimises the trajectory for the Atlas and Agena combination, and the control systems that a large launch vehicle of the following generation required are Borelli and Carroll 1967.
The terms this pair of articles has established explain why the Atlas became a launcher and the Navaho became nothing. A booster is a machine for adding velocity, and velocity is useful for any mission that needs it. A cruise missile is a machine for carrying a warhead a particular distance at a particular speed, and nothing else wants that. The Atlas survived its obsolescence as a weapon because its keystone quantity, mass fraction, is valuable to every customer, while the Navaho’s keystone quantity, sustained autonomous navigation accuracy, was valuable only to the mission that was cancelled.
The Lineage and the Cost of Keeping It
The Atlas that launched Mercury was not the Atlas A. It was a derivative of the D, with a thicker oxidizer-tank skin, a human-rating programme behind it, and an abort-sensing system the weapon never carried Atlas LV-3B. The lineage nonetheless kept the balloon tank for nearly five decades, through Atlas D, E, F, and the Atlas-Agena and Atlas-Centaur combinations, and into the Atlas II and III, the last of which flew in 2005 Atlas rocket family. It was abandoned only with the Atlas V, whose common core booster is an isogrid aluminium structure that stays stable unpressurised Atlas V, while its Centaur upper stage kept the balloon tank.
The tank survived so long because a launch vehicle is judged by payload rather than by convenience, and the balloon tank pays for itself in payload every flight. It was eventually abandoned because payload stopped being the only criterion.
The arithmetic of the transition is available from the relations already used. A structure heavier by the stiffening increment computed above costs, at the Atlas mass fractions, about eleven percent of range or the equivalent in payload. Eleven percent of payload is a large penalty on a weapon and a manageable one on a commercial launcher, because a launcher can be sized upward while a missile has to fit its basing. That single asymmetry explains the trajectory of the design, from indispensable in 1957 to abandoned for the Atlas V in 2002, without any appeal to changing fashion.
Centaur is the exception that confirms it. It kept the balloon tank because an upper stage pays the mass penalty at the worst possible place in the vehicle, where every kilogramme of structure trades one-for-one against payload and is not diluted by the stages beneath it. The higher up a vehicle a structure sits, the more a balloon tank is worth, so the idea survives in the position where its disadvantages matter least and its advantages matter most.
What It Did Not Change
The pressure-stabilised structure did not become the standard way to build launch vehicles. Most launch vehicles since have been conventionally stiffened aluminium or composite structures, accepting a worse mass fraction in exchange for a vehicle that can be set down empty, handled without a nitrogen cart, and inspected without a pressure regime. The Atlas won its argument and then lost it, because mass fraction stopped being the binding constraint once vehicles grew and staging improved, while handling cost never stopped mattering.
The Contemporary Literature
| Cluster | Records |
|---|---|
| Thin shells, buckling and the knockdown factor | 1,076 |
| Propellant tanks, cryogenic storage and boil-off | 734 |
| Rocket propulsion, engines and their failures | 654 |
| Trajectory, guidance and control | 361 |
| Launch vehicle design, programmes and operations, the residual | 352 |
| Staging, mass fraction, cost and the launcher line | 294 |
| Propellant slosh | 279 |
| Ground winds, buffet and ascent aerodynamic loads | 273 |
| The ballistic missile programmes and their history | 258 |
| Structural dynamics, modal test and monitoring of launch structures | 245 |
| Reentry vehicles and the uncontrolled return | 241 |
| The Atlas, its derivatives and its programme record | 217 |
| Pressure-stabilised and inflatable structure | 184 |
| Launch acoustics, vibration and sonic fatigue | 167 |
| Materials, manufacture, welding, fracture and the proof test | 160 |
| Flight test, reliability and launch operations | 119 |
| Pogo and propulsion-structure coupling | 71 |
| Total | 5,685 |
Shell Buckling Beyond the Knockdown Factor
The design allowable used above is a blanket factor applied to a classical result, an admission that the theory does not predict the experiment. That has been the state of the art since von Karman and Tsien 1941 and it is now being replaced by methods that model the imperfection instead of hiding behind a factor.
Evkin 2026 computes imperfection sensitivity rather than assuming it, Ventura et al 2023 takes the asymptotic numerical route to pressurised-cylinder buckling, and stochastic and dynamic treatments are Yu et al 2024 and Ozoigbo et al 2025. Jiao et al 2023 takes thin-walled behaviour under combined loading, and gauge-sensitivity methods are Zhang 2022. The most directly relevant modern paper derives knockdown factors for common-bulkhead structures, the configuration studied here, in Lee et al 2024.
The newer work goes further and tries to predict the lower bound outright. Lin et al 2025 drives a lower-bound buckling prediction with machine learning, and post-buckling dynamics are Yang et al 2026 and Peshkhoev 2026. Grid-stiffened composite cylinders, the design the Atlas rejected, are Velmurugan and Buragohain 2023, with sandwich tubes under bending in Ni et al 2026.
The direction of travel is clear. A knockdown factor is a confession that the analyst cannot model the article in front of him. Every one of these papers is an attempt to withdraw the confession, and the Atlas is the vehicle that avoided needing it by arranging that no fibre goes into compression at all.
Numerical Shell Analysis
The relations this article uses are closed-form membrane and buckling results because those are what the period had and what a reader can check. Modern shell analysis is numerical, and the problem the article poses has been solved properly. Static bending of a pressurised cylindrical shell, the configuration of the keystone derivation, is Samadzadeh et al 2024. Yu 2026 takes the externally pressurised case, Jin 2025 puts internal pressure on a non-circular shell, a geometrically nonlinear shell element is Azizi and Dornisch 2025, and a launch-vehicle-like article is analysed and tested in Tillotson Rudd et al 2024.
The probabilistic turn is the important one. Sadovský et al 2024 identifies buckling resistance as a distribution rather than a value, the quantity a knockdown factor was always crudely approximating. A design factor of 0.2 is a one-number summary of a probability distribution nobody could compute in 1951 and everybody can compute now.
Inflatable and Pressure-Stabilised Structure Under Another Name
The relation derived above, that a pressurised cylinder resists bending until the compressive stress from the moment overcomes the tensile stress from pressure, is the governing relation of a field that is now called inflatable structures rather than pressure-stabilised ones.
Inflatable tube bending is modelled and validated experimentally in Gong et al 2026, Ge et al 2026, and Zhang et al 2025, which measure the quantity computed above. Wrinkling, which is what the failure looks like when the pressure loses, is Wang et al 2026 under bending and torsion and Gashe et al 2025 under shear and compression. Tapered inflatable lattices are Kundu and Mukhopadhyay 2025, precision analysis of an inflatable antenna is Hu et al 2025, and habitat use is Kömle et al 2025.
Bossart’s idea did not die. It moved to spacecraft that must be small when launched and large when deployed, where the mass argument is even stronger than it was for the Atlas, and the analysis those programmes use is the analysis this article performs.
Propellant Tanks and the Unchanged Rocket Equation
Tank structure remains where launch-vehicle mass is won and lost, and the modern literature is dominated by cryogenics because the propellants moved. Kim et al 2025 optimises a launch vehicle tank structurally, the common-bulkhead arrangement the Atlas pioneered appears in Zhang et al 2025 and Zhang et al 2025. Narayana Yenugula et al 2025 adds vacuum insulation to a thermo-structural analysis, all-composite cryogenic tanks are Rhee et al 2025, Cheng et al 2025 couples the analysis concurrently, Bershadskyi et al 2022 verifies a tank operational-pressure model, and two-way fluid-structure and thermal-structure interaction appears in Ajeesh et al 2026.
The boil-off computed above at seven and a half percent of the oxygen load per hour is now attacked directly. Zhang et al 2025 optimises for zero boil-off, boil-off gas reduction appears in Nikonchuk 2026 and Lu et al 2026, double-shell vacuum insulation behaviour is Lee et al 2026, Zhang et al 2026 and Yu et al 2026 take insulation heat and mass transfer, Leng et al 2026 compares thermodynamic performance, and Chung 2026 covers thermal-fluid management in full.
The Atlas topped its tanks until moments before launch because it had no alternative. A modern cryogenic stage intended to loiter in orbit cannot do that, so zero-boil-off is a research programme.
Sloshing and the Baffle
A tank with no internal structure has nothing to break the free surface, and the modern literature is still largely about where to put the baffles. Liu et al 2025 varies vertical baffle height, annular perforated baffles are Lu and Cao 2026, and three-dimensional resonant sloshing in a cylindrical tank appears in Lu and Cao 2025 with the wave-response comparison in Lu and Cao 2025, Aguiar et al 2025 mitigates it passively, slosh effects and baffle requirements are Solomon and Tamiru 2026 and Pei 2021. Jeon et al 2024 varies baffle influence, and the coupling into vehicle dynamics appears in Xu and Xu 2024 and Roithmayr and Pei 2024 on touchdown stability.
One modern paper is a direct descendant. Lee and Baek 2026 analyses the vibration of a redesigned stainless-steel propellant tank on a current launch vehicle, which is the same material, the same structural philosophy, and the same coupling problem the Atlas met seventy years earlier.
Pogo as an Active Design Problem
Zhao and Tan 2026 reduces the model for suppression design, Zhao et al 2024 and Tan et al 2023 suppress it actively, Dolgopolov and Nikolayev 2024 models it nonlinearly, and suppressor hardware appears in Yoon et al 2021 and Mitra et al 2021, the strap-on configuration is Liu et al 2020, and stability analysis is Raji et al 2019. That an instability first met on 1960s vehicles still supports an active design literature is a measure of how tightly propulsion and structure couple in a thin-walled liquid rocket, and a pressure-stabilised vehicle is the extreme case because its axial stiffness is partly pressure.
Ground Wind and Buffet, the Load Case Easiest to Forget
The section Ascent Loads, and the Worst Two Minutes established that a slender vehicle on a pad can be driven into resonance by vortex shedding, and that for this vehicle the resisting pressure is the standing five pounds and not the flight sixty. That subject has since moved from a launch-vehicle speciality into general structural dynamics. Sahu et al 2024 takes vortex-induced vibration of a circular cylinder in the supercritical regime, the regime a vehicle of this diameter stands in, Zhang et al 2024 and Vîlceanu et al 2024 couple fluid to structure, damper effectiveness appears in Wang et al 2024, and ground-mounted validation is Eshete et al 2024.
The ascent equivalent is transonic buffet, which is Piatak et al 2015 on the buffet environment test programme of a current launcher, Ragab 1992 on buffet load prediction against flight data, Cole and Henning 1992 on the response of a hammerhead configuration, and Singh et al 2026 on active control over a payload fairing. Load relief, the modern answer to designing for the worst wind, appears in Orr and Russell 2024, Zhang et al 2024, and Song et al 2026.
Acoustics and Sonic Fatigue
The 153 decibels computed above is a fatigue problem rather than a strength problem, and the modern treatment is statistical. Qiu et al 2026 gives a damage-equivalent stress amplitude under random loading, Zhang et al 2026 predicts fatigue life and failure location, Pan et al 2026 grows cracks under variable amplitude, Reddy et al 2026 tests a functional article vibro-acoustically, thermo-vibro-acoustic analysis with structural mitigation appears in Abhishek Hari 2026, and suppression on a corrugated structure is Zhou et al 2025.
Flaws, Fracture and the Meaning of a Proof Test
The proof test the article describes loads the tank to a fraction of its failure stress and concludes that it will hold. What it establishes is that no flaw large enough to propagate at that stress is present, a claim about fracture mechanics, not about strength. Modern treatment of that distinction is Agarwal et al 2025 on crack analysis by extended finite elements, Mullin et al 2025 on critical flaw sizes and crack driving force, and Zhao et al 2026 on a physics-informed neural network for the same problem. Comparative small-scale test methods are Ding et al 2025, burst testing of vessels is Lüders et al 2025 and Paleti et al 2026, and weld inspection standards applied to vessels are Dian Fitria Ramdani and Dene Herwanto 2026. Sensor-based anomaly detection integrated with structural monitoring is Zhou et al 2024.
On a vehicle whose wall is under a millimetre thick, a flaw that matters is smaller than an inspector can reliably see, so the proof test, not the inspection, is the acceptance gate, and the gate works.
Modal Survey and Test Correlation
The bending and axial modes of a launcher decide its control stability and its pogo margin, and those modes are measured rather than trusted. Panda et al 2025 identifies acoustic sources on a launch vehicle, the modern form of the environment estimated above at 153 decibels. Low-frequency elastic mode identification is the subject of Song et al 2026, and the wider identification literature that supplies the methods is Erdogan and Tekin 2025, Yang and Chen 2025, and Huang et al 2025. A balloon-tank stage has to be modal-surveyed at pressure, because its stiffness is not a property of the hardware alone, and that is a test complication the article has not otherwise mentioned.
Launch Aerodynamics, Computed Rather Than Tunnelled
The ascent loads the article estimates from a scale height and a normal-force slope are now computed. Stage separation, which the Atlas performs uniquely by dropping engines rather than tanks, is simulated against wind-tunnel test in Kumar et al 2023. Reusable vehicle aerodynamics is Prasad 2022, aerodynamic damping extraction is Wang and Chen 2022, turbulence-model sensitivity is Yang et al 2022 and Zhao et al 2022, and interference reduction is Liao et al 2023. Inflatable decelerator aerodynamics, which is the pressure-stabilised structure meeting the reentry problem, is Rioseco Olave et al 2023, Yun and Liu 2023, and Jalaja et al 2024.
Ascent Loads, Guidance, and the Trajectory
Sun et al 2024 optimises the ascent convexly, approximate analytical solutions are Yu et al 2023 and Yu et al 2024. He et al 2024 relieves load by rolling, Zhou et al 2025 learns the attitude control that does it, Jayan et al 2024 estimates the resulting loads, computational fluid dynamics for ascent is Dalle et al 2024 with Reynolds and aeroelastic scaling in Ivanco et al 2024, chance-constrained optimisation is Guo et al 2026, adaptive sequential convex programming is Li et al 2024, and the thermal environment of the ascending vehicle is Sun et al 2026. Interstage structural design, a part the Atlas famously did not have, is De Luca et al 2026.
The engine-cutoff accuracy the article computes at 0.13 metres per second is now a solved control problem, and the papers above solve harder versions of it while carrying loads the Atlas would not have survived.
Engines and Health Monitoring
Five of eight Atlas A flights failed by the flight-by-flight record and the failures were in propulsion, plumbing and control electronics Convair X-11. That is now the most instrumented part of a launch vehicle. Cha et al 2024 diagnoses the startup transient, Cha and Ko 2025 generalises the fault factor, Kamenskii and Martirosov 2021 monitors current state, the priming pressure surge is studied in Das and Padmanabhan 2022, turbopump flow is Zhou et al 2022, thrust control is Yao et al 2022, and thrust vector control is Benfriha et al 2026 and Saiki et al 2026. The Atlas A programme diagnosed its failures from telemetry after the flight. A modern vehicle carries the diagnosis aboard.
Reliability From Few Flights
The binomial interval computed above is wide because eight is a small number. Wagenblast and Bettinger 2024 estimates launch vehicle reliability statistically, Li et al 2025 manages it on an operational vehicle, Muthukumar et al 2020 estimates it for a control system, safety and operational reliability methodology comes from Khamlak 2026, and modern estimation methods are Zhu 2026 and Almetwally et al 2026. Certification by machine-learning model validation is Neumaier et al 2025. The methods now used to certify a vehicle on a handful of flights are the methods the Atlas A programme needed and did not have.
Structural Health Monitoring and the Digital Twin
A stage that must be kept pressurised at all times has a structural state worth watching continuously, and that is now possible. Chehrzad and Khoramishad 2026 monitors bonded joints through their electrical impedance, and Calderon Hurtado et al 2026 validates a monitoring system in the field on full-scale bridges. Had the Atlas been built now it would have known its pressure margin in real time, the single capability that would most have changed how it was handled.
Manufacture of a Thin Welded Shell
The Atlas skin is a welded stainless assembly at a gauge where welding distortion is comparable to the thickness. Płaczek et al 2023 and Qiu et al 2023 fatigue welded joints in thin-walled structure, Zhang and He 2024 treats the welds by high-frequency mechanical impact, Edwards et al 2023 models microstructure in duplex stainless, Department of Smart Manufacturing Engineering et al 2024 takes springback and cold-roll forming, additive manufacture of stainless for rocket application is the subject of Thomas 2022, and critical flaw sizing is Mullin et al 2025.
Weld inspection has become a machine-vision problem, in Luo et al 2026, Thompson et al 2025, Luo et al 2025, Zhao et al 2025, and Mukherjee et al 2025. On a vehicle where the longitudinal weld decides the structure, that capability is not incidental.
The period met the same difficulties with the same material. Examination of welds in stainless sheet is Nolan 1964, welding of thin-sheet stainless is Apatovskii et al 1967, the electron-beam process that made thin aerospace welds practical is Kern and Lubin 1963, press forming is Tozawa 1969, and strain and failure of thin stainless sheet under load is Khil’chevskii and Kadyshev 1973. Sixty years of instrumentation has not changed what can go wrong with a thin weld. It has changed how early it is found.
Characterising the Material
The article assumes a yield of 965 megapascals and an ultimate of 1276 for 301 stainless in its extra-full-hard condition, and those are assumed values rather than properties measured on the Atlas skin. Modern characterisation of the same class of material at the temperatures a cryogenic tank sees is Xu et al 2025, with the effect of cryogenic treatment on microstructure in Liu and Yuan 2025 and Wang et al 2026, and load-bearing behaviour in Wang et al 2026. Bimetallic additive construction is Narayanaswamy et al 2025.
The proof test the article describes has become a dataset. Hydraulic burst-pressure testing of pressure vessels is now published as data in Lüders et al 2025. A designer choosing a knockdown factor today has an evidence base the Atlas team did not, and that difference is the content of the shell-buckling section above.
The Tank After the Mission
A pressure-stabilised stage that reaches orbit is a large thin-walled pressure vessel in space with residual propellant in it, and that is now recognised as a hazard and no longer as a curiosity. Trushlyakov et al 2024 passivates propellant residues in orbit, Liu et al 2026 assesses survivability against the resulting debris, mitigation strategy across orbital regimes belongs to Navaz and Ntantis 2026, and conceptual design against those criteria is Layachi et al 2025. The Atlas itself reached orbit, first as missile 10B on the flight of December 1958 that orbited the Signal Communication by Orbiting Relay Equipment satellite, as the X-12 compilation records, and a spent stage of that kind is what the current literature treats as a fragmentation risk.
Modern Reentry Research
Morgado et al 2022 and Sharma et al 2024 take reentry aerothermodynamics, Appar and Kumar 2021 ablates at the fluid-solid interface, Ren 2025 examines the flow mechanics of it, Gerasimov 2025 takes ablative carbon protection and Tian et al 2025 an aerogel ceramic, aerothermodynamic sensitivity and optimisation are Horing et al 2025, reachability of a manoeuvring body is Webb et al 2026 and Su et al 2026, learned guidance is Marchetti and Minisci 2021, and covariance propagation for a high-order system is Chen et al 2025. The uncontrolled case applies the same physics to debris, in Öztürk et al 2026, Fernando and Charalambous 2026, and Bigham and Puri 2025.
Economics, Reuse, and the Argument the Atlas Won and Then Lost
The Atlas traded handling cost for mass fraction, and the modern literature is explicit that the trade has reversed. Du et al 2025 estimates lifecycle cost for a reusable vehicle, and Lee et al 2026 compares recovery methods across vehicle scales. The paper that closes the circle with this article is Jo and Ahn 2022, which optimises the staging of a reusable launch vehicle for minimum lifecycle cost rather than for minimum mass, and thereby inverts the objective function the Atlas was designed against. Launch cost deflation as an economic phenomenon in its own right is Christie 2026, which is the endpoint of an argument the Atlas started by making mass fraction the only thing that mattered.
The strategic side has not gone away either. The rationale for a new intercontinental missile is argued in Modernizing the U.S. Nuclear 2022, and the missile’s place in post-Cold War deterrence in O’Rourke 2010. The weapon class the X-11 was built to found is still in service, unlike the intercontinental cruise missile the X-10 served.
That continuity prompts one closing observation about what a survey of this kind can and cannot see. The survey above is drawn from open literature, and open literature is systematically thicker where a technology found civilian use. The Atlas has sixty years of launch-vehicle publication behind it and the Navaho has four years of cancelled-programme reporting, so a comparison of the two archives measures what happened to each programme afterwards at least as much as it measures what each programme did. The Source Base section below states that as a finding and does not leave it as a bias, because it is both.
Thin shells, buckling and the knockdown factor
The largest cluster, and the one the knockdown factor lives in. Classical and imperfect cylinder buckling, stiffened, sandwich and composite shells, combined loads, internal pressure and the design factors that summarise the gap between theory and test. 145 of its 1,076 records name imperfection and 30 name the knockdown factor, while 28 name a launch vehicle, propellant tank, rocket, missile or booster, so the shell-buckling literature is overwhelmingly a general structural mechanics that a launch-vehicle designer borrows.
1,076 records. [A Coupled Nonlinear Buckling 2023] [Abbasi 2020] [Abdi et al 2011] [Abir and Nardo 1959] [Abu-Farsakh and Lusher 1985] [Adam and King 1965] [Adams] [Adams 1971] [Adams 1971] [Advances in Buckling Analysis 2021] [Aghajari et al 2006] [Agrawal et al 2023] [Ahmadi 2019] [Ahmadi et al 2019] [Albazzan et al 2019] [Allnutt 1953] [Almroth 1962] [Almroth 1966] [Almroth 1969] [Almroth et al 1965] [Almroth et al 1965] [Alzahabi and Kowalski 2009] [Amazigo 1969] [Amiro 1962] [An et al 2014] [Anafi and Baluch 2025] [Anderson 1955] [Andreev and Kapliy 2014] [Ansari et al 2021] [Arbocz 1992] [Arbocz and Babcock 1969] [Arbocz and Hilburger 2003] [Arun et al 2022] [Asadi and Wang 2017] [Ashmarin 1966] [Ashmarin 1972] [Athiannan and Palaninathan 2004] [Augello and Pellegrino 2025] [Azizi and Stranghöner 2021] [Azizi and Stranghöner 2022] [Azzuni and Guzey 2016] [Babcock 1966] [Babcock 1967] [Babcock and Sechler 1962] [Babcock and Sechler 1963] [Babcock and Sechler 1964] [Baciu et al 2024] [Bai and Wang 2011] [Baker et al 1983] [Bakhtiari and Kheradpisheh 2020] [Balbin et al 2020] [Ball and Citerley 1980] [Bapu Rao and Murthy 1977] [Barron and Villaimueva 1981] [Barski and Krużelecki 2005] [Barton et al 1961] [Basaglia et al 2019] [Basic Equations of Shell 2001] [Bauld 1974] [Baumgarten and Kierfeld 2019] [Ben-Haim and Elishakoff 1989] [Bendavid and Mayers 1970] [Berdnikov 1972] [Bergman 1962] [Berman et al 1974] [Bert and Birman 1986] [Biagi and Del Medico 2008] [Bijlaard 1962] [Bisagni 2000] [Bisagni 2005] [Blaauwendraad and Hoefakker 2013] [Blaauwendraad and Hoefakker 2013] [Bleich and Baron 1952] [Block 1972] [Bodner and Naveh 1988] [Boichot and reynolds 1965] [Booton and Tennyson 1978] [Boundary Layer Theory of 2017] [Bozich 1967] [Brogan and Almroth 1970] [Brown et al 1961] [Brush 1968] [Buchert 1966] [Buckling and Postbuckling of 1984] [Buckling and Postbuckling of 1984] [Buckling of Circular Cylindrical 1984] [Buckling of circular cylindrical 1991] [Buckling of circular ring 2009] [Buckling of Cylindrical Shells 2003] [Buckling of edge-damaged filament-wound 1990] [Buckling of Plates and 1985] [Buckling of Shell Structures 1991] [Buckling of shells classical 1983] [Buckling of shells non-classical 1983] [Buckling of Shells of 2003] [Budiansky 1969] [Budiansky and Hutchinson 1972] [Burgueño et al 2014] [Burov 2019] [Burris 1971] [Bushnell 1972] [Bushnell 2007] [Böhm and Schaumann 2022] [Böhm and Schaumann 2022] [Błachut 2013] [Błachut 2014] [Błachut 2016] [Błachut 2017] [Błażejewski and Marcinowski 2013] [Cabrera-González and Sadowski 2025] [Cai et al 2005] [Calculation of the stress-strain 2024] [Calladine] [Calladine 1995] [Calladine 2018] [Card and Chang 1971] [Card and Jones 1966] [Card and Jones 1966] [Case and Chilver 1959] [Case and Chilver 1971] [Castel and Trameçon 2025] [Caswell and Muggeridge 1971] [Cha and Schultz 2013] [Chamis and Abumeri 2005] [Chandiramani and Nawandar 2014] [Chang et al 2026] [Chau] [Chaudhuri 2016] [Chauhan and Ahmad 2018] [Chawla 1980] [Chehil et al 1987] [Chekhov 1970] [Chekhov 1970] [Chekhov 1971] [Chekhov 1972] [Chen and Li 1993] [Chen and Long 2011] [Chen et al 2018] [Chen et al 2020] [Cheney 1964] [Cheng and Widera 2009] [Cheng et al 2023] [Cheng et al 2024] [Cheung and Tennyson 1988] [Cheung and Zhu 1989] [Chien Do 2019] [Chikhi and Djermane 2018] [Chou 1971] [Chryssanthopoulos and Poggi 1995] [Chung et al 1976] [Citerley and Khot 1986] [Clarke and Frith 2015] [Cohen 1992] [Cohen and Haftka 1989] [Cohen and Pastrone 1993] [Combescure and Galletly 1999] [Cooper 1967] [Cooper 1972] [Cooper and Dexter 1974] [Coppa] [Coppa 1962] [Coppa and Nash 1962] [Coppa and Nash 1964] [Corona and Kyriakides 1991] [Costello 1970] [Costello and Nishida 1967] [Cragg 2016] [Craig and Duggan 1973] [Craig and Stander 2006] [Curreri et al 2013] [Cylindrical shell roofs 1983] [Cylindrical shells above local] [Cylindrical shells above local 2006] [Cylindrical shells under axial] [Cylindrical shells under axial 2006] [Cylindrical shells under combined] [Cylindrical shells under combined 2006] [Cylindrical Shells under General 2009] [Cylindrical shells under global] [Cylindrical shells under global 2006] [Cylindrical shells under non-uniform] [Cylindrical shells under non-uniform 2006] [Cylindrical shells under torsional] [Cylindrical shells under torsional 2006] [Cylindrical shells under uniform] [Cylindrical shells under uniform 2006] [Daidzic et al 1991] [de Vries] [de Vries 2007] [De-yu et al 1993] [del Prado et al 2009] [Deml and Wunderlich 1997] [Dey and Ramachandra 2019] [Di et al 2022] [Diaconu et al 2002] [Dian-Fu Wang et al 1982] [DIGiovanii and Dugundji 1965] [Dill 1962] [Dong et al 2017] [Donnell 1963] [Doshi and Ning 2023] [Doshi and Ning 2023] [Dowling et al 1992] [Duan et al 2018] [Dung and Hoa 2013] [Durban and Libai 1974] [Durban and Ore 1999] [Durelli et al 1971] [Durelli et al 1973] [Dym and Hoff 1966] [Dynamic Buckling of a 2019] [Edlund 2007] [Edmondson 1974] [Ekstrom 1963] [Ellinas and Supple 1983] [M. R. Eslami 1999] [Eslami 2017] [Esslinger and Ciprian 1982] [Esslinger and Geier 1976] [Estekanchi and Vafai 1999] [Ette and Onwuchekwa 2008] [Evan-Iwanowski and Gorman 1965] [Evkin 2023] [Evkin 2023] [Evkin 2026] [Fajuyitan and Sadowski 2018] [Fan 1989] [Fan 2019] [Fan et al 2016] [Fan et al 2022] [Farshad 1992] [Farshad 1992] [Fatemi et al 2013] [Fathi and Royer 2026] [Fatt 1999] [Fazlalipour et al 2021] [Feinstein et al 1971] [Feinstein et al 1971] [Feldman and Aboudi 1993] [Feldman and Aboudi 1993] [Feldman et al 1965] [Fersht 1974] [Filippov 2015] [Filippov 2017] [Filippov 2026] [Filippov and Naumova 2013] [Firer and Sheinman 1994] [Fischer and Rammerstorfer 1982] [Fisher 1972] [Flores and Godoy 1991] [Foroutan and Torabi 2025] [Foster 1981] [Foster 1987] [Franzoni et al 2019] [Franzoni et al 2019] [Free vibrations of a 2023] [French et al 1967] [Friedrich and Reimerdes 2013] [Fuchs et al 1998] [Fulton 1965] [Fulton and Sykes 1966] [Gaidaichuk and Kotenko 2020] [Gallagher 1976] [Galletly 1990] [Galletly 1998] [Galletly and Galletly 1996] [Ganesan and Kadoli 2003] [Gao et al 2018] [Gavrylenko and Croll 2018] [Geers and Yen 1979] [Geier et al 2002] [Gellin 1979] [Geometrically Nonlinear Cylindrical Shell 1992] [Gerard 1952] [Gerasimidis et al 2018] [Gerdes et al 1998] [Geryk 1972] [Ghanbari Ghazijahani et al 2014] [Gibson 1965] [Gibson 1980] [Godoy and Flores 2002] [Gohery et al 2012] [Goldberg 1961] [Goldfeld 2004] [Goldfeld 2007] [Golzan and Showkati 2008] [Gorman 1965] [Gotsis and Guptil 1993] [Greenberg and Stavsky 1995] [Greenspon 1963] [Greenspon 1963] [Greenspon 1964] [Greenspon 1965] [Greiner and Guggenberger 1998] [Greszczuk and Miller 1970] [Groh and Pirrera 2019] [Groh and Pirrera 2019] [Groh and Wu] [Groh and Wu 2022] [Gu and Fan 2025] [Guggenberger 1995] [Guggenberger 2005] [Haghpanah Jahromi and Vaziri 2012] [Hagihara and Miyazaki 2003] [Hajlaoui et al 2016] [Hamada and Iida 1967] [Hansen 1978] [Hara 2017] [Hart-Smith 1970] [Hartman 1962] [Hartwich et al 2024] [Harutyunyan and Rodrigues 2023] [Hausrath and Dittoe 1962] [Hayashi and Ishinabe 2017] [Hayati and Atai 2019] [Haydl 1968] [Haydl 1968] [Haydl 1968] [Haynie et al 2012] [He et al 2026] [Heard et al 1975] [Herencia 2025] [Herrmann 1962] [Herrmann and Bungay 1964] [Hilburger 2008] [Hilburger 2012] [Hilburger 2014] [Hilburger 2015] [Hilburger 2018] [Hilburger 2020] [Hilburger and Nemeth 2005] [Hilburger and Sarnes 2004] [Hilburger and Schultz] [Hilburger and Starnes 2000] [Hilburger and Starnes 2002] [Hilburger and Starnes 2002] [Hilburger and Starnes 2004] [Hilburger et al 2003] [Hilburger et al 2004] [Hilburger et al 2006] [Hilburger et al 2012] [Hilburger et al 2012] [Hilburger et al 2015] [Hilburger et al 2017] [Hilburger et al 2017] [Hilburger et al 2018] [Hirano 1979] [Hirano 2008] [Hoff 1942] [Hoff 1952] [Hoff 1957] [Hoff 1966] [Hoff 1966] [Hoff 1968] [Hoff and Nachbar 1961] [Hoff and Nachbar 1962] [Hoff and Soong 1965] [Hoff et al 1962] [Hoff et al 1966] [Holston 1968] [Holston and Thurston 1966] [Homma 1965] [Hongwei et al 1999] [Horvay and Veluswami 1979] [Hotała and Skotny 2013] [Hotała et al 2017] [Hou et al 2024] [Houliara and Karamanos 2006] [Houliara and Karamanos 2009] [Houliara and Karamanos 2010] [Hrinda 2012] [Hu 1991] [Hu et al 2017] [Huang 1963] [Huang 1974] [Huang and Funk 1973] [Huang and Han 2008] [Huang and Han 2015] [Huang and Lu 2001] [Huang et al 2011] [Huang et al 2017] [Hui and Du 1987] [Hui-shen et al 1991] [Humphreys and Sve 1966] [Hutchinson 1964] [Hutchinson 1965] [Hutchinson 1965] [Hutchinson 1967] [Hutchinson 1967] [Hutchinson 1968] [Hutchinson 1970] [Hutchinson and Amazigo 1967] [Hutchinson et al 1971] [Huy Bich et al 2013] [Huyan and Simitses 1996] [Huyan and Simitses 1997] [Hühne et al 2008] [Ichino and Takahashi 1965] [Ifayefunmi and Błachut 2018] [Il’in and Lobkova 1986] [Imperfection sensitivity of multilayered 2009] [Imperfection Sensitivity of Non-Triangulated 2022] [Influence of the contact 2023] [Investigation of the effective 2020] [Ishinabe and Hayashi 2013] [Ismail et al 2013] [Ismail et al 2019] [Ismail et al 2023] [Ismail et al 2025] [Jabareen 2009] [Jabareen and Sheinman 2005] [Jafari et al 2005] [Jana et al 2026] [Jasion and Magnucki 2007] [Jasion and Magnucki 2015] [Jawad 1994] [Jawad 1994] [Jenkins 1970] [Jenkins 1988] [Jenkins and Sefic 1966] [Jenkins and Yao 1970] [Jia et al 2022] [Jiantao Liu et al 2009] [Jiao et al 2018] [Jiao et al 2020] [Jiao et al 2021] [Jiao et al 2021] [Jiao et al 2023] [Jiménez et al 2017] [Johns 1962] [Johns 1973] [Johns and Tamm 1977] [Johnson and Card 1995] [Jones 1962] [Jones 1962] [Jones 1963] [Jones 1967] [Jones 1967] [Jones 1967] [Jones 1970] [Jones 1976] [Jones 2012] [Jones and Carter 2012] [Jones and Carter 2012] [Jones and Hennemann 1978] [Jones and Morgan 1974] [Jordan 1966] [Jullien and Limam 1998] [Jäger-Cañás and Pasternak 2017] [Kalleli et al 2024] [Kang et al 2026] [Kao 1980] [Kapania^ 1990] [Karagiozova and Jones 2000] [Karagiozova and Jones 2001] [Karataş and Yükseler 2021] [Kardomateas 1994] [Kardomateas and Philobos 1995] [Karmakar 1979] [Kartuzova et al] [Kartuzova et al 2024] [Kasagi and Sridharan 1994] [Kaufman 1958] [Kawamura and Kamizaki 2019] [Keller 1973] [Kempner 1953] [Kempner 1962] [Kempner and Chen 1969] [Kempner and Chen 1974] [Kerimov 1973] [Kern and Dinkler 2019] [Khalili and Showkati 2012] [Khazaeinejad et al 2009] [Khazaeinejad et al 2010] [Khelil 2002] [Khosravi 2022] [Khot 1968] [Khot 1969] [Khot 1970] [Khot and Venkayya 1970] [Khot et al 1971] [Killpack and Abed-Meraim 2011] [Kim] [Kim et al 2020] [Kim et al 2021] [Kim et al 2024] [Kim et al 2026] [Knight and Starnes 1984] [Knight and Starnes 1998] [Knight et al 1986] [Ko 1994] [Kobayashi 1966] [Kobayashi and Ogasawara 2005] [Kobayashi et al 2012] [Koga and Morimatsu 1989] [Kolakowski and Teter 2022] [Konosu and Fukuda 2007] [Korbut 1966] [Kornecki 1974] [Koroleva 1968] [Kosareo et al 2013] [Kosztowny] [Kosztowny et al 2024] [Kotanchik et al 1964] [Koukouselis and Mistakidis 2018] [Koval and O’neill 1963] [Koval and Wood 1963] [Koval and Wood 1963] [Kozarov et al 1977] [Krasovsky and Evkin 2021] [Krasovsky and Kostyrko 2007] [Krenzke 1963] [Krenzke and Charles 1963] [Kriegesmann et al 2012] [Krishnamoorthy and Narang 1977] [Kroner 1970] [Krużelecki and Trybuła 2012] [Kuenzi 1962] [Kuenzi et al 1965] [Kumar and Chatterjee 2019] [Kuo and Hsu 1988] [Kuscu and Singh 2025] [Labiodh and Chalane 2023] [Lachmann and Rubinstein 2025] [Laird and Frith 2013] [Lakshminarayana and Viswanath 1977] [Lamberti et al 2000] [Langhaar and Boresi 1962] [Lavrenčič and Brank 2019] [Le Grognec and Le Van 2000] [Leaumont 1965] [Lee 1962] [Lee 1962] [Lee 1969] [Lee 1973] [Lee and Lee 1997] [Lee and Sohn 2024] [Lee et al 2019] [Lee et al 2022] [Lee et al 2024] [LeFort et al 1987] [Lemke 1963] [Leonard 1963] [Levi and Hoff 1972] [Levy and Jewell 1965] [Li 2025] [Li and Kettle 2002] [Li and Qiao 2015] [Li and Wang 2014] [Li et al 1994] [Li et al 2009] [Li et al 2011] [Li et al 2017] [Li et al 2021] [Li et al 2021] [Li et al 2022] [Liang and Li 2022] [Liang and Sun 2017] [Liang and Wang 2023] [Liang et al 2026] [Libai and Durban 1973] [Libai and Durban 1977] [Limam et al] [Limtragool] [Lin and Yeh 1994] [Lin et al 2025] [Lindberg and Florence 1987] [Linear Cylindrical Shell Solutions 1992] [Liu and Li 1991] [Liu et al 2016] [Liu et al 2025] [Liu et al 2026] [Lo Frano and Forasassi 2009] [Lockhart 1979] [Lockhart and Amazigo 1975] [Lomakin et al 2018] [Longcope and Forrestal 1971] [Lou and Yaniv 1991] [Love 1963] [Lovejoy and Hilburger 2010] [Lovejoy et al 2018] [Lovíšek 1989] [Lu 1963] [Lu 1965] [Lu and Mao 2026] [Lu and Nash 1962] [Lu et al 2025] [Lunchick 1963] [Lund 2009] [Ma 1989] [Ma et al 2000] [Ma et al 2008] [Ma et al 2020] [Ma et al 2022] [Ma et al 2023] [Ma et al 2023] [Mabson 1996] [Mahayni 1966] [Mahboubi Nasrekani and Eipakchi 2018] [Mahdy et al 2024] [Maleki and Ahmadi 2018] [Malik 1966] [Mandal and Calladine 2000] [Mann-Nachbar and Nachbar 1965] [Manning 1997] [Manning and Bondaryk 1996] [Mao and Lu 2001] [March and Kuenzi 1957] [Marcinowski 2013] [Marsh 1962] [Martins and Silvestre 2019] [Martins and Silvestre 2020] [Mathon and Limam 2006] [Matos et al 2022] [Mazzolani F.M. et al 2010] [McElman et al 1965] [McElman et al 1966] [McGhie 1965] [Mechanical Behavior of Thin 2026] [Mendis] [Mente 1972] [Mescall 1961] [Mescall 1964] [Messager 2001] [Method of Imperfection Random 2025] [Michielsen 1948] [Mikhasev 2017] [Mikulas and Stein 1964] [Misovec and Kempner 1968] [Miyazaki 1987] [Miyazaki and Hagihara 1993] [Miyazaki and Hagihara 2015] [Mizoguchi et al 1984] [Mohammadzadeh et al 2013] [Moskvichev 2016] [Mossakovskii et al 1975] [Mow and Sadowsky 1962] [Mukhin et al 1990] [Mukoed 1970] [Murad and Showkati 2025] [Murakami and Tanaka 1979] [Murti et al 2023] [Musa et al 2025] [Muselemov et al 2024] [Naghdi and Eringen 1965] [Narayana et al 2013] [Naseri Ghalghachi et al 2021] [Naseri Ghalghachi et al 2023] [Natural frequencies of eccentric 2015] [Nemeth 2014] [Nemeth et al 2002] [Nesterchuk 2021] [van der Neut 1962] [Ni et al 2026] [Nickell 1961] [Nimmer and Mayers 1979] [Ninh et al 2015] [NlEDENFUHR and Bert 1966] [Non-homogeneous Axial Compression of 2001] [Nonlinear Buckling and Progressive 2023] [Nonlinear Stability of Circular] [Nonlinear Stability of Circular 2008] [Notenboom and Jansen 2022] [Nott 1962] [Nott 1963] [Novozhilov 1964] [Numerical simulation of inelastic] [Obrecht 1977] [Okafuji et al 2019] [Onoda 1985] [Opoka 2026] [Optimization of a Stiffened 2023] [Orifici and Bisagni 2013] [Orynyak et al 2016] [Osadchuk and Kostenko 1982] [Ostwald 1990] [Ostwald 1996] [Oyesanya 1990] [Oyesanya 2005] [Ozgen and Dogan 2021] [Ozoigbo et al 2025] [Ozolins and Kalnins 2017] [Pal’chevskii 1966] [Pan and Her 1998] [Pan and Leu 1997] [Papirno and Goldman 1969] [Park et al 2000] [Patil et al 2024] [Patrick 1964] [Paudel et al 2023] [Pawlik and Reismann 1970] [Pedersen 1973] [Pellicano 2009] [Pena et al 2018] [Peshkhoev 2026] [Petrov et al 2020] [Pian 1968] [Poonaya et al 2009] [Postbuckling Behavior of Circular 1984] [Prabu et al 2010] [Prabu et al 2010] [Prabu et al 2012] [Przekop] [Przekop et al 2020] [Przekop et al 2022] [Psotny and Havran 2017] [Pulos 1961] [Qian and Wang 2015] [Qin 2025] [Radhakrishnan 1972] [Rafiee and Rezazadeh 2026] [Rafique 2024] [Rais-Rohani 2000] [Raissi 2020] [Ramsey 1987] [Rastgar and Showkati 2017] [Rastgar and Showkati 2018] [Rathinam and Prabu 2015] [Ravulapalli et al 2023] [Ravulapalli et al 2024] [Ravulapalli et al 2025] [Reddy and Calladine 1978] [Redekop 2009] [Redekop and Schroeder 1977] [Redekop and Schroeder 1979] [Rehfield 1970] [Reitinger and Ramm 1995] [Reuter 1970] [Reynolds 1960] [Rezaee and Mehretehran 2024] [Rezaee and Mehretehran 2025] [Rezaee and Mehretehran 2025] [Rezaeepazhand et al 1996] [Rhodes 1980] [Ricardo 1962] [Riddick and Hyer 2001] [Riff and Simitses 1988] [Rikards and Teters 1976] [Ross 2011] [Ross and Humphries 1993] [Ross and Johns 1998] [Ross and Popken 1995] [Ross et al 1965] [Ross et al 1966] [Rotter 2010] [Rotter 2011] [Rotter 2017] [Rouhi et al 2015] [Rudd] [Rudd et al] [Rudd et al] [Rudd et al 2024] [Rudd et al 2025] [Saal 1982] [Saboo and Kumar 2023] [Sadeghifar et al 2010] [Sadovský et al 2021] [Sadovský et al 2024] [Saeger and Lagace 1990] [Safarov et al 2025] [Sai Ram 2023] [Saigal et al 1986] [Saigal et al 1987] [Saksonov 1970] [Salahshour and Fallah 2018] [Sallam and Simitses 1987] [Sam Daliri et al 2019] [Sammari and Jullien 1995] [Samuels 1960] [Samuelson 1966] [Samuelson 1968] [Samuelson 1968] [Samuelson 1968] [Samuelson 1969] [Samuelson 1972] [Sandhu et al 1989] [Sandhu et al 1990] [Santos and Donadon 2023] [Schiller and Bisagni 2022] [Schmidt and Winterstetter 1999] [Schneider et al 1989] [Schultz] [Schultz et al 2016] [Schultz et al 2018] [Sechler 1966] [Seide 1962] [Seide and Hafiz 1975] [Seide and Weingarten 1961] [Seide et al 1960] [Sel’skii 1978] [Senkiv and Diakiv 2019] [Shabeer et al 2025] [Shahrjerdi and Bahramibabamiri 2015] [Shamass et al 2014] [Shamass et al 2015] [Shamass et al 2018] [Shariati and Rokhi 2008] [Shariyat 2008] [Shariyat 2011] [Shariyat and Eslami 1999] [Shaw et al 1952] [She et al 2017] [Sheinman and Goldfeld 2001] [Sheinman and Goldfeld 2003] [Sheinman and Jabareen 2004] [Sheinman and Simitses 1977] [Sheinman and Simitses 1983] [Shell Buckling Experiments 2002] [Shen 1996] [Shen 1997] [Shen and Chen 1991] [Shen and Xiang 2008] [Shen et al 1993] [Shengkun and Wai 2026] [Sherbourne and Korol 1967] [Shi et al 2017] [Shiomitsu and Yanagihara 2020] [Shiomitsu and Yanagihara 2021] [Shiomitsu and Yanagihara 2021] [Shnerenko 1970] [Shnerenko and Godzula 2003] [Shouyi and Ping 2020] [Siad 1999] [Sigova and Doronin 2015] [Sim et al 2023] [Sim et al 2023] [Simitses 1988] [Simitses and Hsiung 1999] [Simitses and Sheinman 1982] [Simitses et al 1985] [Simitses et al 1985] [Singe 1962] [Singer 1962] 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2021] [Stretching and bending in 1983] [Stulhofer 1973] [Sturm 1962] [Sukhinin et al 1979] [Sun 1991] [Sun and Hansen 1988] [Sun and Mao 1993] [Sun et al 2013] [Sun et al 2014] [Sun et al 2015] [Sun et al 2016] [Sun et al 2020] [Sun et al 2022] [Surface Bending and Shell 2001] [Tabiei 1995] [Tabiei and Simitses 1997] [Tabone and Mallett 1987] [Tafreshi 2002] [Tafreshi 2004] [Tafreshi 2004] [Tafreshi 2006] [Tahir and Mandal 2017] [Tahir et al 2021] [Takano 2012] [Tall cylindrical shells under] [Tall cylindrical shells under 2006] [Tang 1966] [Tang and Li 2012] [Taniguchi 2004] [Tatarinov 1983] [Tatarinov 1984] [Tatting and Guerdal 1998] [Teichmann 1985] [Tekleab and Guggenberger 2013] [Teng 1996] [Teng and Barbagallo 1997] [Teng and Rotter 1992] [Tennyson 1963] [Tennyson 1964] [Tennyson 1968] [Tennyson 1969] [Tennyson 1975] [Tennyson 1976] [Tennyson and Muggeridge 1972] [Tennyson et al 1971] [Tennyson et al 1971] [Tests on the buckling 2009] [Thang et al 2016] [Thang et al 2017] [The Brazier effect in 1983] [The Buckling of Cylindrical 1966] [Thermocryogenic Buckling and Stress 1995] [Thielemann 1962] [Thielemann and Esslinger 1969] [Thompson 2025] [Thompson and Sieber 2016] [Thornburgh and Hilburger 2011] [Tian et al 2021] [Tillotson et al] [Tillotson Rudd et al 2024] [Tingleff 1971] [Tomás et al] [Touogam Touolak et al 2022] [Trinh and Weaver 2021] [Trybuła and Krużelecki 2014] [Tsang and Harding 1984] [Tvergaard 1976] [Tvergaard 1983] [Tănase 2024] [Uematsu and Uchiyama 1985] [Uemura 1966] [Ugural 2017] [Ugural and Cheng 1968] [Ullah 2009] [Ustinov 1975] [Uzair et al 2026] [Vasilikis and Karamanos 2008] [Vasyunyk 2003] [Vaziri 2007] [Vaziri and Estekanchi 2006] [Velmurugan and Buragohain 2023] [Vinogradov 1987] [Voce 1969] [Vodenitcharova and Ansourian 1996] [Volpe et al 1980] [von Karman and Tsien 1941] [Vullo 2013] [Waeckel et al 1986] [Wagner et al 2017] [Wagner et al 2019] [Wagner et al 2020] [Wagner et al 2020] [Wagner et al 2020] [Wah 1965] [Wang and Koizumi 2010] [Wang and Ramamritham 1947] [Wang and Sullivan 1952] [Wang and Zhao 2010] [Wang et al 1953] [Wang et al 2018] [Wang et al 2018] [Wang et al 2021] [Wang et al 2022] [Wang et al 2023] [Wang et al 2024] [Wardle 2008] [Wei et al 2005] [Wei et al 2018] [Wei et al 2023] [Weingarten 1962] [Weingarten 1964] [Weingarten 1965] [Weingarten and Reismann 1974] [Weller 1978] [Weller and Singer 1977] [Weller et al 1970] [Wesenberg 1974] [Wetherhold 2012] [White and Weaver 2016] [Wilkins and Love 1974] [Williams 1974] [Wilson and Spier 1963] [Wittek 1982] [Wong et al 2005] [Wood 1958] [Wu 2003] [Wu and Liu 1989] [Wunderlich et al 1982] [Xiang et al 2005] [Xing et al 2019] [Xu et al 2013] [Xu et al 2017] [Xu et al 2026] [Xue 2012] [Xue et al 2005] [Xue et al 2010] [Yabuta 1980] [Yadav and Gerasimidis 2020] [Yaka 2016] [Yamada and Croll 1993] [Yamada and Uchiyama 2008] [Yamada et al 2008] [Yamaki 1969] [Yamaki 1976] [Yamamoto and Yamada 2019] [Yang and Williams] [Yang et al 2021] [Yang et al 2024] [Yang et al 2026] [Yao 1962] [Yao 1962] [Yao 1963] [Yao 1965] [Ye 2003] [Ye et al 2011] [Ye et al 2023] [Ye et al 2024] [Yilmaz and Kocabaş 2021] [Yin 1996] [Yoo and Lee 2011] [Yoo and Lee 2011] [Yoshimura 1955] [Yu et al 2024] [Yuan and Wang 2012] [Zaczynska et al 2021] [Zak et al 1979] [Zamani et al 2014] [Zamani Nejad and Esfandyari 2025] [Zamula 1965] [Zeighampour and Beni 2014] [Zeng and Wu 2003] [Zeng et al 2009] [Zhang 2022] [Zhang et al 2003] [Zhang et al 2015] [Zhang et al 2020] [Zhang et al 2020] [Zhang et al 2022] [Zhao et al 2023] [Zhao et al 2023] [Zhao et al 2025] [Zhao et al 2025] [Zhou et al 2025] [Zhu and Cheung 1996] [Zhu et al 2022] [Zhu et al 2023] [Zhu et al 2025] [Zick 1962] [Zickel 1953] [Zielnica 2013] [Zingoni 2017] [Zintilis and Croll 1986] [Zitzevancih 1985] [Zuo et al 2025] [Żmuda-Trzebiatowski and Iwicki 2017]
Rocket propulsion, engines and their failures
Where the Atlas A’s failures were. Liquid rocket engines, the solid motors of the ballistic missile programmes and of the Atlas line where their subject is one the argument uses, turbopumps and inducers, start transients, combustion instability and engine health monitoring. 87 of its 654 records name an instability and 105 a turbopump or inducer.
654 records. [Rafeeque 2025] [A System Analysis of 2004] [Abbe et al 1967] [Abbe et al 1968] [Acar and Öztürkler 2024] [Agarwal 2023] [Allen 2002] [Analysis of the Influence 2023] [Ananoff 1941] [Anderson et al 1995] [Anderson et al 1996] [Anderson et al 2012] [Anderson et al 2013] [Anderson et al 2015] [Anderson et al 2019] [Andrei 2021] [Andrews et al 2018] [Ankarsward 1972] [Appel and Kruger 1980] [Michigan Univ Ann Arbor 1963] [Armstrong 1952] [Armstrong and Kilner 1953] [Artamanov 1963] [Atamanchuk 2025] [Atefi and Naraghi 2019] [Athavale and Singhal 2001] [Atluri and Kathiresan 1980] [Atluri et al 1981] [Ayran et al 2026] [Bagautdinov et al 2025] [Bai et al 2020] [Bairamov and Bairamov 2022] [Balepin 2001] [Balepin 2006] [Barrère 1977] [Batchelor 1964] [Bazarov 1998] [Beaurain et al 1992] [Beichel and Obrien 1978] [Beltran and Frankel 1965] [Beltran and Kosvic 1966] [Bendot 1974] [Benjamin and McConnaughey 1991] [Bentsman et al 1991] [Benzing et al] [Berg 1968] [Bermudez 2024] [Berque and Georges 1992] [Betti et al 2015] [Biliske and Patel 2024] [Bilogurov et al 2026] [Binder 1993] [Binder 1995] [Bjorklund et al 1979] [Blackman et al 1965] [Blount 1990] [Boccaletto and Lequette 2005] [Borovik et al 2019] [Bosson and Goirand 1999] [Bosson et al 1993] [Bosson et al 1999] [Bouajila et al 2021] [Bower and Thomas 2018] [Boyd et al 1967] [Brock and Franke 2004] [Broomby and Trifoni 2024] [Brown et al 2000] [Bryant 1989] [Buckmann et al 1989] [Buckmann et al 1992] [Burdett 1946] [Burkey 2010] [Burstein et al 1972] [Buswell 2005] [Butas et al 2001] [Byrd and Kynard 2007] [Rocketdyne Canoga Park Ca 1961] [Campbell 1962] [Candler 2001] [Carpenter and Jeffus 1962] [Carpenter and Jeffus 1963] [Casiano et al 2009] [Cha and Ko 2025] [Cha et al 2019] [Cha et al 2024] [Chandler 2023] [Chandler 2023] [Chandler 2024] [Chandler and Bowen 2021] [Chandler and Herrera 2025] [Chandler et al 2002] [Chandler et al 2026] [Chen and Zhao 2005] [Chen et al 2021] [Cheng and Farmer 2002] [Cherkupalli and Sandeep 2022] [Cherniavskyi 2026] [Chiang et al 2007] [Chiu 1987] [Christenson and Holt 1995] [Christison 2024] [Citarella et al 2022] [Clark 1967] [Clark 1967] [Cole et al 2008] [Collins et al 1986] [Collins et al 1990] [Combustion Instability Analysis Numerical 1995] [Combustion Instability of Liquid 2004] [Conley et al 2003] [Contreras et al 2026] [Coogan 2015] [Cosens and Newton 1988] [Cox 1988] [Crabtree 1962] [Crocco 1965] [Crocco et al 1962] [Crone et al 1993] [Cruz et al 2025] [Cunningham et al 1986] [d’Agostino et al 2017] [Das and Padmanabhan 2022] [Dawson et al 2013] [de Iaco Veris 2020] [DeHoff et al 1993] [Delcher et al 1989] [Demiyanenko et al 2004] [Demjanenko et al 2003] [Dequay et al 1991] [Desai and Kuzhiveli 2022] [Design data book phase 1972] [Dethloff 1961] [Di Matteo et al 2009] [Di Matteo et al 2011] [Disimile et al 1991] [Dissel et al 2012] [Dorney et al 2005] [Dorosh and Leontiev 2014] [Dougherty 2010] [Drobyshev 2026] [Du 2017] [Dubois et al 1995] [Dunn et al 1999] [Ekimogloy et al 2026] [Eklund 2004] [Ellerbrock and Ziegenhagen 2006] [Ellis et al 1953] [Emrich 2016] [Emrich 2023] [Ennix and Coleman 1987] [Erickson and Erickson 1997] [Etters and Flurchick 1981] [Ezell 1960] [Fagherazzi et al 2023] [Farvin and Peddieson 1988] [Fashbaugh and Streeter 1965] [Fatuev 2006] [Feng et al 2009] [Ferraiuolo et al 2023] [Fidler and Hays 2026] [Fidler et al 2025] [Figueroa et al 2010] [Filimonov 1968] [Filin and Mkrtchyan 2021] [Fint et al 2005] [Fiore et al 2024] [Flandro et al 2004] [Forde et al 2006] [Foster et al 1989] [France’s Liquid Propellant Rocket-Engine 2006] [Franklin and Tinsley 1970] [Freeman 2015] [Friedland 1965] [Fujita et al 2002] [Fuller 1973] [Furst 1973] [Furst 1975] [Gajjar and Malhotra 2018] [Galati and Elkins 1996] [Galati and Elkins 1997] [Gale et al 2018] [Galli] [Ganesan et al 2025] [Gao and Sun 2009] [Gao et al 2023] [Gardner et al 1991] [Gass et al 1988] [Gaynor and Cervisi 1984] [Gemranova 2021] [Genge 1991] [Gibart] [Gibson 1985] [Glidden and Wilhite 2014] [Gloger et al 2020] [Gloger et al 2021] [Glushko 1976] [Go et al 2017] [Goertz 1995] [Goetz et al 2005] [Goirand et al 2003] [Gompertz 1950] [Gong et al 2017] [Gordon 1950] [Gordon and Brown 1963] [Gotsulenko 2008] [Graefe and Gordon 1957] [Graefe et al 1954] [Gray et al 2024] [Green 1966] [Greene et al 1999] [Greenwald 1971] [Greenwood et al 1970] [Grenda et al 1991] [Grey 1953] [Grey 1954] [Gritsenko et al 2024] [Grosdemange and Schaeffer 1990] [Guidolotti and d’Agostino 2023] [Gulczyński et al 2024] [Gurov 2001] [Haberstroh et al 2008] [Haga 2024] [Hagar and Alcock 1989] [Ham-Battista et al 1993] [Hampson 1984] [Hardesty 1970] [Harrje 1959] [Harvazinski et al 2014] [Harvazinski et al 2024] [Hauser and Helfrich 1963] [Heister 2008] [Heister 2011] [Heldens et al 2026] [Herbertz et al 2001] [Hiers et al 2003] [Hildner and Arnold 1966] [Hiraki et al 2019] [Holloway and Limerick 1993] [Holt and Monk 2009] [Hong and Choi 2017] [Hong et al 2009] [Hong et al 2012] [Hong et al 2012] [Honkawa and Yoozbashizadeh 2019] [Hood et al 1970] [Houhou et al 2025] [Hu et al 2026] [Huang 1985] [Huang 2000] [Huang and Weber 1998] [Huang and Weber 1999] [Huang et al 1997] [Huang et al 2000] [Huang et al 2024] [Huang et al 2024] [Huang et al 2025] [Hulka 2008] [Hulliger et al 2026] [Hunley 2008] [Hussein et al 2026] [Instability Phenomenology and Case 1995] [Instability Phenomenology and Case 1995] [Instability Phenomenology and Case 1995] [Ivanov 2021] [Ivanov and Borisov 2014] [Jacob and George 2024] [Jacob et al 2010] [Japan’s Liquid Propellant Rocket-Engine 2006] [Jassowski et al 1991] [Jensen 2001] [Jensen 2005] [Jensen et al 1962] [Jetevator for rocket engine 1998] [Jha 2024] [Jo et al 2021] [Jones and Petley 1991] [Jorgensen et al 2022] [Jugade 2023] [Jung 2022] [Jurado et al 1990] [Kachler and Beaurain 2005] [Kakudo et al 2021] [Kakudo et al 2025] [Kanda 2013] [Kang et al 2015] [Kassoy 2013] [Kato et al 1995] [Kawatsu 2019] [Kawatsu et al 2011] [Kayama and Takenaka 1980] [Kerstens et al 2021] [Kim et al 2004] [Kim et al 2020] [Kimura et al 2005] [Kiris et al 2000] [Kishimoto et al 2022] [Kobayashi et al 2011] [Kobayashi et al 2015] [Koelbl 1993] [Koelbl 1993] [Komar and Christenson 1996] [Kosykh 2025] [Kozlov et al 1996] [Krevor and Wilhite 2007] [Kubicki et al 2020] [Kuhl et al 1998] [Kunz 1967] [Lacaille 2012] [Lafont and Bosson 1983] [Larson 1973] [Lash and Moeller 2015] [Lawrence 1945] [Leahy and Williams 2007] [Lee and Roh 2013] [Lee et al 2016] [Lee et al 2018] [Lee et al 2018] [LeMoyne 2008] [Leonard and Kisko 1992] [Leonardi et al 2017] [Lepsch et al 1990] [Leto et al 2016] [Levack and Sack 2013] [Levack and Sack 2013] [Lewis and Harrison 1961] [Li et al 2011] [Li et al 2019] [Li et al 2019] [Li et al 2023] [Li et al 2026] [Liang et al 2022] [Life prediction of the 1995] [Limerick 1991] [Limerick 1994] [Lin et al 2010] [Liquid propellant rocket engines] [Liquid Propellant Rocket Engines 2006] [Liquid Propellant Rocket Engines 2006] [Liquid Propellant Rocket Engines 2006] [Liquid Propellant Rocket Engines 2006] [Liquid Propellant Rocket Engines 2006] [Liquid Propellant Rocket Engines 2006] [Liquid Propellant Rocket-Engine Organizations 2006] [Liquid rocket booster study 1988] [Liquid Rocket Engine Combustion 1995] [Liquid Rocket Engine Thrust 2018] [Liquid Rocket Engines 2019] [Liquid Rocket Propellants 2019] [Liu and Qizhi 1996] [Liu et al 1995] [Liu et al 2022] [Liu et al 2025] [Long et al 2013] [Lorenzo 1995] [Lucci and Hodson 1975] [Lurui Xia et al 2008] [Muthaiah et al 2023] [Maggio and Gerez 1996] [Maggio and Pellacio 2000] [Manski and Fina 1994] [Manski and Martin 1988] [Manski and Martin 1991] [Manski et al 1997] [Marchan 2026] [Martin 1962] [Martin 1995] [Martin 2007] [Martinez et al 1990] [Mathias and Motiwala 2015] [Mathieu et al 1990] [Matthews 1957] [Matveev et al 2018] [Mayer and Kruelle 1992] [McAmis et al 1992] [McGinnis and Joyner 2005] [Meisl 1986] [Meisl 1988] [Meisl 1989] [Meisl 1992] [Merits of Liquid Propellant 2006] [Meyer and Zakrajsek 1990] [Lyon Inc Detroit Mi 1963] [Mitchell 1969] [Mohammadi et al 2015] [Moore et al 2024] [Morash et al 1995] [Moruzzi et al 2018] [Mosolov and Sidlerov 2019] [Motomura 2025] [Mozgov et al 2013] [Mueller 1966] [Mueller et al 1999] [Multifractal Detrended Fluctuation Analysis 2023] [Mundt et al 2024] [Murphy and Voss 1996] [Muthaiah et al 2025] [Müller et al 2017] [Design criteria monograph on 1975] [Nakane et al 2009] [Nakanishi et al 1982] [Naraghi et al 2006] [Nardi Rezende 2018] [Negishi et al 2008] [Nesbitt 1946] [Newell and Rajagopal 1993] [Nguyen and Knowles 2002] [Nguyen et al 1988] [Nicastro et al 2025] [Nie and Liu 2011] [Princeton Univ Nj 1952] [Numerical Method and Simulations 2016] [Numerical Studies on the 2003] [Nusca 2007] [Nusca 2008] [Nusca 2010] [Cornell Aeronautical Lab Inc Buffalo Ny 1947] [Excelco Developments Inc Silver Creek Ny 1963] [Oh et al 2024] [Okayasu et al 2002] [Ordway 1991] [Osborn and Davis 1961] [Osherov and Natan 1999] [Oyama and Liou 2001] [Ozaki et al 2025] [Ozelsel] [Pages and Achipa 2026] [Palac 1999] [Palaszewski 1990] [Palaszewski and Powell 1991] [Park and Ahn 2020] [Park and Jeon 2024] [Parsley 1989] [Patel 2016] [Patel 2016] [Patel et al 2019] [Patel et al 2025] [Pearce 1972] [Pempie and Ruet 2003] [Pempie and Vernin 2001] [Penner 1954] [Perkins 1987] [Perlmutter and DePierre 1965] [Pervaiz et al 1994] [Pizzarelli 2021] [Pizzarelli 2021] [Podolchak 2019] [Pooley et al] [Popov and Sirignano 2015] [Popov et al 2013] [Popov et al 2014] [Popov et al 2015] [Popov et al 2016] [Popov et al 2017] [Popp and Schmidt 1996] [Powell et al 1975] [Prochnicki et al 2018] [Prokopenko 2026] [Pshenychka 2026] [Pustovyi 2026] [Qi et al 2021] [Qi et al 2022] [Qin et al 2016] [Anisha Selva Kala et al 2027] [Black et al 1967] [Chen et al 1993] [Cheng 1954] [Combs and Lawhead 1963] [Du et al 2020] [Radovcich 1965] [Rafferty 1968] [Rai 2006] [Reardon 1997] [Reeves et al 2024] [Reinhardt 1968] [Reitan 1992] [Report, status, mass properties 1972] [Rezende 2021] [Rice et al 2010] [Fio Rito 1964] [Garcia et al 1998] [Gradl et al 2019] [Harrje and Sirignano 1966] [Huzel and Huang 1967] [Jung 2019] [Klem 1990] [Marsh and Cowan 1994] [Mellish 1981] [Mitchell 1967] [Morgan et al 2015] [Platt and Hanner 1965] [Ray 2003] [Rocket Engine Nozzle Concepts 2004] [Rocket engine propulsion ‘system 1992] [Rodríguez Otero et al 2020] [Rose and Niemeyer 2021] [Rothmund 2006] [Rupert 1965] [Ruth et al 1990] [Sackheim 1992] [Saidyanathan et al 2000] [Sales and Pasini 2021] [Sander and Leahy 1993] [Santhini S Lal et al 2015] [Santhoshkumar et al 2026] [Santiago 1996] [Sarotte] [Scala 1957] [Schallhorn et al 1998] [Schmehl and Steelant 2003] [Schoettle and Rahn 1993] [Schwabacher 2005] [Scott 1963] [Senchev et al 2022] [Sensor Failure Management in 2020] [Sergienko et al 1995] [Shelley et al 2001] [Shi et al 2023] [Shoyama et al 2024] [Shyy et al 1999] [Siebenhaar and Campbell 1987] [Singelmann and Mueller 1948] [Sirignano and Krieg 2016] [Sirignano and Popov 2013] [Skopinsky and Berkov 1994] [Sliusariev 2025] [Smith and Stechman 1981] [Sobin et al 1977] [Son et al 2012] [Space Transportation Booster Engine 1986] [Space transportation booster engine 1989] [Space Transportation Booster Engine 1989] [Space transportation booster engine 1989] [Space transportation booster engine 1989] [Sprouse et al 2018] [Stability Testing Methodology Scaling 1995] [Stanley 1969] [Stanley et al 1992] [Stanley et al 1994] [Staschus and Frederick 2016] [Stout 2020] [Strauss 1964] [Strokach et al 2020] [Stuber et al 2012] [Suda et al 2007] [Sukachevskyi 2026] [Summerfield 1951] [Summerfield 1960] [Sung et al 2025] [Sutton 1968] [Sutton 1970] [Sutton and Lariviere 1993] [Swaraj et al 2023] [Takada et al 2009] [Takahashi and Gibson 2014] [Talley 2002] [Tanck and Steadman 1998] [Tani et al 2008] [Tani et al 2010] [Tavares and Ceotto 2021] [Teasley et al 2025] [Tellier 1964] [The thermal rocket engine] [Thomas 2022] [Tobey and Bastress 1966] [Tonon et al 2022] [Torre et al 2018] [Torres Zanardi et al 2019] [Transient Heat Transfer and 2004] [Traudt 2024] [Traxinger et al 2019] [Trikha et al 2008] [Tripropellant Engine Technology for 2004] [Tucker et al 1993] [Tucker et al 1998] [Tulpule 1989] [Turner 2009] [Turushov et al 1995] [Twardy 1975] [Uemura] [Urbano et al 2016] [Vadera 2019] [Valentine and Gradl 2019] [Van Hooser et al 1999] [Vasilevsky 2022] [Ventrice et al 1979] [Verma et al 2007] [Vilja and Vilja 1997] [Von Eckartsberg et al 2025] [Walker and Baumgartner 1990] [Walsh and Jacoby 1972] [Wang 2019] [Wang and Fan 2013] [Wang et al 2011] [Wang et al 2021] [Wang et al 2022] [Wang et al 2025] [Watanabe and Mikami 2010] [Wei et al 2015] [Wei et al 2022] [Weiss and Merkle 1991] [Wheelock and Kraemer 2005] [Whitehead 1996] [Wilhite 1978] [Williams 1968] [Williams 2004] [Williams 2004] [Wiswell and Huggins 1990] [Wong and Brown 1965] [Wu 2005] [Wu 2026] [Wu et al 2026] [Wunderlin et al 2024] [Wyett et al 1989] [Xiang 2023] [Xiong 2018] [Xiong et al 2020] [Xu et al 2006] [Yada et al 2018] [Yamanishi et al 2003] [Yang et al 2019] [Yang et al 2025] [Yonezawa et al 2013] [Yoon et al 2005] [Yoon et al 2012] [Yoon et al 2013] [You et al 2021] [Young 1964] [Young 1964] [Young 2008] [Youngquist 1947] [Yu et al 2019] [Yue et al 2011] [Yue et al 2019] [Yunfeng 2024] [Zeng et al 2021] [Zhang 2016] [Zhang 2026] [Zhang and Li 2017] [Zhang et al 1998] [Zhang et al 2025] [Zhang et al 2026] [Zhou et al 2022] [Zhou et al 2024] [Zhou et al 2026] [Zhuang et al 1998] [Zhuang et al 1999] [Zinn 1966] [Zinn 1968] [Zinn and Powell 1971] [Zinn and Savell 1969] [Zubanov and Shabliy 2014] [Zubanov et al 2018] [Zubanov et al 2018] [Zucrow 1947]
Propellant tanks, cryogenic storage and boil-off
The tank as a container rather than as a structure. Cryogenic storage, self-pressurisation and stratification, pressurant systems, insulation, common bulkheads, composite tanks and the cryogenic properties of stainless steels. 77 titles name boil-off and 31 the common bulkhead, and the cluster’s median publication year is 2012, so half of it is more recent than that and belongs to the period of long-duration cryogenic upper stages rather than of a missile topped up until launch.
734 records. [Abdelghany et al 2025] [Omsk State Technical University et al 2022] [Adams et al 1999] [Adler and Martins 2025] [Afzali et al 2009] [Aggarwal and Hull 2015] [Aggarwal and Hull 2015] [Aggarwal and Hull 2015] [Aggarwal and Hull 2016] [Aggarwal and Hull 2016] [Agrawal et al 2017] [Ajeesh et al 2026] [Akimov et al 2019] [Akmandor and Nagashima 1999] [Al Ghafri et al 2022] [Alper 1964] [Alsultan et al 2021] [Ambur et al 1996] [Andreasen 2026] [Angirasa 2015] [Anschutz 1960] [Aoki and Ota 1986] [Appel et al 2025] [Arens 2010] [Arens et al 2010] [Armstrong 1989] [Armstrong and Schlumberger 1990] [Ashok et al 2025] [Avila et al 2016] [Baek et al 2025] [Bai 2006] [Bailey et al 1986] [Baker 2003] [Balasubramaniam and Johnson 2020] [Bandyopadhyay et al 2019] [Banerjee and Bardhan 1979] [Banerjee et al 2011] [Baralle and Fournier 1989] [Barker and Field 2003] [Barron and Timmerhaus 1969] [Barrows 1968] [Barsi and Kassemi 2008] [Bartrand 1988] [Batul et al 2020] [Bauer 1964] [Beck and Mallon 1966] [Benkelman et al 2017] [Bentley et al 2023] [Benton and Debreceni 2004] [Benton et al 2007] [Berglund et al 2006] [Berglund et al 2007] [Berglund et al 2009] [Bershadskyi et al 2022] [Bickford 1987] [Blakseth et al 2025] [Bott et al 1983] [Bowen and Marchetta 2022] [Brennan 1967] [Brinckman et al 2025] [Brown and Robertson 1966] [Byron and Morse 1968] [Cady and Blackmon 1974] [Cady and Kendle 1972] [Cady and Kendle 1973] [Cai et al 2018] [Cai et al 2019] [Cankaya and Arnold 2006] [Chakroborty et al 2006] [Chandler 2019] [Chato 2009] [Chato et al 2014] [Chau-Vo et al 2024] [Chausov et al 2025] [Chausov et al 2026] [Chehroudi 2009] [Chehroudi 2010] [Chen and Anderson 1972] [Chen and Liang 2013] [Chen et al 2025] [Cheng et al 2024] [Cheng et al 2025] [Cheng et al 2025] [Cheng et al 2026] [Cheriaux and Fraïoli 2011] [Chiu and Brown 2017] [Cho et al 2004] [Cho et al 2022] [Choi and Lee 2023] [Choi et al 2024] [Christian 1962] [Christian et al 1962] [Christian et al 1963] [Christie 2006] [Chung 2026] [Chung et al 2022] [Ciccotosto and Hauser] [Ciccotosto and Hauser 2021] [Clapp and Hunter 1993] [Colquitt 1968] [Colquitt 1969] [Comparative Study of the 2024] [Controlled pressurization of the 2020] [Cooper et al 2024] [Coxe and Tatom 1962] [Crosby et al] [Cui et al 2024] [Dahlene et al 1969] [Dai et al 2026] [Daigle et al 2011] [Dalder and Juhas 1985] [Davis et al 2005] [Debreceni et al 1995] [Debreceni et al 1996] [Debreceni et al 2003] [Debreceni et al 2004] [DeLong et al 2007] [Der and Stevens 1987] [Design of Turbopump Propellant 1992] [Dimmer and Adam 2021] [Ding et al 2018] [Dobben et al 2024] [Dodge 1966] [Dooley 1989] [Dorsey et al 2000] [Dowty and Murphy 1995] [Van Dresar and Stochl 1993] [Drew 1965] [Ducret et al 1996] [Dudley et al 1992] [Duffell 2005] [Durteste 2007] [Dussollier and Teissier 1993] [Easley et al 2019] [Eidson 1992] [Ellion et al 1977] [Enhanced reliability drain safety 2021] [Epstein 1967] [Epstein 1969] [Epstein and Anderson 1995] [Estey et al 1983] [Evaluation of materials for 1967] [Evaluation on the Regenerative 2004] [Fan et al 2026] [Farahmand et al 2004] [Fauquet-Alekhine 2026] [Fedotowsky et al] [Feng et al 2010] [Fernandes et al 2025] [Ferris 1967] [Fester 2003] [Figueroa et al 2003] [Figueroa et al 2004] [Flachbart 2002] [Flack et al 1969] [Forth et al 2006] [Foulds et al 2024] [Fracture control plan for 1981] [Friedman and Bhat 1986] [Froning et al 1995] [Fu et al 2024] [Gale and Moedt 1962] [Gangeh et al 2023] [Gaynor et al 1992] [Gehring and Mantz 1965] [Geyari 1976] [Gitter and Leachman 2024] [Glass 1997] [Gluck and Kline 1961] [Gontarovskyi et al 2023] [Gontarovskyi et al 2024] [Graf et al 2000] [Grayson et al 2006] [Greene and Vaughan 1998] [Greenfield 1960] [Greer 2000] [Griffin et al 2012] [Guangshang and Xiaosha 2006] [Guiles 1995] [Guimarães and Cordeiro Guerrieri 2021] [Guo et al 2020] [Guo et al 2022] [Guo et al 2025] [Guo et al 2025] [Guo et al 2026] [Guofeng et al 2013] [Guoyuan and Xiu-Tian 2014] [Gursu et al 1992] [Haberbusch et al 2002] [Hafkemeyer 2003] [Hall and Finger 1972] [Hamlet 1975] [Hanna and Stephens 1991] [Hansen and Williamsen 1988] [Harris 2003] [Hartwig 2016] [Hartwig and Clark 2022] [Hartwig et al 2016] [Hassall] [Haynes and Fabian 2015] [He and Yin 2025] [Hedayat et al 2017] [Heidelberg 1965] [Herbertz and Selzer 2012] [Hibbs et al] [Himeno et al 1999] [Himeno et al 2001] [Hines et al] [Ho 2008] [Ho and Rahman 2006] [Ho and Rahman 2007] [Ho and Rahman 2012] [Hodge 2001] [Holden 1967] [Honour et al 2012] [Horiguchi 2002] [Horton et al 2020] [Hosangadi and Madavan 2008] [Huang et al 2024] [Hughes 2025] [Humphrey 1961] [Hurwitz 1966] [Hutchinson and Olds 2004] [Ikeda et al 1990] [Imai et al 2020] [Instability Phenomenology and Case 1995] [Integrated Thermal Monitoring for 2025] [Iyenagbe et al 2024] [Jacobs 1964] [Jan and Aaron 1990] [Jha et al 2003] [Jha et al 2003] [Jha et al 2010] [Jha et al 2011] [Jiang et al 2006] [Jiang et al 2020] [Jiao et al 2024] [Jiawei 2024] [Jo and Choi 2025] [Johnson et al 1998] [Johnson et al 2004] [Johnson et al 2005] [Joseph et al 2017] [Kadbane et al 2020] [Kalanidhi 1988] [Kamijo 1983] [Kamijo et al 1981] [Kamijo et al 1982] [Kana and Gormley 1967] [Kang et al 2007] [Kang et al 2008] [Kang et al 2018] [Kanmuri et al 1989] [Kaplan 1961] [Karmarkar et al 2025] [Kartuzova and Kassemi] [Kartuzova and Kassemi 2019] [Kartuzova et al] [Kartuzova et al 2026] [Kassemi] [Kassemi et al 2017] [Kassemi et al 2018] [Kassemi et al 2018] [Kawanami et al 2020] [Kawanami et al 2021] [Kazantsev et al 2025] [Kendle 1970] [Kerebel and Dugat 1986] [Khan and Din 2025] [Khawand et al 2000] [Khemis et al 2003] [Khemis et al 2004] [Kim et al 2024] [Kim et al 2025] [Kim et al 2026] [Kinefuchi et al 2020] [King and Salvaggi 1975] [Knauer and Edman 1991] [Ko et al 2026] [Koch 2023] [Kodati et al 2020] [Koga et al 2021] [Koike et al 2026] [Kokan et al 2014] [Kolek et al 1978] [Komatsu and Ohyagi 2001] [Korolkov et al 2023] [Kovach et al 2000] [Kramer et al 1984] [Kulkarni et al 2013] [Kumar and Sleiti 2024] [Kundu and Bangham 2022] [Kundu et al 2026] [Kuroedov et al 2021] [Kwon et al 2012] [L’Heureux 1987] [Propulsion Division Propulsion and Vehicle Engineering Laboratory 1965] [Lacefield and Sprow 1994] [Lan et al 2024] [Lant et al 2008] [Lapilli 2015] [Larbalestier and King 1973] [Laygo et al 2025] [Lebrun and Ngendakumana 1990] [LeClair and Majumdar] [LeClair and Majumdar 2010] [Lee and Baek 2026] [Lee and Kim 2025] [Lee et al 2023] [Department of Smart Manufacturing Engineering et al 2024] [Lee et al 2024] [Lee et al 2026] [Lei et al 2015] [LeMoyne 2008] [Leng et al 2026] [Li 2002] [Li and Liu 2025] [Li et al 2015] [Li et al 2019] [Li et al 2019] [Li et al 2021] [Li et al 2023] [Li et al 2024] [Li et al 2025] [Li et al 2026] [Liang et al 2022] [Lin and Hasan 1992] [Liquid Oxygen Test of 2009] [Liu 2017] [Liu and Yuan 2025] [Liu and Yuan 2025] [Liu et al 2015] [Liu et al 2016] [Liu et al 2016] [Liu et al 2016] [Liu et al 2016] [Liu et al 2017] [Liu et al 2021] [Liu et al 2023] [Liu et al 2024] [Liu et al 2024] [LN 2 storage test and damage 2007] [Lopez and Rajkumar 2025] [Louie et al 1985] [Lu and Hui 2015] [Lu et al 2021] [Lu et al 2025] [Lu et al 2026] [Ludwig and Dreyer 2012] [Ludwig and Dreyer 2014] [Luo et al 2022] [Lux and Haidn 2009] [Little Arthur D Inc Cambridge Ma 1963] [Ma et al 2020] [Ma et al 2022] [Majumdar and Leclair 2025] [Majumdar and Steadman 1999] [Majumdar and Steadman 2001] [Majumdar et al] [Majumdar et al 2007] [Majumdar et al 2016] [Majumdar et al 2016] [Majumder 2019] [Mandell and Roudebush 1965] [Mandell and White 1960] [Manimaran and Hiremath 2019] [Masuda et al 2013] [Masuda et al 2014] [Masumoto et al 1984] [Matsumoto et al 1996] [Mayer and Tamura 1996] [Mazandarany et al 1980] [McElwain and Noonan 2001] [McHenry 1983] [McLean et al 2011] [Mei 1990] [Mendolia and Mauneau 1980] [Mer et al 2016] [Mercado and Hartwig 2024] [Merkel et al 2021] [Messinger and Pulley 2003] [Mishra and Ghosh 2017] [Mizutani et al 2006] [Momenthy 1964] [Morales-Ospino et al 2023] [Moreira and Magnabosco 2023] [Morey and Koshar 1961] [Morino et al 1999] [Morino et al 2001] [Morita 1964] [Moser and Keith 1992] [Moxson et al 1987] [Mulkey and Lineberry 2012] [Multi-objective Optimization of Hydroforming 2022] [Murugan et al 2026] [Nam et al 2019] [Nandi 2001] [Narayana Yenugula et al 2025] [Narayanan 2014] [Nast and Williams 1967] [NDE of heavy wall 1996] [Nein and Head 1962] [Nein and Thompson 1965] [Nein and Thompson 1966] [Nemeth 2010] [Netter et al 1999] [Nguyen 2004] [Nguyen 2007] [Nguyen et al 2019] [Nguyen et al 2025] [Nikolayev and Komatsu 2004] [Nikonchuk 2026] [Nohara et al 1983] [Nuclear shuttle systems definition 1971] [O’Neill et al 2025] [Odom 1979] [Ogasawara et al 2013] [Ogata 2006] [Ogata and Balachandran 2010] [Ogata et al 2000] [Ok 2024] [Ok et al 2023] [Okayasu et al 1983] [Oliphant and Japikse 1999] [Oliver and Harper 2012] [Padawer 1960] [Panzarella and Kassemi 2003] [Park et al 2005] [Pasley 1972] [Pastuszko et al 2024] [Patel 2026] [Patel and Williams] [Patel and Williams 2024] [Patel et al 2024] [Peng et al 2026] [Perrin 2023] [Peterson and Uney 1978] [Phillips and Wingate 2010] [Phillips and Wingate 2011] [Pierce 1965] [Pietrzyk et al 1993] [Plachta 2001] [Plachta and Guzik 2014] [Plachta et al 1993] [Plachta et al 2016] [Plachta et al 2017] [Popov et al 2014] [Potter et al 2007] [Prasanraj 2019] [Praveen et al 2022] [Pressurization of Liquid Propellant 2019] [Price 1980] [Price et al 1992] [Puthettu Muraleedharan et al 2023] [Read and Reed 1981] [Reducing boil-off from cryogenic 1971] [Ren et al 2018] [Renitha P and Sivaramapandian J 2016] [Reske and Brodnick 2024] [Rhee et al 2025] [Ricci et al 2022] [Ricci et al 2023] [Riccius et al 2001] [Riemer 1986] [Rijin et al 2017] [Rivers 1999] [Rivers 1999] [Roberts et al 2001] [Robertson 1964] [Robertson 1965] [Robinson 1994] [Robinson 2006] [Robinson 2008] [Robinson et al 2002] [Robinson et al 2004] [Rollins et al 1983] [Rollins et al 1984] [Rollins et al 1986] [Rollins et al 1988] [Rose et al 2024] [Rosso and Golben 1987] [Rossoni 1990] [Rotenberg 1986] [Rotenberg et al 1986] [Ryś 2014] [Sa et al 2005] [Sabri et al 2012] [Sabri et al 2013] [Sachdev et al 2009] [Saha et al 2025] [Sakaki et al 2016] [Sakamoto et al 1984] [Sakamoto et al 1986] [Sakowski et al 2019] [Sanger et al 1966] [Sasmal et al 1991] [Sato et al 2020] [Saucillo et al 1991] [Sauter et al 2006] [Schallhorn et al 2006] [Scheufler and Gerstmann 2022] [Schieb et al 2006] [Schila et al 2025] [Schmidt 1991] [Schneider et al 2007] [Scholz et al 1992] [Schwanekamp 2014] [Sealed-form, constrictive-wrapped, external insulation 1963] [Segado et al 2010] [Senchev et al 2024] [Seo et al 2018] [Seo et al 2026] [Shapiro and Lee 1989] [Shen et al 2022] [Shimoda et al 2001] [Shimoda et al 2002] [Shimura and Kamijo 1985] [Shinohara et al 1980] [Shriver 1964] [Sichler et al 2018] [Sichler et al 2018] [Siewert et al 1990] [Simmons et al 2005] [Singh et al 2022] [Singh et al 2024] [Sisk 1993] [Skoczeń 2004] [Smith et al 2002] [Soller et al 2017] [Soltaninia et al 2025] [Soriano et al] [Soriano et al 2025] [Souverein et al 2019] [Space vehicle fuel tank 2021] [Stephens and Cartagena 2015] [Stephens and Hanna 1991] [Steward 1975] [Stewart and Moder 2016] [Stickler and Keller 1998] [Stinson and Gross 1972] [Stone 1966] [Stone 1972] [Stout and Snell 1999] [Stout and Snell 2000] [Strauss and Bzik 1992] [Studhalter 1964] [Su 2017] [Suemune et al 1986] [Sun et al 2015] [Sun et al 2024] [Sun et al 2025] [Swanger and Guerrero Nacif 2022] [Swanger et al 2016] [System Engineering Challenges in 2023] [Szelinski et al 2012] [Słowiński and Piekarczyk 2021] [Takamatsu et al 1986] [Takemoto 1988] [Taliaferro and Darr 2024] [Tam et al 1996] [Tam et al 1997] [Tam et al 1998] [Tam et al 2000] [Tam et al 2002] [Tam et al 2003] [Tam et al 2008] [Tank pressurization system modernization 2013] [Tatom et al 1964] [Taylor et al 1984] [Teia 2025] [Teissier and Bass 1995] [Tesny and Hauser 2019] [Thornton and Hochstein 2001] [Thorpe 1991] [Tiwari et al 2005] [Tobler and Reed 1979] [Tobler et al 1978] [Tomsik 2002] [Tomsik and Meyer 2010] [Tone et al 1986] [Torano et al 2001] [Toro Medina et al 2015] [Torre 1986] [Torre et al 1986] [Truong et al 2018] [Trushlyakov and Urbansky 2023] [Trushlyakov et al 2020] [Trushlyakov et al 2024] [Tunc et al 2001] [Tuo et al 2026] [Tyler 1965] [Ushakov and Shcherbakov 2021] [Chippy and Sonkar 2025] [Dewitt 1969] [Dowty 1967] [Ewart and Dergance 1978] [Fesmire et al 2011] [Hatfield and Jumper 2012] [Hwang 1964] [Jeon et al 2025] [Kang et al 2022] [Kim and Kim 2025] [Kim and Lee 2025] [Leng et al 2025] [Li et al 2020] [Macconochie et al 1982] [Majumdar and LeClair 2024] [Muratov et al 2011] [Mustafi et al 2008] [Parker et al 2011] [Rafique 2024] [Regalado Reyes 2015] [Richardson et al 2014] [Sedgwick and Middleton 1966] [Seo et al 2023] [Smith and Bender 1963] [Swanger et al 2023] [Toro Medina et al 2016] [Vacuum deposition of stainless-steel 1971] [Valy and Coquet 1990] [VanDresar and Zimmerli 2014] [Vietze et al 2017] [Visek 1986] [Visek 1987] [Vishnu and Kuzhiveli 2019] [Vishnu and Kuzhiveli 2019] [Vishnu and Kuzhiveli 2022] [Vishnu and Kuzhiveli 2022] [Vishnu et al 2018] [Viswanath et al 2022] [Vonpragenau 1984] [Voth et al 1974] [Voyer and Weil 1965] [Voyer and Weil 1966] [Wakefield 1986] [Walker 2008] [Walker 2010] [Walker et al 2017] [Wang and Yang 2016] [Wang and Zhou 2020] [Wang and Zoeckler 2015] [Wang et al 2013] [Wang et al 2014] [Wang et al 2017] [Wang et al 2019] [Wang et al 2021] [Wang et al 2023] [Wang et al 2025] [Wang et al 2026] [Warren and Anderson 1967] [Webster et al 2012] [Weiss and Goodman 1960] [Whitcombe 1961] [White 1972] [Wickman 1994] [Willen et al 2005] [Winter and Kassemi 2026] [Worlund et al 1985] [Wu and Lepsch 1999] [Wu and Lepsch 2000] [Wu et al 2012] [Wu et al 2013] [Wu et al 2015] [Wu et al 2022] [Xavier et al 2020] [Xia et al 2023] [Xiao et al 2008] [Xiao et al 2026] [Xin and Jie 2006] [Xin et al 2019] [Xu et al 2013] [Xu et al 2021] [Xu et al 2024] [Xu et al 2025] [Xu et al 2025] [Yan et al 2021] [Yan et al 2025] [Yang 2006] [Yang and Brodnick] [Yang and Sun 2012] [Yang et al] [Yang et al 2023] [Yang et al 2023] [Yang et al 2025] [Yin et al 2025] [Yokozeki et al 2004] [Yokozeki et al 2005] [Yoon and Moon 2026] [Young et al 1998] [Yu et al 2023] [Yu et al 2024] [Yu et al 2025] [Yu et al 2025] [Yu et al 2026] [Yu et al 2026] [Yu et al 2026] [Yuwei et al 2024] [Zakar et al 2015] [Zarubin et al 2015] [Zhai et al 2022] [Zhai et al 2023] [Zhai et al 2025] [Zhang et al 2012] [Zhang et al 2020] [Zhang et al 2023] [Zhang et al 2023] [Zhang et al 2024] [Zhang et al 2024] [Zhang et al 2025] [Zhang et al 2025] [Zhang et al 2025] [Zhang et al 2025] [Zhang et al 2025] [Zhang et al 2026] [Zhang et al 2026] [Zhao et al 2012] [Zhao et al 2026] [Zheng et al 2020] [Zheng et al 2022] [Zhu et al 2018] [Zidane et al 2022] [Ziglar 2025] [Ziglar 2025] [Ziglar and Elsperman 2026] [Zilliac and Karabeyoglu 2005] [Zimmerli et al 2010] [Zimmerli et al 2015] [Zimmerman et al 2013] [Zimmerman et al 2015] [Zook 2024] [Zumbo et al 2026] [Zumbo et al 2026] [Zuo et al 2019] [Zuo et al 2025]
Trajectory, guidance and control
The ascent and its control. Ascent trajectory optimisation, inertial and radio guidance, thrust vector control and launch-vehicle flight control. 28 titles name inertial guidance and 61 thrust vector control.
361 records. [A method for determining 1979] [Ables 2014] [Adams and Stoll 1969] [Adelfang and Smith 1998] [Ahmad et al 2019] [Ahrazoğlu 2023] [Alcock and Hagar 1989] [Alexander 1978] [Ali and Crawford 1988] [Andaristiyan et al 2026] [Ascent Trajectory Analysis and 2022] [Aswathy et al 2013] [B. et al 2019] [Sperry Phoenix Co Az 1962] [Bach 2017] [Balesdent et al 2022] [Barret 1995] [Barret 1997] [Basil et al 2023] [Bastrygin and Trofimov 2017] [Bates and Young 2012] [Bellows et al 1984] [Benedikter et al 2021] [Benedikter et al 2022] [Benedikter et al 2025] [Benfriha et al 2026] [Berend and Talbot 2006] [Bhandari et al 2011] [Bickford and Gage 1991] [Bifurcation Analysis for the 2004] [Billet 1964] [Boglis and Stoica 2019] [Bonalli et al 2020] [Borelli and Carroll 1967] [Braun et al 2013] [Broglio 1961] [Buhl et al 1992] [Burkhardt and Schoettle 1996] [Butt et al 2009] [Calise et al 2000] [Calle et al 2010] [Casalino and Pastrone 1999] [Caton and Franke 1991] [Cau et al 2024] [Cauzza and Mockenhaupt 1973] [Cha et al 2020] [Chai et al 2020] [Chander and Krishna 2013] [Chang] [Cho et al 2021] [Cikanek 1986] [Civek and Özgören 2017] [Colasurdo et al 1995] [Coltrane and Suttles 1967] [Counter and Brinton 1975] [Cowling 2011] [Crose 1965] [Dai and Ray 1994] [Dai and Ray 1996] [Dalle et al] [Dalle et al 2023] [Das et al 2024] [Davis et al 2015] [Dennehy et al 2010] [Design of Rocket-Engine Control 1992] [Dhekane et al 1999] [Dhuyvetter 1974] [Diao et al 2022] [Dileep et al 2015] [Dileep et al 2016] [Dolbin et al 1967] [Dorairajan] [Drake 2004] [Draper 1963] [Draper et al 1959] [Dresia et al 2023] [Du and Wie 2009] [Dubanchet et al 2012] [Dukeman 2002] [Dukeman and Hill 2008] [Duncan 1958] [Dusek 1963] [Dworetzky and Edwards 1959] [Dziubanek 2012] [Eatough 1971] [Ebert and Manfletti 2026] [Edge and Powers 1974] [Edwards 1971] [Edwards et al 2015] [Elliott and Rau 1968] [Ellis and Kearney 1982] [Elston 1963] [Expendable second stage reusable 1971] [Experimental studies on thrust 1977] [Farrell 1968] [Feodosiev and Siniarev 1959] [Fernandez] [Figueiredo 2003] [Fitzgerald and Kampe 1979] [Forbes-Spyratos] [Forbes-Spyratos et al 2023] [Forliti and Diaz-Guardamino 2008] [Friddell and Franke 1990] [Fu et al 2021] [Fundamental Mechanisms of Combustion 1995] [Gao et al 2019] [Gath and Calise 1999] [Gath and Calise 2001] [Gea and Vicker] [Gee and Mathias 2008] [Gerdes et al 1969] [Gettatelli et al 2023] [Ghosh and Chattopadhyay 2014] [Ghosh and Chattopadhyay 2015] [Gilson et al 2023] [Goodstein et al 1982] [Gowan 2005] [Guo and Bai 2009] [Guo et al 2026] [Gusman et al 2011] [Haloulakos 1982] [Hamke et al 1992] [Hanford 1969] [Hardtla 1978] [Hardy 1969] [Hardy et al 1967] [He et al 2017] [He et al 2020] [He et al 2024] [Health monitoring and controls 1994] [Hoffman et al 2024] [Holt et al 2015] [Horneman] [Hui Li et al] [Hwang 2019] [Hwang et al 2003] [Inertial Guidance 1963] [Inertial guidance 1964] [Inertial Guidance 1993] [Inertial guidance sensors 1964] [Ingold 1983] [Inouye and Nottage 1966] [Intelligent hierarchical thrust vector 1994] [Ishibashi et al 1995] [Jaensch and Markl 1991] [Jang et al 2011] [Jha et al 2010] [Jha et al 2025] [Jia et al 2025] [Johnson 1975] [Joshi and Sudhir Kumar 2014] [Jung and Lee 2012] [Kalashnikov 2021] [Kalirajan and Joshi 2023] [Kamal 2008] [Kazarian et al 1973] [Ken Gee and Lawrence 2013] [Kerr et al 2010] [Kharisov et al 2008] [Kim 2016] [Kirby and Van Vooren 1964] [Knight and Quinn 1971] [Kosmann et al 1978] [Kumar V V and Beebi M 2015] [Lazić and Ristanović 2007] [Lee et al 2024] [LeFevre and Jha 2008] [LeFevre and Jha 2009] [Leitner 1986] [Leung and Calise 1992] [Levitt et al 1970] [Li et al 2010] [Li et al 2019] [Li et al 2021] [Li et al 2024] [Linsen et al 2022] [Lu 1996] [Lu and Pan 2009] [Lu et al 2002] [Lu et al 2013] [Luke 1991] [Luton 1963] [Lv et al 2023] [Ma et al 2012] [Ma et al 2022] [Ma et al 2024] [Maorui Zhang et al 2010] [Marchetti and Minisci 2021] [Marchetti and Minisci 2023] [Marchetti et al 2021] [Masyagin 2026] [Mattin 1968] [May 1986] [McCool et al 1980] [Merrill and Lorenzo 1988] [Millard and Reed 2014] [Milleman 1967] [Moody 1970] [Moody and Nakai 1965] [Morgado et al 2022] [Morris 2014] [Morris 2015] [Mueller 1959] [Mukundan et al 2019] [Mungas et al 2012] [Murugesan et al 2018] [Musgrave 1991] [Muthukumar et al 2020] [Najiya et al 2023] [Naftel and Powell 1993] [Negishi et al 2007] [Neilson et al 1968] [Newton and Spaid 1962] [Nguyen 1987] [Nguyen 1991] [Nocoń and Szmidt 2025] [Norman et al 1990] [Sperry Gyroscope Co Great Neck Ny 1963] [Oh et al 2008] [Orr and VanZwieten 2012] [Pan and Lu 2010] [Patera 2006] [Pei et al 2021] [Pitman and Trimmer 1962] [Platus 1975] [Platus 1980] [Platus 1980] [Platus 1994] [Pleasant 1978] [Poth and Elwell 1992] [Powell and Cruz 1991] [Powell et al 1990] [Powell et al 1991] [Powell et al 1991] [Prins et al 1992] [Punga and Campbell 1962] [Putnam and Braun 2014] [Putnam and Braun 2015] [Pérez Roca] [Qiuhong et al 2014] [Rafique 2022] [Ramesh 2004] [Randall 1970] [Reentry Maneuvering Vehicle Ascent 2025] [Reentry Trajectory Estimation 2024] [Review and progress of 2021] [Robust Optimal Trajectory Design 2022] [Roenneke and Cornwell 1992] [Roenneke and Well 1995] [Rogers 1965] [Roh and Kim 1999] [Roh and Kim 2002] [Romo and Alvarez 2010] [Rosenbaum 1970] [Rosenbaum 1971] [Roshanian et al 2019] [Ross et al 2003] [Roth] [Rynaski 1967] [Sai and Manideep 2023] [Saiki et al 2026] [Sathish et al 2025] [Schinstock et al 1998] [Schmidt 1992] [Schmidt and Velapoldi 1996] [Schmidt et al 1993] [Schoettle and Hillesheimer 1991] [Schroer 1966] [Sehgal and Wu 1964] [Sellers 1948] [Shahmirzaee Jeshvaghani et al 2015] [Shandor 1964] [Shandor and Walker 1962] [Sheth et al 2024] [Shi et al 2020] [Shorikov and Kalev 2019] [Shorikov and Kalev 2020] [Simmons and Hall 1973] [Solovyov and Korepanov 2025] [Soota and Nadda 2023] [Sopegno et al 2023] [Space transportation system solid 1979] [Sparks and Raney 2007] [Spencer and Bixler 1987] [Stancil 1963] [Stechman 1984] [Steffens et al 2015] [Stepp 2024] [Strelnikov et al 2022] [Stroud et al 2012] [Study of selected thrust 1965] [Su] [Su et al 2026] [Suchitra et al 2014] [Sun] [Sun et al 2024] [Talda and Franke 1989] [Tarrant and Crook 1996] [Taylor 2006] [Teofilatto 2024] [Theory of Error Compensation 1964] [Thompson and Pickett 1986] [Thrust vector control 2026] [Thrust vector control ground 1970] [Toelle et al 1973] [Trajectories of Solid Particles 1983] [Trotta et al 2021] [TVC Thrust Vector Control Actuator 2004] [VanZwieten et al 2014] [VanZwieten et al 2014] [Varghese et al 2021] [Villanueva 2022] [Vinod et al 2012] [Walsh et al 2012] [Walters 1967] [Wang 2015] [Wang and Song 2022] [Wang et al 2013] [Wang et al 2015] [Wang et al 2018] [Wang et al 2019] [Wang et al 2019] [Wang et al 2025] [Whorton et al 2007] [Wie et al 2008] [Winstead 1966] [Wittal et al 2025] [Woodberry 1975] [Xiao et al 2026] [Xing and Bainum 1996] [Xing et al 1997] [Xiong et al 2024] [Xiong et al 2025] [Xu 2022] [Xu and Zhang 2018] [Xu et al 2021] [Xu et al 2024] [Yaman and Seckin 2011] [Yao et al 2022] [Yezzi and Donguy 1986] [Yi et al 2019] [Yu et al 2023] [Yu et al 2024] [Zardashti and Rahimi 2020] [Zeamer 1975] [Zhai et al 2019] [Zhang] [Zhang 2023] [Zhang et al 2017] [Zhang et al 2019] [Zhang et al 2021] [Zhang et al 2022] [Zhang et al 2023] [Zhang et al 2025] [Zhang et al 2025] [Zheng et al 2020] [Zhou et al 2024] [Zimmermann et al 1996] [Zimpfer 1999] [Zinn et al 2005] [Öztürk et al 2026]
Launch vehicle design, programmes and operations, the residual
The residual, reported and not hidden. Launch-vehicle work that belongs to no heading above, including vehicle design and optimisation studies, programme overviews of the Saturn, Shuttle, Ares and smaller launchers, processing and ground operations, avionics and standards.
352 records. [A probabilistic approach to] [A probabilistic approach to 2006] [A quick look structural 1994] [Abbott and Matzenauer 1990] [Abraham 1963] [Abraham et al 1962] [Adetoro et al 2014] [Aggarwal 2007] [Ahmed 2012] [Albarado et al 2010] [Allen et al 2000] [An analysis of chemical 1965] [Anderson et al 2010] [Angel and Kiris 2019] [Anju et al 2017] [Arbocz 1997] [Arbocz 1998] [Ariane Launch Vehicle A 1977] [Armstrong 1964] [Azevedo and Buonomo 1999] [Azevedo et al 1996] [Azizi and Dornisch 2025] [Babcock and Wiltse 1965] [Bacchetti et al 2015] [Bacchus and Hendrix 1965] [Bahiman and Thole 1965] [Bailey 2020] [Balaji and Jerry Alexander 2015] [Balesdent et al 2011] [Bansal and Singh 2022] [Barad et al 2012] [Barth and Watson 2018] [Batts and Pearson 1996] [Baumgartner and Walker 1990] [Bayley et al 2007] [Bellanca et al 1964] [Bennich and Lindsey 1967] [Bialla and Hughes 1989] [Bieber 1966] [Bieber 1967] [Biggs et al 2011] [Biliaiev et al 2024] [Birbasov et al] [Blackwell 1966] [Blackwood et al 2015] [Blelloch et al 2000] [Blume 2010] [Boyd et al 2005] [Branets 2020] [Braukhane et al 2013] [Braun et al 1996] [Brevault] [Brevault and Balesdent 2021] [Brevault et al 2016] [Brevault et al 2017] [Brice et al 1966] [Bright 2000] [Brown and Littlefield 2010] [Buhler et al 2014] [Burkhalter and Sharpe 1990] [Buzzatto 2015] [Aerospace Corp El Segundo Ca 1963] [Cai and Xu 2015] [Calderon Hurtado et al 2026] [Carter 2011] [Cerneck 1982] [Chan and Brauckmann 2011] [Chandler 2019] [Chase 1980] [Chen et al 1977] [Cheuvront and Nguyen 2005] [Chew 1973] [Chien et al 2008] [Claggett and Langehough 1989] [Cobb and Davis 1994] [Cook 2006] [Cook 2006] [Cook and Vanhooser 2008] [Cox et al 2022] [Air Force Space Command Space Missile Sys Ctr 2014] [Cunningham and Higgins 1970] [Curlander and Kiefer 1965] [Da Cás 2021] [Dafler 1962] [Darwin et al 1989] [Davis and Coook 2006] [Davis and McArthur 2008] [Day and Harvell 1990] [Department Of Defense Washington Dc 1994] [Dees and Stockard 2023] [Deese et al 1991] [Delamata et al 2010] [Development of a large 1993] [Dineen 1966] [Dippolito and Stambolian 2011] [Dorrington 1987] [Driscoll 1967] [Dumbacher and Reuter 2007] [Edmunds 1988] [Ehrlich 1997] [Environmental testing of the 1968] [Ericsson and Guenther 1971] [Fang et al 2024] [Farish 1967] [Fayssal and Weldon 2008] [Feaux et al 1989] [Flittie and McFarlane 1991] [Foust and Smith 2004] [Fragola 2012] [Frei 1991] [French 2010] [Gibson 2019] [Gomez and Ma 1994] [Gomez Fernandez 2024] [Gong 2017] [Goodrum and Smolensky 1965] [Gray 2014] [Gray 2015] [Greene 1994] [Gregory and Wilcox 1970] [Griffiths et al 2016] [Grishko et al 2025] [Gülgönül and Sözbir 2018] [Hagar and Dornseif 2004] [Hanson and Beard 2010] [Hanson and Beard 2010] [Hao and Zhang 2021] [Harrington 2004] [Harrison et al 2009] [Harrison et al 2009] [Harsh 1989] [Al Hassan et al 2016] [Ermakov et al 2025] [Gerard 1966] [Golubek et al 2024] [Hattis 1981] [Hayward and Urdiales 2018] [Hegg 1964] [Highway to space 2006] [Hinckel 1995] [Horchler et al 2018] [Hou and Gramoll 1998] [Hsieh 1961] [Huang and Brown 1967] [Huangpeng et al 2022] [Huber 1964] [Hunley 2008] [Hunley 2008] [Hunley 2008] [Hunley 2008] [Iacoponi and Grisell] [Imamura et al 1994] [Interbartolo 2009] [ISAS’s New Launch Vehicle 1990] [Jackson and Johnson 1992] [Jasion 2009] [Jazra and Smart 2011] [Jensen 2000] [Jin 2025] [Jo and Yoo 2023] [Johnson 1994] [Jones and Rembert F. 1973] [Joseph et al 2024] [Kabe 1998] [Kawabe 1999] [Kawashima et al 2025] [Kelley 2012] [Kennedy 1970] [Kenny and Giacomoni 2016] [Kibbey 2015] [Kim 2019] [Kim et al 1990] [Kim et al 2025] [Kinnersley et al 2003] [Klemen 2015] [Kless and Aftosmis 2011] [Ko and Cho 2016] [Kobayashi et al 2001] [Konyukhov 2003] [Krishna et al 2019] [Krivenko 2026] [Kryuchkov 2020] [Kryuchkov 2020] [Kwak and Kiris 2012] [Kynard et al 2006] [Lai and Liu 2025] [Lancaster 1994] [Launch vehicle booster avionics 2000] [Launch Vehicle Financial Analysis 2022] [Launch vehicle optimization, phase 1965] [Launch vehicle optimization, phase 1965] [Launch Vehicle Performance 1963] [Launch Vehicle Stress Analysis 2022] [Launch Vehicle Systems] [Lauriente and Hoegy 1991] [Laursen 1994] [Laursen and Voce 1996] [Leckie and Hayman 1976] [Levine 1964] [Lewis and Rice 1992] [Liever and Habchi 2004] [Lim et al 2024] [Liquid Rocket Booster LRB 1989] [Liquid Rocket Booster LRB 1989] [Liquid Rocket Booster LRB 1989] [Liquid Rocket Booster LRB 1990] [Liquid Rocket Booster LRB 1990] [Liquid Rocket Booster Study 1989] [Liu 2017] [Liu et al 2009] [Lo et al 2014] [Longuski and Vinh 1980] [Losik 2010] [Lowe] [Lowrey 1962] [Madden 1970] [Maekawa 1996] [Mahon and Wild 1984] [Malik et al 2007] [Mao et al 2020] [Martin 2009] [Mathias et al 2008] [McArthur 2008] [McCaskill 1970] [McCurdy and Roche 2004] [McFarland et al 2011] [Martin Co Baltimore Md 1963] [Mescall 1963] [Miller 1963] [Minnetyan and Chamis 1999] [Mohan and Kishore 2021] [Moraes 2001] [Morovat et al 2019] [Moseley 1962] [Moser 1965] [Motiwala et al 2014] [Mueller 1964] [Nemeth and Starnes 1998] [Nettles 2009] [Neumaier et al 2025] [Niederstrasser 2022] [White Sands Missile Range Nm 1997] [Nola and Blue 2008] [Novykov et al 2015] [Oconnor 1966] [Oh et al 2018] [Packard and Zampino] [Palmer et al 1994] [Palmer et al 1996] [Pan et al 2014] [Panda et al 2011] [Parkinson 1991] [Patel 2013] [Phillips et al 2007] [Pope 1992] [Poth et al 1993] [Powell and Scholl 1966] [Pritts 1974] [Qi 2017] [Qi et al 2024] [Qiang Wu and Wei Wang 2016] [Rader and Berry 1979] [Ralph 1965] [Rasky 1998] [Reins and Alvis 1972] [Reuter et al 2006] [Rice 1970] [Richter and Russell 2007] [Rivord and Williams 2024] [Robertson] [Rojahn and Ruf 2011] [Rothschild and Talay 2009] [Rothschild et al 2005] [Rothschild et al 2005] [Rothschild et al 2010] [Runkel 1964] [Ryan and Verderaime 1993] [Sabaghzadeh and Khansari 2022] [Saju et al 2025] [Safie and Maggio 2010] [Sanders 1963] [Saturn 5 Launch Vehicle 1971] [Saturn 5 Launch Vehicle 1973] [Schieb 2006] [Sekula et al 2012] [Sellers 2011] [Shibato 1995] [Sholes et al 1994] [Simon et al 2006] [Singh et al 2024] [Siva Krishna Reddy and Shah 2021] [Skopinsky 1997] [Slotnick et al 1994] [Smith 1966] [Snoddy et al 2006] [Snoddy et al 2006] [Solazzi and Ferreira 2026] [Sowiński and Jasion 2019] [Space Launch Vehicle Structures 2022] [Spacely’s rockets Personnel launch 1991] [Spiegel and Wolf 1966] [Spiegel and Wolf 1967] [Springer 1994] [Steffens and Mavris 2015] [Steinmeyer and Frick 2015] [Sterett 1962] [Stevens et al 1995] [Stoecker et al 1992] [Strobl et al 2012] [Suryanarayana and Sivaramakrishnan 2023] [Surzhikov 1999] [Szedula 1996] [Tamura et al 2023] [Tarabini et al 2013] [Taylor et al 2006] [The air-breathing launch vehicle 1970] [Thorp and Kapel 2006] [Threet et al 2011] [Titov 2017] [Tobias and Hawkins 2005] [Tong and Fen 2016] [Torisaka and Yamakawa 2008] [Trevino et al 2015] [Vehko and Ruhland 1966] [Verhage 2007] [Verstraete and Hendrick 2003] [Villanueva 2022] [Volpi et al 2012] [Wah et al 1963] [Wang and Wang 2010] [Wang et al 2024] [Wang et al 2025] [Ward 2015] [Webb 1967] [Wente 1982] [Wickham 1964] [Williams and Cannon 2006] [Wong et al 1982] [Woo et al 1994] [Wu] [Wu and Le 2025] [Wunderlin et al 2018] [Xu et al 2020] [Yeniay et al 2006] [Young 2025] [Yunis 2005] [Zafar and LinShu 2010] [Zakeri et al 2017] [Zhang et al 2018] [Zhao et al 2003] [Zhou and Wang 2011] [Ziegler 1963]
Staging, mass fraction, cost and the launcher line
The argument the Atlas won and then lost. Staging and stage optimisation, single-stage-to-orbit studies, launch cost, expendable launcher evolution and reuse. 89 titles concern reuse and 45 single stage to orbit, which is the configuration the stage-and-a-half arrangement approached and stopped short of.
294 records. [Abdulmajeed et al 1984] [Adkins 1970] [Aggarwal 2018] [Akhtar and He Linshu 2005] [Akhtar and Linshu 2006] [Akhtar and Linshu 2006] [Akhtar et al 2008] [Allen et al 1994] [Alvord et al 2024] [Andrews et al 1992] [Arockiam et al 2012] [Arockiam et al 2012] [Assessment of Candidate Expendable 1984] [Bainum and Reiss 1995] [Bainum et al 1996] [Balesdent et al 2010] [Balesdent et al 2012] [Baumgartner 1997] [Bayer 2003] [Beers et al 2013] [Bell et al 1964] [Bentley 2009] [Berglund 2003] [Berglund and Wilkins 2003] [Berglund et al 2005] [Bleviss 1976] [Breton et al 2006] [Brevault et al 2020] [Brinton et al 1994] [Browning 1993] [Builder 1959] [Burrows and Roth 1992] [Butrica 2003] [Buursink 1998] [Buzzatto 2006] [Calhoon 1996] [Castellini et al 2011] [Chase 1978] [Chase 1979] [Chase 1990] [Chase 1992] [Chase and McKinney 2005] [Chen et al 2025] [Chiesa et al 2005] [Christie 2026] [Coleman 2000] [Conger et al 2002] [Cook 1995] [Cook 1996] [Crocker and Greene 2017] [Crocker et al 2015] [Air Force Space Command Space Missile Sys Ctr 2013] [Brevault et al 2020] [Burghes 1974] [Cusick and Kontis 2019] [Dahlem et al 1991] [Dalle and Rogers 2015] [Dalle et al 2016] [Daniel and Ramusat 2005] [Davis 1988] [De Luca et al 2026] [Degelsmith et al 1993] [Deneu and Terrenoire 1996] [Der Kiureghian 2001] [Deschamps 1985] [Dissel et al 2005] [Donahue 2000] [Dorrington 1990] [Dorrington 1999] [Du et al 2025] [Dumbacher and Klevatt 1994] [Dupnick et al 1984] [Dupont et al 2017] [Eckmann et al 1997] [Effect of design parameters 2018] [Eramya et al 2007] [Evolved Expendable Launch Vehicle 2004] [Ewig et al 2000] [Expendable Launch Vehicles for 1977] [Ferrandon 1997] [Ferrandon 1998] [Fitzsimmons 1996] [Fleming et al 2009] [Fossum 1984] [Fox and Glass] [Freeman et al 1995] [Freeman et al 1996] [French 1987] [Fritz and Sackheim 1982] [Garvey et al 2003] [Gea et al 2000] [Geckler 1960] [Gilbert et al 2016] [Goldsborough 2005] [Gong et al 2022] [Goodwin and Wegner 2001] [Goyal et al 2022] [Gray and Alexander 1965] [Gstattenbauer et al 2006] [Guadagnini et al 2023] [Gujral and Emdee 2016] [Gunn 1973] [Gunn 1976] [Hagopian 2002] [Hamaker 1996] [Hames 1992] [Hardy et al 1993] [Hauer et al 1963] [Heiser 2010] [Hellman 2006] [Herrmann and Akin 2005] [Heuston et al 1967] [Holguin and Labbee 1988] [Hong et al 2005] [Hosseini et al 2011] [Hubbel 2000] [Hudson 1987] [Hudson 2005] [Hudson and Hunter 1987] [Hudson et al 1981] [Hunt 1995] [Hutchison 2011] [Jo and Ahn 2021] [Jo and Ahn 2022] [Johnson 1990] [Keith 1995] [Kempinski and Teague 1988] [Kibbey 2019] [Kim et al 2026] [Knapp 1999] [Knaur 1966] [Ko et al 2006] [Ko et al 2007] [Koelle 1981] [Koelle 1984] [Koelle 1986] [Koelle 1990] [Koelle 1992] [Koelle 1992] [Koelle 1998] [Koelle 1999] [Koelle and Voss 1964] [Koenigsmann and Shotwell 2006] [Kohani et al 2021] [Kohrs and Petersen 1998] [Koon and Greene 2002] [Krieger 1990] [Kruse et al 2023] [Kurian et al 2025] [Kutter 2006] [Kuzin et al 2009] [Lafleur et al 2012] [Lakshminarayana and Chiarelli 2022] [Larsen 2000] [Larsen 2003] [Larsen 2005] [Latimer 2009] [Launch Vehicle Performance and 2022] [Layachi et al 2025] [Lee 1991] [Lee et al 1997] [Lee et al 2026] [Letchworth 2011] [Letchworth and Letchworth 2000] [Lewak 1967] [Li et al 2014] [Li et al 2016] [Liao et al 2023] [Lockheed Martin Skunk Works 1999] [Logsdon and Williamson 1997] [Lohrer and Wright 2016] [Low-cost expendable launch vehicles 1992] [Low-Cost Satellites and Satellite 1990] [Marshall 1984] [Martin 1973] [Martin et al 1991] [Martinovic and Cerro 2002] [Matlock et al 2001] [May and Lyles 2015] [Mayhew and Norden 1995] [Maynard 1969] [McClure 1998] [McClure and Andrews 1998] [Merrifield 1972] [Meyerson 1998] [Mihara 1988] [Milliken 1963] [Molina et al 2009] [Molinari et al 2024] [Monk et al 2012] [Motes 2016] [Naftel et al 1986] [Nair and Kukreja 2025] [Najam 2014] [Nath De 2012] [Nettles and Jackson 2009] [Noneman 2002] [Obermann and Williamson 1998] [Olds 1988] [Olds and Bellini 1998] [Olds and Lee 1996] [Venkataramana et al 2023] [Palen 1994] [Pamadi et al 2004] [Pamadi et al 2006] [Park et al 1995] [Parkyn 1958] [Pempie 2003] [Peters et al 2006] [Plaisted and Leonessa 2008] [Portz 2004] [Puening 1990] [Qazi and Linshu 2006] [Qu et al 2004] [Ragab and Cheatwood 2015] [Ragsac and Patterson 1961] [Rasky et al 2006] [Reed et al 2016] [Reusable Launch Vehicle 1995] [Reusable launch vehicle development 1995] [Roberts et al 2002] [Robinson et al 2003] [Rohrschneider and Olds 2001] [Romano et al 2024] [Rooney 2003] [Ross 1969] [Rutledge 1993] [Sackheim and Gavitt 1999] [Sarzi-Amade et al 2016] [Scarborough 1964] [Scherer 1986] [Schurmann 1957] [Schutte and Thoreau 2016] [Seo and Kim 2026] [Sgarlata and Weegar 1992] [Shirasu et al 1996] [Shulga and Shcheglov 2021] [Siebenhaar et al 1994] [Silberman 1983] [Single stage to orbit 1994] [Sloan 1995] [Smith 1984] [Smith 2011] [Spencer 1999] [Sponable 1995] [Staniszewski 2001] [Stanley and Powell 1990] [Stanley et al 1991] [Star-Raker - An airbreather/rocket-powered 1979] [Stephan and Schneider 1991] [Stockinger et al 2005] [Szatkowski and Levin 1991] [Szatkowski and Schultz 1988] [Tartabini et al 2000] [Tharratt 1975] [Thomas et al 2002] [Thorpe 1991] [Toten et al 1991] [Trefny 1999] [Trevino et al 2016] [Trifa et al 2023] [U.S. Access to Space 1990] [Urie and Elvin 1995] [Urschel and Cox 2003] [Usmonov and Kretov 2020] [Verstraete et al 2009] [Walker 2025] [Walter 2018] [Walter 2024] [Wangu and Mouyos 1998] [Waters 2013] [Watson et al 2014] [Wells et al 1999] [Wertheimer 1957] [Whitehead 1990] [Whitehead 2000] [Wilhite 1982] [Wilhite 1983] [Wilhite and Fischer 2009] [Wilhite et al 1991] [Wilken 2024] [Williams et al 2015] [Wolf 2000] [Wu and Zhang 2023] [Xu et al 2025] [Yang 2020] [Yarymovych and Mark 2003] [Yarymovych and Mark 2006] [Yunis and Ludwiczak 2007] [Zeeshan et al 2021] [Zhang et al 2016] [Zhou et al 2015] [Zipay 2004] [Zubrin and Clapp 1996]
The ballistic missile programmes and their history
The weapon class the Atlas founded. The Titan, Thor, Minuteman, Peacekeeper and fleet ballistic missile programmes, their basing, inertial guidance and range work, and the histories of the missile gap and the strategic missile build-up. 39 titles name the Minuteman and 31 the Titan, against 2 for the Thor, and the cluster’s median publication year is 1987.
258 records. [Aerojet-General Corp Sacramento Ca 1966] [Alexander 2024] [Alexander et al 1993] [Allen 1955] [Allen 1957] [Allen and Eggers 1958] [Aloise and Snarr 1993] [Alonis 1988] [Altfeld 1989] [Anderl 1985] [Anderson 1976] [Andre and Czaja 1982] [Andre and Czaja 1983] [Application of Conversion ICBM 2004] [Arthur and Kemp 2025] [Atkinson et al 2007] [Bacon 1985] [Baetz 1974] [Ball 1980] [Ballistic Missile and Space 1960] [Ballistic missile flight testing 1981] [Ballistic Missile Fundamentals How 2006] [Barkley and Hietzke 1982] [Bartone et al 2001] [Bartone et al 2002] [Bauer and Flint 2013] [Becka et al 2008] [Bellero 1963] [Benedict 2015] [Bennett 1976] [Blanco 2020] [Bolt 1981] [Botterill 1961] [Bowman and Savin 1959] [Boyd 1963] [Bracha 1961] [Brooks 1961] [Brower 2004] [Brower 2006] [Burnett 1975] [Bużantowicz 2015] [Ballistic Missile Office Norton Afb Ca 1986] [Aerojet Strategic Propulsion Co Sacramento Ca 1987] [Cahill 1976] [Callaghan 1958] [Cantrell and Gibson 1973] [Chambers and Preusser 1962] [Chianese 1965] [Coffee and Maganty 1996] [Collins and Miller 1962] [Compilation of shock, vibration 1965] [Completing the Kennedy-McNamara Strategic 1980] [Completing the Kennedy-McNamara Strategic 2024] [Cong-cong et al 2017] [Cooper 1961] [Cooper and Smith 1993] [Covington 1966] [Cuk 2008] [Daniels et al 1975] [Daniels et al 1975] [Day 1980] [Bureau Of Naval Weapons Washington Dc 1962] [Bureau Of Naval Weapons Washington Dc 1963] [Defense Science Board Washington Dc 1986] [Department Of The Air Force Washington Dc 1986] [Department Of The Air Force Washington Dc 1986] [Department Of The Air Force Washington Dc 1986] [Department Of The Air Force Washington Dc 1986] [Department Of The Air Force Washington Dc 1986] [Defense Budgets and the 2019] [Deutch 1989] [Diamant 1965] [Divakaruni et al 2008] [Dougald 1963] [Douglass 2014] [Dunn 1997] [Edenburn and Trost 2000] [Eggers 1958] [Ehrsam et al 1978] [Eisenhower and the Missile 2019] [Enscore and Stupich 2016] [Enscore et al 2008] [Escobal 1964] [Esther et al 2012] [Esther et al 2013] [Evolution of the Minuteman 2021] [Fall et al 2008] [Fatal Accidents in the 2002] [Ficarrotta 2001] [First rocket launch from 2008] [Air Force Armament Lab Eglin Afb Fl 1988] [Ford 1983] [Franklin and Kunz 1973] [French 1991] [Friedman and Reed 1964] [Gadalla et al 1993] [Garcia et al 2025] [Garland and Hall 1958] [Gearhart 1962] [Gielda et al 1991] [Gillespie 1956] [Goldberg 1967] [Goswami 2026] [Goswami 2026] [Graham 1958] [Guo et al 2018] [Hamaker 1960] [Hanson 1963] [Hanson and Stapyer 1963] [Harvey et al 1989] [Hendershot 1971] [Heterogeneous engineering and the 1994] [Hicks 1987] [Hobson 1991] [Hough 1982] [Hunley 2008] [Hunley 2008] [Hunley 2008] [ICBM deep basing construction 1987] [Imoto 2016] [Inglis 1964] [Jianbin et al 2005] [Johnson 1973] [Kaplan et al 1962] [Kashiwagi 1968] [Kelly 1959] [Kleinhesselink 1963] [Korolev and the First] [Kościelniak 2015] [Kumpel et al 2002] [Land-mobile ICBM 1983] [Laqueur 2017] [Larsen and Larsen 1997] [Larson 1965] [Ledbetter 1960] [Leger 1975] [Lenihan 1962] [Lenihan 1962] [Levin 1963] [Li et al 2022] [Liang and Kleinbub 1973] [Liberto 1961] [Lin 2003] [Lindsay and Fikes 1976] [Lum and Lyons 1966] [MacPherson 1963] [Maitra 2000] [Makar 1962] [Manning the Titan II 2002] [Matticks 1974] [Matzko 2000] [McKinley 1975] [Metcalf 1976] [Minyaev 2024] [Missile Gap 2025] [Modernizing the U.S. Nuclear 2022] [Murphy et al 2000] [Nettle 1958] [Newgent 1966] [Nielsen 1955] [Nielsen 1966] [Hercules Powder Co Kenvil Nj 1963] [Norris and Kristensen 2009] [O’Rourke 2010] [Oh and Kang 2022] [Ohman 1967] [Optimal Replacement Policies for 1962] [Ostner 1962] [Pelensky 1976] [Pettyjohn 2006] [Plymale 1974] [Poehler 1961] [Randorf 2000] [Rauch 1957] [Raymond and Kendall 2019] [Reams et al 1983] [Redman and Pasiuk 1957] [Revising the Eisenhower Strategic 1980] [Revising the Eisenhower Strategic 2024] [Rhee et al 2013] [Rockefeller and Alfred 1960] [Roman 2019] [Rong et al 2016] [Rounds and Marmar 1983] [Russell 1964] [Sagdeev et al 2002] [Schaff et al 2000] [Schoneman et al 2000] [Schoneman et al 2003] [Schriever 1960] [Schuiling and O’Connor 1998] [Schwartz 1987] [Selected Ballistic Missile Programs 2008] [Semiconductor device reliability evaluation 1967] [Shafer and Brock 2012] [Shafer and Brock 2013] [Sladen 1963] [Slifka 1960] [Slivinsky et al 2002] [Soviet Ballistic Missile Ground 1964] [Stodghill et al 1999] [Strategic Force Planning during 2019] [Strickler 1981] [Stubbs et al 1997] [Stumpf 2002] [Tao et al 2001] [Tedrick 1962] [The AIR Force and 2021] [The Air Force approach 1963] [The AIR Force Strategic 2002] [The Ballistic Missile Context 2008] [The END of the 2002] [The Fiscal Year 1963 1980] [The future of US 1986] [The Kennedy Administration and 1980] [The Kennedy Administration and 2024] [The Titan II 2022] [The US Fleet Ballistic 1994] [Thermonuclear and Ballistic Missile 2013] [Thompson 1980] [Titan II in Context 2002] [Titan II Launch Complex 2002] [Titan II Operational Flight 2002] [Titan II Research and 2002] [Mozhaisky Military Space Academy and Tolochko 2024] [Topping 1981] [Triwush 1959] [Troutman and Isakowitz 1987] [Truncale 1991] [Tsutsumi et al 2012] [Tsutsumi et al 2014] [Ulsperger 2022] [Villanueva and Abbas 2015] [Boeing Co Seattle Wa 1943] [Boeing Co Seattle Wa 1963] [General Dynamics Corp Pomona Ca Pomona Div 1963] [Hall 2019] [Philippe and Stepanov 2023] [Walsh and Wartburg 1978] [Warmbrod 1963] [Wayte and Gruenich 1972] [Weiss 1966] [Wheelon 1959] [Whitcombe 1961] [Whitehead 1992] [Williamson 2016] [Wong and Cho 1985] [Woodbury and Gorman 1983] [Wu et al 2015] [Xie et al 2015] [Yang et al 2011] [Yau et al 1995] [Zaloga 1990] [Zhang et al 2014] [Zheng et al 2020] [Zhou et al 2018] [Zhou et al 2020] [Zimmerman 1988]
Ground winds, buffet and ascent aerodynamic loads
The load cases of the vehicle on the pad and in the first two minutes. Ground-wind loads, transonic buffet, gusts, load relief and stage-separation aerodynamics. 33 titles name ground winds and 20 load relief or load alleviation.
273 records. [Adelfang 2003] [Adelfang 2004] [Adelfang et al 1993] [Adelfang et al 1994] [Albertson et al 2012] [Allen 1966] [Alter et al 2015] [Applebaum et al 2011] [Applebaum et al 2012] [Appleby et al 1966] [Armand] [Atesmen 2023] [Azevedo 1987] [Azodi et al 2022] [Bakeman 1962] [Baran et al 2013] [Barbera 1980] [Barbre et al 2019] [Bartels et al 2010] [Bartels et al 2012] [Beer and Lennox 1965] [Bettis and Hosder 2010] [Bidwell 1967] [Binion 1964] [Binion et al 1962] [Blanchet and Bartos 2001] [Blanchet et al 2001] [Blelloch and Coe 2000] [Blelloch et al 1999] [Bodle and Hackley 1975] [Boelitz et al 2003] [Boggs 2004] [Bohne 1964] [Bordelon et al 2003] [Brown 2022] [Buell 1964] [Buell 1964] [Buell 1966] [Bushnell 1989] [Butler et al 1992] [Camarda et al 2011] [Cappellucci and Schinnerer 1986] [Capri et al 2006] [Cavallini et al 2016] [Chapter 12 Methodology of 2013] [Chapter 13 Numerical Modeling 2013] [Chinnathambi et al 2025] [Christensen and Brunty 1996] [Chudej 1996] [Chung and Peebles 2004] [Coe and Brownson 1981] [Coffin 1970] [Cole and Henning 1991] [Cole and Henning 1992] [Collins et al] [Collins et al 2023] [Colonno and Alonso 2008] [McCullough and Steinmetz 1965] [D’Antuono et al 2024] [Dabas et al 2025] [Della Monica and Bernardini 2024] [Demory et al 2011] [Deng et al 2027] [Dhuyvetter and Lam 1989] [Doggett and Hanson 1962] [Doggett and Hanson 1963] [Dotson 2001] [Dotson and Tiwari 1996] [Dwivedi and Bhargava 2018] [Dynamic loads analysis of 2024] [Dąbrowski and Dąbrowski 2019] [Eliseev et al 2014] [Erickson 2010] [Erickson and Deloach 2008] [Ericsson and Pavish 1999] [Ericsson and Pavish 2000] [Ericsson et al 1973] [Eshete et al 2024] [Estimating the Mass of 2015] [Eyi and Yumusak 2013] [Farmer and Jones 1966] [Ferragut 1976] [Fong et al 1970] [Foughner et al 1971] [Fujino et al 2008] [Gaglio et al 2026] [Garbeff et al 2019] [Goyal et al] [Graham and Luz 1998] [Greene et al 1990] [Griffin et al 1999] [Griffin et al 2000] [Hamilton et al 1983] [Hanson and Jones 1963] [He et al 2024] [Heaney et al 2021] [Hegedus and Mendenhall 2003] [Hetcher 1966] [Holland and Shaw] [Hough 1980] [Hrinda 2009] [Huang et al 2025] [Huebner et al 2006] [Ivanco 2016] [Ivanco and Keller 2012] [Ivanco and Keller 2014] [Ivanco et al] [Ivanco et al 2020] [Ivanco et al 2021] [Ivanco et al 2024] [Iyer 2026] [Jayan et al 2024] [Jayanthi and Jain 2019] [Jee et al 2016] [Jeon et al 2012] [Jeyakumar et al 2005] [Jia et al 2020] [Johnson and Braddock 1974] [Johnson and Vaughan 2020] [Johnson et al 2005] [Johnson et al 2006] [Jones and Farmer 1966] [Jones and Farmer 1967] [Kabe 2000] [Keller and Ivanco 2010] [Khil’chevskii and Kadyshev 1973] [Klenk 1964] [Ko et al 2019] [Kondratiev 2019] [Kryvoruka and Ashurst 1973] [Kumar et al 1994] [Kumar et al 1995] [Kumar et al 1998] [Kumar et al 2023] [Kurudimath et al 2026] [Lee et al] [Lee et al 2024] [Lei et al 2014] [Lei et al 2026] [Leopardi et al 2025] [Lester and Morgan 1964] [Lester and Morgan 1965] [Lester and Tolefson 1964] [Liao et al 2023] [Liu 2012] [Macheske et al 1993] [Malmuth and Fedorov 2008] [Malmuth et al 2005] [Mancini et al 2025] [Marcum et al 1965] [Martin et al 1993] [Massey and Chwalowski 2010] [Mayers et al 2009] [Meadows 1963] [Meckler 1965] [Mehta 2015] [Mehta 2016] [Moody et al 1982] [Mooij 2020] [Morgan and Collins 1962] [Morgan and Collins 1963] [Murashkin et al 2020] [Murphy and Rubesin 1965] [Meeting on Ground Wind 1966] [Mehta 2022] [Naftel and Powell 1990] [Nallasamy et al 2008] [Nandakumar et al 2019] [Nandakumar et al 2019] [Neice 1954] [Nelson et al 2005] [Nix 1959] [Ogasawara and Nishioka 2001] [Oh et al 2017] [Ohshima and Sugiyama 2002] [Omar and Bevilacqua 2017] [Orr 2010] [Orr and Russell] [Orr and Russell 2024] [Pamadi et al 2004] [Pamadi et al 2005] [Pamadi et al 2007] [Pamadi et al 2009] [Park 1998] [Piatak and Sekula 2019] [Piatak et al 2010] [Piatak et al 2012] [Piatak et al 2015] [Piatak et al 2016] [Pinier] [Pinier 2011] [Pinier 2024] [Pinier et al 2015] [Prabhakar and Quinn 1994] [Prelaunch Ground Wind Loads 1965] [Qaumi 2021] [Ragab 1992] [Rainey 1964] [Rajarajan et al 2026] [Reed 1970] [Reisenthel et al 2007] [Roberts et al 2009] [Rogers et al 2015] [Roozeboom et al] [Roshanian and Talebi 2008] [Sai Naga Bharghava et al 2024] [Sanford et al 2003] [Schindel et al 1966] [Schwarz 2010] [Sekula et al 2016] [Sellers et al 2017] [Seywald and Bless 1993] [Shaw-Lecerf et al] [Shi 2005] [Shiihara et al 2018] [Shivananda et al 2001] [Simon 1965] [Simons 1975] [Sinclair and Flowers 2010] [Singaravelu et al 2009] [Snodgrass 1955] [Solanyk 1993] [Song et al 2020] [Song et al 2022] [Song et al 2026] [Soranna et al 2023] [Spearman 1984] [Spiekermann and Kabe 1998] [Springer 1996] [Springer and Pokora 1994] [Springer and Pokora 1994] [Srivastava et al 2010] [Stepp 2024] [Stetson and Lewis 1977] [Stouffer] [Sun 2020] [Sun 2020] [Sun et al 2023] [Suttles 1964] [Suzuki 2004] [Tan et al 2024] [Tashakkor et al 2011] [Tewell and Buell 1985] [Tong 1991] [Toniolo et al 2008] [Trout et al 2009] [Vieweg 1972] [Vîlceanu et al 2024] [Walterscheid and Sako 2011] [Wang 2004] [Wang 2004] [Wang and Chen 2022] [Wang and Ting 1961] [Wang and Wang 1997] [Wang et al 2014] [Wang et al 2018] [Wang et al 2024] [Wang et al 2026] [Wang et al 2026] [Wehmueller and Hauser 1991] [Weilmuenster et al 1995] [Wignall et al] [Wignall et al 2023] [Williamson 1978] [Winchell 1992] [Winnick 1996] [Yan et al 2025] [Yang et al 2015] [Young and Rankin 1996] [Zhang 1992] [Zhang et al 2023] [Zhang et al 2024] [Zhou et al 2025]
Propellant slosh
The free surface the balloon tank cannot break up. Lateral and longitudinal slosh, equivalent mechanical models, low-gravity behaviour and baffle design. 105 of its 279 records name a baffle and 87 name a propellant, launch vehicle, rocket or spacecraft, and the median publication year of 2017 is the most recent of any cluster, so the baffle is still the answer being refined.
279 records. [Abdollahzadeh Jamalabadi 2019] [Abramson 1965] [Abramson and Silverman 1966] [Abramson et al 1961] [Abramson et al 1962] [Abramson et al 1962] [Abramson et al 1963] [Abramson et al 1966] [Adler et al 1991] [Agui and Moder 2015] [Aguiar et al 2025] [Ahizi et al 2025] [Akyıldız et al 2013] [Al-Yacouby and Ahmed 2022] [An Equivalent Propellant Sloshing 2018] [Anderson] [Arasan and Tiwari 2026] [Atthariq et al 2021] [aus der Wiesche 2008] [Baghel and Shinde 2017] [Basurto et al 1966] [Bauer 1963] [Bauer 1963] [Bauer 1963] [Bauer 1963] [Bauer 1964] [Bauer 1966] [Bauer 1967] [Beckman et al 2018] [Benmasaoud et al 2025] [Benson and Mason 2011] [Bhandiwad and Dodamani 2025] [Bhandiwad and Dodamani 2026] [Bhandiwad et al 2023] [Bhuta and Koval 1963] [Bhuta and Koval 1964] [Biswal and Bhattacharyya 2010] [Borg 2019] [Brodnick et al 2015] [Brodnick et al 2016] [Buchanan 1965] [Buchanan and Shih 1971] [Bynum and Hamlet 1965] [Cao et al 2023] [Caron et al 2018] [Celebi and Akyildiz 2002] [CFD Analysis of Sloshing 2017] [Chandler and Fontenot 1970] [Chandler and Lomen 1970] [Chang et al 2025] [Chen et al 2026] [Chintalapati and Kirk 2008] [Chintalapati et al 2010] [Cho 2018] [Cho 2021] [Cho and Han 2025] [Cho and Kim 2016] [Choudhary et al 2021] [Choudhury et al 2026] [Christensen et al 1997] [Chu 1962] [Chu 1969] [Cimini et al 2023] [Clark and Fontenot 1966] [Cole 1966] [Cossette et al 2020] [Demir et al 2021] [Demirel and Aral 2018] [Dennehy et al 2022] [Dodge 1970] [Dodge 1971] [Dodge and Garza 1969] [Dodge and Garza 1969] [Dodge and Garza 1970] [Dong et al 2025] [Duan et al 2021] [Dynamics of liquid sloshing 2005] [Eggleston 1968] [Eulitz 1964] [Evensen and Raney 1969] [Experimental results of hydrogen 1994] [Feng and Grady 1969] [Feng et al 2010] [Feng et al 2020] [Feng et al 2025] [Fleischer and McGlinchey 1971] [Fogel et al 2023] [Freeman 2024] [Furuichi and Tagawa 2020] [Garza 1966] [Gavrilyuk et al 2000] [George and Cho 2020] [Gnitko et al 2017] [Golla and Venkatesham 2021] [González et al 2026] [Gradinscak and Jafar 2013] [Green et al 2007] [Green et al 2010] [Guo et al 2024] [Gurusamy and Kumar 2021] [Han et al 2021] [Hari and Sarigul-Klijn 2019] [Hasheminejad et al 2014] [Hastings and Toole 1968] [Hauser et al] [He et al 2007] [He et al 2025] [He et al 2026] [Himeno 2003] [Himeno et al 2003] [Himeno et al 2005] [Hoffman et al] [Hopfinger and Baumbach 2009] [Huang 2023] [Hurwitz and Melcher 1968] [Hwang 1965] [Ikeda and Ibrahim 2005] [Ikeda and Murakami 1999] [Iranmanesh and Nikbakhti 2021] [Jamalabadi et al 2018] [Jeon et al 2024] [Jeong and Kim 2021] [Jiang and Le 2026] [Jin et al 2022] [Joseph et al 2025] [Joshi et al 2017] [Jäger 2019] [Jäger 2019] [Kannapel et al 1987] [Kannapel et al 1987] [Ketchum 1970] [Kim 2011] [Kim and Kim 2023] [Kim and Park 2026] [Kim and West 2011] [Kingsley and Craig 2004] [Korkmaz 2023] [Kotrasova 2014] [Kotrasova and Kormaníková 2014] [Kovalev and Chenyu 2024] [Lance 1966] [Langner 1963] [Lestingi and Zavesky 1978] [Liao et al 2025] [Lin and Song 2019] [Liu and Li 2018] [Liu and Lin 2009] [Liu and Lu 2023] [Liu and Zhang 2016] [Liu et al 2017] [Liu et al 2019] [Liu et al 2019] [Liu et al 2025] [Liu et al 2026] [Lomen 1964] [Lomen 1965] [Lomen 1965] [Lu and Cao 2025] [Lu and Cao 2025] [Lu and Cao 2026] [Lu et al 2015] [Lu et al 2024] [Lu et al 2024] [Lukovsky et al 2012] [Luo 2026] [Lv et al 2024] [Ma et al 2023] [Ma et al 2026] [Majumdar et al 2026] [Marques et al 2025] [Marsell et al 2009] [Michihara et al 2018] [Miles 1958] [Momin et al 2024] [Mooij and Gransden 2019] [Mooij and Wang 2021] [Mooij and Wang 2023] [Navickas and Cheng 1990] [Neer and Salvatore 1972] [Ng and Benson 2017] [Noui et al 2024] [Novel Design of a 2023] [Oliveira da Mata et al 2019] [Orr] [Orr et al 2015] [Pan et al 2026] [Paprota 2023] [Park et al 2024] [Park et al 2025] [Pei 2021] [Pei and Rothhaar 2015] [Perez et al 2012] [Poguluri and Cho 2023] [Pramod et al 2025] [Qin et al 2019] [Qu et al 2023] [Ren and Zhong 2024] [Ren et al 2023] [Roithmayr and Pei 2024] [Ross and Womack 1973] [Rubio Hervas and Reyhanoglu 2012] [Rubio Hervas and Reyhanoglu 2014] [S 2022] [Sances et al 2010] [Saugen and Adler 1991] [Scholl et al 1971] [Schwind et al 1964] [Schwind et al 1966] [Schwind et al 1967] [Shamsoddini and Abolpur 2019] [Shao et al 2015] [Shi 1987] [Silveri and Romero-Calvo 2026] [Silverman and Abramson 1966] [Singh et al 2022] [Sloshing Analysis of a 2020] [Solodun 2025] [Solomon and Tamiru 2026] [Stephens 1965] [Storey et al 2015] [Strahan and Hernandez 2011] [Sumner 1964] [Sumner 1965] [Sun et al 2020] [Sun et al 2021] [Suzuki 2001] [Sávio Aguiar et al 2022] [Takahara and Kimura 2012] [Tang 1995] [Tang and Chang 1993] [Tang et al 2013] [Tegart et al 1981] [Thirunavukkarasu and Rajagopal 2021] [Tiwari et al 2021] [Trimulyono et al 2022] [Tsao and Kinnas 2021] [Van Zwieten et al 2020] [Wang et al 2012] [Wang et al 2013] [Wang et al 2016] [Wang et al 2016] [Wang et al 2016] [Wang et al 2017] [Wang et al 2018] [Wang et al 2019] [Wang et al 2019] [Wang et al 2022] [Wang et al 2025] [Wang et al 2026] [Wang et al 2026] [Warner and Caldwell 1961] [Wei and Zhang 2020] [Westra et al] [Wilner et al 1960] [Wohlen et al 1975] [Xu and Xu 2024] [Xue et al 2012] [Xue et al 2025] [Xue et al 2026] [Yan and Yu 2011] [Yang 2012] [Yang and Peugeot 2010] [Yang and Peugeot 2011] [Yang and Williams] [Yang and Williams 2024] [Yu et al 2007] [Yu et al 2020] [Yu et al 2020] [Yu et al 2026] [Yue et al 1996] [Zang et al 2019] [Zang et al 2019] [Zhang et al 2024] [Zhang et al 2026] [Zhang et al 2026] [Zhao et al 2024] [Zhao et al 2026] [Zhou et al 2023] [Zhu and Liu 2026]
Structural dynamics, modal test and monitoring of launch structures
How a launch structure’s modes are predicted and believed. Bending and torsional dynamics, modal survey and test correlation, coupled loads and structural health monitoring. 79 titles name a mode or modal analysis.
245 records. [Acharya and Sing 2000] [Achenbach 1965] [Addona et al] [Alden and Habert 1964] [Alleaume and Frondeville 1995] [Ansari and Bajodah 2015] [Ansari and Bajodah 2016] [Ansari and Bajodah 2018] [Arimoto et al 2011] [Audric et al 2023] [Aveta et al 2023] [Bakhtin and Titov 2018] [Barret 1998] [Bartels 2012] [Beer and Lennox 1966] [Belousov and Ponomarev 2016] [Biju Prasad et al 2020] [Bin et al 2020] [Bin et al 2020] [Bin et al 2020] [Biswas 1986] [Boglis and Stoica 2020] [Borisov 2025] [Briese et al 2020] [Brown 2022] [Buchanan and Bugg 1966] [Buehrle et al 2010] [Buehrle et al 2011] [Buehrle et al 2025] [Burton et al 2008] [C.R. et al 2026] [Cai et al 2024] [Carey 1967] [Carey 1968] [Chehrzad and Khoramishad 2026] [Chen et al 2020] [Cheng 1956] [Cheng and Widera 2009] [Childs 1974] [Chu and Xu 2014] [Coakley] [Cockburn and Robertson 1974] [Cole et al 2000] [Colicci et al 2025] [Colwell 1968] [Crocco 1951] [Crocco 1952] [Crocco and Cheng 1953] [Crosswy and Kalb 1967] [Dalle et al 2024] [Darmayuda and Subchan 2026] [DeBonis et al 1999] [Diz et al 2026] [Dodge and Garza 1971] [Dolgih 2025] [Doman and Blake 2006] [Dotson and Engblom 2002] [Dotson and Engblom 2004] [Dotson et al 1998] [Du] [Du et al 2008] [Du et al 2008] [Dubois and Habiballah 1991] [Engels et al 1982] [Engels et al 1983] [Erdogan and Tekin 2025] [Fernando and Charalambous 2026] [Fisher 1976] [Foster 1989] [Gajera 2026] [Garba et al 1968] [Gerald and Runyan 1962] [Giannone and Sambasivam 2024] [Gilligan et al 2014] [Glaser 1988] [Glatt 1961] [Goble 1970] [Gore and Carroll 1957] [Greensite 1967] [Guo et al 2017] [Habiballah et al 1992] [Hanson et al 2011] [Herzog et al 1998] [Hidalgo 2000] [Horing et al 2025] [Hu 2012] [Huang et al 2000] [Hung and Hunt 1964] [Hussein and de Weck 2025] [Irvine 2003] [Ivanov 2021] [Ivanov 2022] [Jeng and Litchford 1991] [Jeon et al 2013] [Jiang et al 2026] [Johnson et al 2006] [Johnson et al 2007] [Joshi 1997] [Juarez 1961] [Kamenskii and Martirosov 2021] [Kanda 2019] [Kanda et al 2021] [Kanda et al 2023] [Kashkovsky 2014] [Kawano et al 2023] [Kilpatrick 1965] [Kim et al 1992] [Kolesnikov and Zubov 2026] [Konyukhov 2015] [Larson et al 1974] [Launch vehicle dynamics] [Launch Vehicle Dynamics Demonstrator 1963] [Launch Vehicle Stability and 2022] [Leadbetter and Raney 1965] [Leadbetter and Raney 1966] [Lee-Glauser and Ahmadi 1993] [Levine 1965] [Li et al 2022] [Liechty 2008] [Lin et al 1993] [Lin et al 2003] [Liu et al 2009] [Liu et al 2016] [Loewy 1965] [Low Frequency Oscillations in 2008] [Lubowe 1965] [Ma et al 2025] [Machado 2018] [Macpherson 1962] [Makhtoumi 2018] [Martin et al 2024] [Mayo and Nolan 1967] [McCormack 1964] [Miao et al 2022] [Miller et al 2015] [Mishina et al 2020] [Mixson et al 1964] [Mo et al 2022] [Morgado et al 2022] [Morino et al 1987] [Mowers 1967] [Murty et al 2015] [Murugesan et al 2018] [Neighbors and Ryan 1992] [Neiman and Rezakova 1975] [Newman 1969] [Ngo et al 2017] [Niu et al 2022] [Nosek 1982] [Nowak 1967] [Ohayon and Morand 1995] [Olberding 1984] [Orr et al] [Osterholt and Linehan 2025] [Otsu et al 2005] [Otsu et al 2010] [Otsu et al 2012] [Owens and Aubuchon 2011] [Pamadi et al 2016] [Pan et al 2010] [Panda et al 2026] [Patha et al 1972] [Paulson et al 2020] [Paxson et al 2022] [Pengelley 1968] [Pierce et al 1965] [Prasad 2022] [Rainey and Runyan 1961] [Reardon et al 1964] [Reda et al 2004] [Review of Dynamical Analysis 2026] [Robust Super-Twisting Sliding-Mode Controller 2025] [Rocha et al 2023] [Rogers and Dragone 1996] [Rotordynamic Analysis of a 2008] [Rubin et al 1988] [Runyan 1965] [Runyan 1965] [Vinoj et al 2022] [Sahu et al 2024] [Sargent 1970] [Schmidt and Mann 1996] [Schreiner and Roth 1992] [Seshime et al 2026] [Sharma et al 2024] [Shtessel 1998] [Shtessel 1999] [Shtessel and Baev 2008] [Shtessel and Krupp] [Shtessel and Krupp 1997] [Shtessel et al 1997] [Shtessel et al 2000] [Shtessel et al 2002] [Sills et al] [Singh et al 2026] [Skarman 1978] [Snyder et al 1974] [Somanath et al 1999] [Song et al 2026] [Stott and Shtessel 2010] [Study of structural bending 1966] [Sun 2010] [Sun et al 2026] [Surender et al 2021] [Tamura et al 2024] [Tang et al 2026] [Templeton et al 2010] [Templeton et al 2011] [Templeton et al 2025] [Thermodynamic Power Cycles for 2004] [Torisaka and Yamakawa 2011] [Tournes et al 1998] [Trushlyakov et al 2018] [Tsushima et al 2017] [Umeoka et al 2021] [Valenti 1992] [Venkateswaran et al 1991] [Vibration of a Reentry 1975] [Viviani and Pezzella 2007] [Wan et al 2020] [Wan et al 2021] [Wan et al 2026] [Wang et al 2000] [Watts 2005] [Welsh 1985] [White et al] [Wiksten 1966] [Wilke et al 2000] [Wood 1961] [Wuilbercq et al 2012] [Xiong et al 2020] [Xue et al 2026] [Yamanishi et al 2004] [Yang 2004] [Yang and Chen 2025] [Yang et al 2015] [Yuhui and Zhenguo 2002] [Zhan et al 2024] [Zhang 1984] [Zhang and He 2024] [Zhang et al 2020] [Zhang et al 2024] [Zhou et al 2024] [Zirui Wang et al 2012] [Zoladz et al 2011]
The Atlas, its derivatives and its programme record
The vehicle’s own record, and most of it is the launcher the missile became. Flight test working group reports, engine and component test programmes, the Atlas-Agena and Atlas-Centaur flight evaluations, the Mercury boosters and the later Atlas variants. 128 of its 217 records name the Centaur and 133 are report primaries, and its median publication year is 1969. Of the 5,685 titles in the whole survey, 0 name the X-11 or an Atlas A missile, which is the designation question taken up below, stated as a count.
217 records. [Agena vehicle system performance 1969] [All Shuttle Centaur engine 1987] [Allwein et al 2009] [Alper et al 1968] [Anderson et al 1965] [Arnett 1993] [Atlas Agena-18 Lunar Orbiter 1966] [Atlas Agena-25 Applications Technology 1967] [Atlas-Agena flight performance for 1969] [Atlas-Agena flight performance for 1969] [Atlas-Agena performance for the 1969] [Atlas-Centaur AC-16 flight performance 1970] [Atlas-Centaur AC-17 performance for 1972] [Atlas-Centaur AC-18 performance evaluation 1971] [Atlas-Centaur AC-19 and AC-20 1971] [Atlas-Centaur flight performance for 1968] [Atlas-Centaur flight performance for 1968] [ATLAS/AGENA-24. Lunar Orbiter-5. Flash 1967] [Atlas/Agena-26 orbiting geophysical observatory-5 1968] [Atlas/Centaur launch-on-time study Final 1965] [Atlas/Centaur Pioneer G operations 1973] [Atlas/Centaur-29 Intelsat IV F5 1972] [Austad 2001] [Baddour and Quitter 1968] [Barrett 1969] [Barrett 1969] [Batten 1965] [Baumeister 2014] [Baumeister 2015] [Bell 1982] [Berman 1966] [Berns and Lacovic 1968] [Black et al 2025] [Blatt and Aydelott 1975] [Blatt and Walter 1975] [Blatt et al 1976] [Bowine 1965] [Bowlin 2001] [Boynton 1967] [Boynton 1968] [Brusch 1976] [Brusch 1977] [General Dynamics/Astronautics San Diego Ca 1961] [General Dynamics/Astronautics San Diego Ca 1961] [Acoustica Associates Inc Los Angeles Ca 1961] [Berns et al 1968] [General Dynamics/Astronautics San Diego Ca 1962] [Rocketdyne Canoga Park Ca 1963] [Rocketdyne Canoga Park Ca 1963] [Rocketdyne Canoga Park Ca 1963] [General Dynamics Corp San Diego Ca 1992] [Campbell 1961] [Campbell 1961] [Catlin 1964] [Centaur space vehicle pressurized 1972] [Centaur tank corrosion tests 1965] [Centaur Upper Stage 1989] [Chacon 1966] [Chen et al 1986] [Chen et al 1987] [Chitwood 1962] [Christian et al 1989] [Culbertson 1965] [Davis 1965] [Dawson and Bowles 2004] [Dew et al 2008] [General Dynamics San Diego Ca Convair Div 1966] [Donahue 2026] [Dotson et al 2010] [Dungan 1966] [Dunlap and Steinetz 2004] [Eastwood and Humphrey 1967] [Eck and Mukunda 1988] [Elzufon et al 1965] [Elzufon et al 1966] [Emmerson 1978] [Escalona and Escalona 1997] [Flight performance of Atlas-Agena 1969] [Flight performance of Atlas-Centaur 1970] [Flight performance of the 1969] [Fowler 1963] [Frazier 1967] [Free et al 2002] [Friedman and Stell 1963] [Gainor 2013] [Garba and Simpson 1968] [Gehringer et al 1992] [General Dynamics San Diego Ca Convair Div 1966] [General Dynamics/Astronautics San Diegoca 1961] [Gerus and Miller 1969] [Gerus et al 1967] [Gilbert 2003] [Gill 1963] [Gillespie 2004] [Goette 1973] [Goldberg 2005] [Graham 1987] [Graham 2014] [Graham 2015] [Green and Tucker 1964] [Gribben et al 1998] [Groesbeck 1966] [Groesbeck et al 1974] [Gruszczynski et al 1991] [Hagger et al 2006] [Hansen 1964] [Harris 1964] [Hauser 1961] [Heald and Holland 1965] [Heath et al 1965] [Heath et al 1967] [Heath et al 1968] [Herud and Carey 1987] [High Speed Schlieren Studies 1960] [Hofeller 1965] [Hohmann 1963] [Holguin 2006] [Holguin 2012] [Honse et al 2009] [Hunley 2008] [Hunley 2008] [Incerto et al 1962] [Ingber 1965] [Johnson 1964] [Jones 1975] [Kachadourian 1977] [Kalogeris 1966] [Kandarpa et al 1987] [Kestenbaum 1965] [Kinstle 2020] [Kite et al 1965] [Knoll et al 1987] [Knoll et al 1987] [Kreisler 1964] [Kreiter 1965] [Kutter et al 2005] [Lacovic 1969] [Lacovic 1970] [Lacovic 1975] [Lacovic 1977] [Lacovic and Stofan 1968] [Lacovic et al 1966] [Lall 1965] [Lall et al 1965] [Langston 1967] [Launch mission summary FLTSATCOM-D 1980] [Launch mission summary INTELSAT 1981] [Launch mission summary INTELSAT 1982] [Lewis Research Center 1968] [Lorentz et al 1985] [Macneil et al 1988] [Mahoney 2013] [Martin 1993] [Martyusheva and Devyatkin 2021] [Mastronardi et al 1979] [Mattson 1965] [Matzke 2015] [Matzke 2025] [McDermott et al 1994] [Miller 1966] [Miller 1967] [Miller 1969] [Moore 1967] [Moskowitz 1965] [Moskowitz 1966] [Mosley 2011] [Nakamura 1991] [Neal 1966] [Nelson and Macklin] [Newton 1968] [Nowek and Stanton 1965] [Ogman 1980] [Performance evaluation of Atlas-Centaur 1968] [Peters and Hall 1963] [Pharokhipanah and Bouckenooghe 2024] [Plastinin et al 2005] [Pleasant and Kelly 1989] [Post-test diagnostic system feature 1994] [Postflight Evaluation of Atlas-Centaur 1965] [Postflight Evaluation of Atlas-Centaur 1966] [Postflight evaluation of Atlas-Centaur 1967] [Pradhan et al 1967] [Preliminary launch vehicle flight 1967] [Quitter and Reiss 1968] [Radke et al 1979] [Rajan et al 2019] [Ravi et al 2023] [Rector 1982] [Rector 1982] [Ringland and Stubblefield 1965] [RL10 ignition limits test 1987] [Ruscigno 1965] [Salzman et al 1973] [Schreier et al 2006] [Segal 1964] [Shelton 1966] [Shepard and Patino 1995] [Shuttle Centaur engine cooldown 1987] [Sorensen et al 1984] [Sowers 2002] [Stephens 1961] [Stofan 1966] [Stofan 1973] [Strong et al 2010] [Swanson 1977] [Symons 1977] [Tereniak and Williams 1967] [Thayer 1965] [The Atlas-Centaur 67 incident 1988] [Thomas 1960] [Thomas 1981] [Traband 1966] [Tracking and Data Relay 1973] [Tuckman 1965] [Williams 2014] [Wolfe 1966] [Young and Shiokari 1961]
Reentry vehicles and the uncontrolled return
The payload the X-11 did not carry and the stages that come back unbidden. Ballistic and lifting reentry, nose cones, ablation and heat shields, reentry trajectories and the breakup and survivability of spent stages and debris. 73 titles name ablation.
241 records. [Adams 1960] [Adams and Kao 2001] [Aeschliman et al 1975] [Al-Zaidi et al 2020] [Allen 1971] [Anderson 1969] [Annaloro et al 2020] [Appar and Kumar 2021] [Appar and Kumar 2025] [Appar et al 2022] [Aprovitola et al 2019] [Ayasoufi et al 2006] [Bacon and Matney 2017] [Badea et al 2025] [Bahramian and Kokabi 2009] [Baker and Kramer 1979] [Baker and Kramer 1982] [Balasubramanian et al 2020] [Bao et al 2019] [Bartlett et al 1970] [Bartlett et al 1971] [Bartlett et al 1971] [Battie et al 2012] [Beal et al 1965] [Bell 1965] [Bigham and Puri 2025] [Bird and Reese 1958] [Bityurin and Bocharov 2014] [Blosser 1996] [Bonivert et al 1989] [Bouslog et al 1993] [Brinich 1958] [Bulmer 1972] [Byczkowski and Rao 2026] [Catalytic Efficiency of the 1983] [Chang et al 2022] [Channon and Barry 1967] [Chapman 1965] [Chen and Milos 2004] [Chen et al 2015] [Chen et al 2025] [Chhallani and Nemati 2025] [Chin et al 1964] [Christoph 1985] [Clapp 1965] [Collins et al 1963] [Combs et al 2014] [Congdon 1995] [Cornette and Sullivan 1971] [Crenshaw 1983] [Cui et al 2022] [Dantsuka et al 2019] [Darnell 1966] [Degtyarev et al 2006] [Detra and Hidalgo 1961] [Di Clemente and Ferrarella 2010] [Dicristina and Richards 1977] [Ding et al 2023] [Dinonno et al 2016] [Dolton and Reed 1966] [Donahue and Farrell 1979] [Dorne and Shube 1968] [Droms et al 1976] [Eilertson and Wing 1966] [Elliott 1969] [Fante et al 1970] [Farbar et al 2012] [Ferreira Santos 2022] [Finke 1990] [Finson et al 1980] [Flow Simulation over a 2019] [Frankenthal 1964] [Fukuda et al 2017] [Funatsu and Hiroyuki 2001] [Gaitonde and Shang 1993] [Gannon and Laszlo 1966] [Gao and Zhu 2025] [Gerasimov 2025] [Golden 1969] [Gondelach et al 2017] [Gornostaev et al 2008] [Grabowsky et al 1981] [Grasso and Passalacqua 1991] [Gravlee et al 2014] [Guarino 1968] [Gui et al 1999] [Guo 2024] [Harvey 2008] [Heat-shield ablation and sublimation 1965] [Heidrich and Braun 2017] [Hillberg 1967] [Hollis and Liechty 2006] [Hong and Neuenschwander 1991] [Hou et al 2022] [Houser and Vanderleest 1972] [Hove and Shih 1977] [Huang and Yao 2019] [Huang et al 2024] [Huebner et al 1988] [Huebner et al 1989] [Hull et al 1981] [Hurwicz et al 1964] [Jie Liang 2020] [Johannessen 1964] [Johnis 2023] [Johnson and Joseph A. 1977] [Joint Conference on Lifting 1960] [Jones and Walters 2007] [Kamimura et al 2012] [Kennedy and Fields 1962] [Kidner 1993] [Ko et al 2007] [Kraetzig et al 2014] [Kryvoruka 1976] [Kumar et al 2017] [Laganelli 1980] [Larson 1969] [Ledu and Pollak 1968] [Legendre et al 1980] [Lennon and Poirter 1974] [Li 1989] [Li et al 2016] [Liang et al 2024] [Lin and Rubin 1979] [Lin et al 1982] [Lincoln 1981] [Lind and McIlwraith 1965] [Liu et al 2010] [Liu et al 2026] [Loshkarev 1977] [Lovelace 1961] [Low-density phenolic nylon nosecap 1965] [Lu 1996] [M.L.Jorlin et al 2026] [Machin and Daum 2026] [MARK 5 and 11 2021] [Marshall 1968] [Marshall and White 1968] [Masaki and Yakura 1968] [McAlees 1968] [Mehta 1999] [Mehta 2023] [Milos 1996] [Milos 1997] [Milos et al 1997] [Mongibello and de Luca 2008] [Monti et al 2006] [Moody et al 1975] [Morrison et al 1981] [Murphy 1961] [Muthu et al 2020] [Nakasato et al 2015] [Nardo and Sadler 1962] [Nardo et al 1961] [Navaz and Ntantis 2026] [Nelson 1967] [Nichols 1961] [Odion Iyinomen 2022] [Ohkage et al 2025] [Onay and Eyi 2020] [Palmer et al 1995] [Pan et al 2023] [Park and Balakrishnan 1985] [Parsons 1964] [Penner and Olfe 1968] [Pepper 1977] [Persen 1969] [Platus 1967] [Platus 1978] [Platus 1983] [Porter 1981] [Priyadarshi and Mittal 2010] [Putz and Bartlett 1972] [Putz and Bartlett 1973] [Ramjatan et al 2017] [Rana and Chudoba 2016] [Raper 1981] [Ravichandran et al 2023] [Reentry vehicle nosetip material 1977] [Ren 2025] [Richards et al 1971] [Richman 1967] [Rigali et al 1980] [Rindal and Dahm 1967] [Rivier et al 2019] [Rochefort et al 1974] [Rogers et al 2022] [Sakai et al 2017] [Sayles 1965] [Scherberg and Rubin 1953] [Schneider et al 1972] [Schouler et al 2021] [Schweppe 1964] [Shang and Gaitonde 1994] [Sherman 1978] [Shi et al 2023] [Shilav and Khosid 2020] [Shinnick 1966] [Shvab and Loshkarev 1973] [Sohn et al 2011] [Spallation of the Galileo 1983] [Stadler 1993] [Stalder 1957] [Stern 2004] [Stern 2008] [Stern and Chu 1963] [Stetson 1964] [Study on Response of 2020] [Study on Response of 2021] [Sun et al 2015] [Sunken Reentry Vehicle 2013] [Suzuki et al 2002] [Swain 1975] [Szczepanowska and Mathia 2011] [Szu 2023] [Tahsini and Mousavi 2014] [Taylor et al 1993] [Thermal Protection for a 2015] [Thomas and Perlbachs 1967] [Tian et al 2025] [Ting et al 1986] [Trushlyakov et al 2019] [Urazbakhtin et al 2014] [Van Ghele et al 2018] [Viviani et al 2008] [Vo et al 1993] [Wachi and Gilmartin 1966] [Wan et al 2025] [Wang et al 2014] [Wartemann et al 2018] [Webb et al 2026] [Weilmuenster et al 1996] [Wong et al 1960] [Wortman 1969] [Wu et al 2018] [Xiao et al 1991] [Xiao et al 2018] [Xu and Yang 1993] [Zakkay and Wang 1973] [Zhao 1993] [Zhong et al 2007]
Pressure-stabilised and inflatable structure
The keystone’s own literature, and most of it is about something else under pressure. Internally pressurised cylinders and tubes, pressure-stabilised beams and arches, inflatable booms, tubes and habitats, and the wrinkling that ends their bending strength. 121 of its 184 records concern internally pressurised cylinders, tubes and shells and 51 concern inflatable structure, and the propellant tank itself is taken up under Thin Subjects.
184 records. [Ali and Jean François 2002] [Amazigo 1973] [Amazigo 1974] [Analysis of Thermal Stress 2012] [Batista and Croll 1982] [Berry and Reissner 1958] [Bieniek et al 1962] [Birukov et al 2014] [Blachut 2004] [Bloom 1985] [Bloom 1986] [Bonde and Rao 1978] [Bouazizi et al 2018] [Buckling of thin-walled pressurized 2008] [Błachut 2005] [Cesari 1985] [Chang 1988] [Chaudhuri et al 2008] [Chung et al 1986] [Curtin and Adey 2000] [Daanouni et al 2009] [Davids 2023] [Dillman 2015] [Du et al 2012] [Du et al 2013] [Du et al 2024] [Duncan and Sanders 1969] [Durelli et al 1970] [Edge et al 2010] [End effects on internally 2023] [Fenwick and Karigan 1977] [Fesharaki 2020] [Finnie 1960] [Fok and Travis 1989] [Folias 1965] [Folias 1967] [Folias 1984] [Fujimoto and Shioya 2005] [Furuya and Yasuike 2009] [Furuya and Yokoyama 2013] [Futterman and Rubinstein 1968] [Galletly 1978] [Galletly and Blachut 1987] [Galletly and Radhamohan 1979] [Gashe et al 2025] [Gasiak 1992] [Ge et al 2026] [Girase 2015] [Glaser 2021] [Gong et al 2026] [Gonzalez and Martinez 2013] [Gruszczynski et al 1988] [Guo et al 2022] [Han et al 2006] [Haseganu and Steigmann 1994] [Haßler and Schweizerhof 2008] [He 2024] [He et al 2023] [Hu et al 2025] [Huang et al 2025] [Hyer and McMurray 1999] [Hyer and Wolford 2002] [Hyer et al 2003] [Jalaja et al 2024] [Ji et al 2017] [Jiang et al 2026] [Jones 2018] [Kanlıkama 2013] [Kessel 1971] [Koike et al 2018] [Krainski and Walter J. 1988] [Kundu and Mukhopadhyay 2025] [Kömle et al 2025] [Larsson et al 1982] [Latta et al 1977] [Lau and Listvinsky 1981] [Lazghab and Soula 2014] [Le van and Wielgosz 2005] [Leitch 1986] [Leitch 1988] [Leitch 1999] [Li et al 2017] [Limam et al 2010] [Lin 1981] [Lind 1968] [Liu and Yang 2017] [Lovejoy et al 2010] [Ma et al 2024] [Ma et al 2026] [Mannani et al 2023] [Matsunaga et al 2017] [McMurray and Hyer 2000] [McMurray and Hyer 2001] [McMurray and Hyer 2001] [McMurray and Hyer 2002] [Miller and Gerus 1966] [Mirels and Zondervan 2005] [Mirels and Zondervan 2006] [Murthy et al 1972] [Newman 1973] [Newman and Ojalvo 1966] [Nguyen et al 2015] [Nicholson et al 1980] [Niedenfuhr 1963] [Ong 1994] [Peery 1964] [Perl and Levinsohn 1989] [Peterson 1960] [Petritoli et al 2023] [Pidvysotskyi 2021] [Polenta et al 2015] [Poza et al 2010] [Prof. S. V. Tawade 2019] [Pu 1985] [Radhamohan and Galletly 1979] [Ramarathnam et al 2024] [Rastogi and Johnson 1995] [Rastogi and Johnson 1996] [Reissner 1959] [Rioseco Olave et al 2023] [Rufer et al 2013] [Samadzadeh et al 2024] [Shivakumar and Avva 1996] [Singh et al 2024] [Sorić 1991] [Sorić 1995] [Sorić and Zahlten 1995] [Stamenovic 1988] [Steeves 1975] [Steeves 1975] [Steeves 1978] [Steeves 1978] [Steeves 1979] [Stresses in thick-walled pressurized 2023] [Sun et al 2022] [Sun et al 2023] [Sun et al 2023] [Sutton 2004] [Taira and Ohtani 1968] [Takahashi et al 2013] [Takahashi et al 2019] [Tao et al 2016] [The application of linear 1990] [Thomas and Bloch 2016] [Throop and Fujczak 1983] [Tian et al 2009] [Ting and Tuan 1973] [Tlilan et al 2019] [To et al 2013] [Traexler 1960] [Tsunori et al 2007] [Underwood 1972] [Veldman 2006] [Ventura et al 2023] [Vibration of Pressurized Cylinders 1991] [Wang et al 1998] [Wang et al 2012] [Wang et al 2013] [Wang et al 2017] [Wang et al 2025] [Wang et al 2026] [Weingarten 1962] [Weingarten 1964] [Witherell and Scavullo 1990] [Wolford and Hyer 2005] [Wu et al 2024] [Yahsi and Erdogan 1985] [Yamada 1997] [Yang et al 2022] [Yao et al 2015] [Yokouchi et al 1988] [Yoo et al 2007] [Yu 2026] [Yun and Liu 2023] [Zender 1962] [Zhang et al 2016] [Zhang et al 2025] [Zhangabay et al 2024] [Zhao and Teng 2000] [Zhao et al 2022] [Zhao et al 2024] [Zhao et al 2025] [Zheng et al 2014] [Zhu et al 2018]
Launch acoustics, vibration and sonic fatigue
The environment computed above at 153 decibels. Lift-off and in-flight acoustics, payload fairing noise, vibroacoustic response and sonic fatigue. 45 titles concern lift-off, the launch pad or launch noise, which is the load case of a vehicle standing on its own exhaust.
167 records. [Abhishek Hari 2026] [Acoustic Sensitivity Measurements of 1996] [Alestra et al 2002] [Alestra et al 2003] [Ali et al] [Ashida et al 2013] [Avirah et al 2026] [Ballentine et al 1966] [Bangs 1974] [Bickford 1968] [Borchers 1998] [Cadieux et al] [Casiano 2009] [Cheng et al 2006] [Cheng et al 2025] [Chernobryvko et al 2024] [Choi and Lee 2021] [Clarke and Gutierrez 2000] [Coelho da Silva Stanisce Corrêa et al 2020] [Cohan and Miller 2011] [Counter and Houston 2011] [Counter and Houston 2012] [Counter and Houston 2012] [Crandall and Mark 1963] [Crandall and Mark 1963] [Crandall and Mark 1963] [da Silva Stanisce Corrêa et al 2021] [Dahm and Krause 1966] [Davis and Fischbach 2010] [Della Posta et al 2026] [Denoyer et al 1998] [Dougherty et al 2006] [Dynamic loads on Mu-series 1994] [Edge and Mueller 1965] [Engberg and Korde 2013] [Engbrenghof 1967] [Escartí-Guillem et al 2022] [Ferrara et al 2007] [Flanigan 1989] [Frampton 2002] [Franken et al 1963] [Gee et al 2025] [Gely et al 2000] [George 1966] [Giacomoni 2014] [Glaese and Anderson 1999] [Griffin et al 2000] [Griffin et al 2008] [Harris et al 2014] [Hasis et al 2026] [Henderson et al 2002] [Herrero Durá] [Herron et al 2016] [Higgins 2007] [Hines 1966] [Housman et al 2012] [Houston et al 2009] [Houston et al 2010] [Houston et al 2010] [Houston et al 2015] [Howard and Hansen 2006] [Hughes and McNelis 2014] [Hung and Hunt 1964] [Hwang 2002] [Hwang 2003] [Jin et al 2024] [Keast 1961] [Kemp and Clark 2000] [Kemp and Clark 2003] [Kenny and Giacomoni 2016] [Khamlak 2026] [Krishna 2022] [Kudryavtsev and Safronov 2012] [Large eddy simulation of 2023] [Larko and Hughes 2008] [Laroche et al 2000] [Launch Vehicle and Payload 2022] [Leo and Anderson 1998] [Liever and West 2016] [Liever and West 2016] [Lipnitskiy and Safronov 2014] [Liu et al 2023] [Liu et al 2023] [Liu et al 2023] [Lubert et al 2016] [Majed et al] [Margasahayam 2009] [Khamlak 2025] [Micci 1997] [Mori et al 2019] [Morshed et al 2013] [Morshed et al 2014] [Müller and Westerlund 2003] [Nacht and Turk 1966] [Nance et al 2015] [Natarajan and Venkatakrishnan 2015] [Ohtsuka et al 1981] [Pan et al 2026] [Panda 2014] [Panda et al] [Panda et al 2013] [Panda et al 2013] [Panda et al 2014] [Panda et al 2025] [Paolozzi and Peroni 1996] [Park 2014] [Park et al 2016] [Petrenko 2025] [Peverley 1962] [Piotr et al 2019] [Plotkin et al 2009] [Popov et al 2019] [Qiu et al 2026] [Arun Raj et al 2026] [Ballentine et al 1968] [Cunningham et al 2024] [Douglas Aircraft Co Long Beach Ca 1963] [Hrinchenko 2020] [Kenny et al 2009] [Lu et al 2023] [Popov 2025] [Reddy et al 2026] [Reese 1967] [Roberts and Wilhem 1964] [Salehian and Mankbadi 2020] [Salehian et al 2018] [Sarae et al 2017] [Sarae et al 2018] [Schneider and Rudder 1973] [Sepcenko et al 1990] [Sescu et al 2015] [Shimazaki and Shi 2021] [Sills et al] [Smith and Harrison 2010] [Smoot and Seliga 1967] [Steva 2017] [Strutzenberg and Liever 2011] [Tanner 1997] [Tedrick 1965] [Thomas 1987] [Tomioka and Kohsetsu 1990] [Tosh et al 2012] [Troclet et al 2011] [Trout et al 2011] [Tsivouraki et al 2025] [Tsutsumi et al 2009] [Tyzzer 1963] [Tyzzer and Pernet 1964] [Varma et al 2024] [Vreeland 1960] [Vu 2007] [Wang 1966] [West et al 2012] [Wignall et al] [Williams 1992] [Williams 1997] [Williams 1999] [Xing et al 2020] [Xing et al 2020] [Xing et al 2022] [Yenigelen and Morris 2020] [Yenigelen and Morris 2021] [Yunis 2013] [Zafrane et al 2013] [Zhang et al 2026] [Zhou et al 2024] [Zhou et al 2025]
Materials, manufacture, welding, fracture and the proof test
The material and the acceptance test. Stainless steel in thin sheet and at cryogenic temperature, manufacture, thin-sheet welding, pressure-vessel fracture, burst testing and proof testing. 67 titles name stainless steel and 10 name the 301 alloy the Atlas was built from.
160 records. [Agarwal et al 2025] [Akbar and Kobayashi 2023] [Alam et al 2020] [Alexander and Fournier 1963] [Allgeier and Forman 1970] [Anbalagan and Thirupathi 2025] [Apatovskii et al 1967] [Azuma et al 2013] [Azzi et al 2010] [Bailie et al 1980] [Barclay 1965] [Bi et al 2026] [Bin 2017] [Brust et al 2019] [Buffa et al 2013] [Butt welding of very 1952] [Cain and Sharp 1993] [Cain et al 1990] [Cain et al 1991] [Cen et al 2019] [Chen et al 2010] [Chethan Kumar et al 2022] [Robert 1996] [DeSisto and Carr 1961] [DeSisto and Carr 1961] [Dian Fitria Ramdani and Dene Herwanto 2026] [Ding et al 2025] [Dobson and Johnson 1984] [Dragone 2000] [Dwivedi et al 2013] [Edwards et al 2023] [Eremin 2021] [Eremin and Moskvichev 2020] [Farid and Molian 2000] [Fergusson et al 1953] [Finger 1974] [Finger 1976] [Finger 1979] [Florist et al 2024] [Fukumoto et al 2008] [Funada and Abe 2003] [Gawthorpe 1979] [Geng et al 2011] [Giovanola et al 1998] [Girton 1962] [Grenoble et al 2018] [Greulich et al] [Gubeljak et al 2012] [Guntner and Reed 1962] [Guzman-Leong et al 2013] [Haddad et al 2024] [Harris and Dunegan 1972] [He 2025] [Heer and Yang 1970] [High-Speed Tandem Pulsed GTAW 2019] [Hydrogen-Stress Cracking of Type 2019] [Ikushima 1993] [Ilangovan et al 2023] [Ismail 2011] [Jalaja et al 2023] [Jha et al 2004] [Jha et al 2006] [Johnson and Kelsen 1969] [Johnson et al 2023] [Johnson et al 2023] [Johnson et al 2023] [Jones et al 1999] [Kadam et al 2018] [Kauczor 2019] [Kern and Lubin 1963] [Kitching 1980] [Krużelecki and Proszowski 2012] [Kuentz 1969] [Kumar et al 2024] [Launch Vehicle Manufacturing 2022] [Li et al 2018] [Li et al 2022] [Liao and Yu 2007] [Liu et al 2025] [Lu et al 2023] [Luo et al 2025] [Luo et al 2026] [Luttrell and Henderson 1974] [Lüders et al 2025] [Manning and Price 1961] [Manwatkar et al 2024] [Markelj and Tušek 2001] [Masters et al 1966] [Minnetyan and Chamis 1995] [Mirza and Gupgupoglu 1988] [Moreton and Moffat 1991] [Moskovic 1988] [Mukherjee et al 2025] [Mullin et al 2025] [Muraca and Whittick 1972] [Nagy and Behúlová 2017] [Nakahara et al 1997] [Narayanaswamy et al 2025] [Nie et al 2018] [Noda 1993] [Noda 1993] [Nolan 1964] [Nordberg 2005] [Novikov and Chechin 1973] [Okamoto 2008] [Okamoto et al 2015] [Olalekan et al 2026] [Outwater and Seibert 1962] [Paleti et al 2026] [Pankaj et al 2019] [Panontin and Hill 1996] [Pei et al 2012] [Podnos et al 2018] [Pressure Vessel Bursts 2010] [Procter 1988] [Płaczek et al 2023] [Qiu et al 2023] [Regassa et al 2022] [Ried 1966] [Ried and Arnold 1966] [Rintamaa et al 1989] [Russell et al 2018] [Saito et al 1970] [Sato et al 1969] [Schonberg 2020] [Schwartzberg et al 1979] [Shah Ismail et al 2011] [Simonen 1985] [Smith et al 2003] [Sneddon et al 1999] [Stanciu et al 2014] [Su et al 2025] [Szyszkowski and Glockner 1987] [Tanaka et al 1990] [Teodorescu and Irimescu 1988] [Thompson et al 2025] [Tozawa 1969] [Urbin 1991] [Vijayakumar and Lakshminarayana 2023] [Vilar and Miranda 1988] [Wang et al 2011] [Wang et al 2013] [Wang et al 2022] [Warkina et al 2026] [Watson 1960] [Watson and Christian 1961] [Whipple and McHenry 1983] [Widjaja] [Xu et al 2025] [Yan et al 2015] [Yang 2018] [Yurchenko 2026] [Yurchenko et al 2025] [Zhao and Liu 2014] [Zhao et al 2025] [Zhou et al 2013] [Zhou et al 2017] [Zhu 2025] [Zhu et al 2023] [Zolfaghari and Izadi 2020]
Flight test, reliability and launch operations
What a short flight series can and cannot establish. Launch-vehicle and missile reliability, flight-test programmes, range safety, launch complexes and ground support equipment. 52 titles name reliability.
119 records. [A successful program for 1992] [AAP preliminary range safety 1967] [Aher 2024] [Ahmad 1992] [Almetwally et al 2026] [An integrated missile reliability 1984] [Aytulun and Ermis 2009] [Bellantoni and Koenke 1968] [Bloomer 2005] [Blumenthal and Denton 1962] [Bowser and Busch 1966] [Von Braun 1962] [Braun et al 1970] [Cates et al 2012] [Cates et al 2013] [Chang 1995] [Cheng and Tam 2014] [Christie and Greenberg 1973] [Clark and Curran 1990] [Condition Assessment of Launch 2015] [Corl et al 2014] [Cross and Vesely 2018] [Davis et al 2007] [DeLuna 2012] [Dennehy et al 2010] [Doerr 1991] [Drozdov et al 2020] [Ferrell 2001] [Fine et al 1965] [Fine et al 1966] [Garvey and Besnard 2005] [Gaver and Jacobs 1997] [Guikema and Pate-Cornell 2003] [Hara et al 2006] [Al Hassan and Novack 2015] [Al Hassan et al 2017] [Al Hassan et al 2017] [Honeycutt et al 2020] [Hong and Kim 2014] [Huang et al 2005] [Hunt 2011] [Ireland and Gonzales 2020] [Jones 2024] [Justice 1965] [Kasouf and Weiss] [Kim and Lee 2013] [Kim et al 2012] [Kitsios and Lygeros 2005] [Krevor and Wilhite 2007] [Launch Vehicle Systems and 2022] [Lawrence et al 2014] [Li et al 2025] [Lim et al 2024] [Lonzaga] [Losik 2010] [Losik 2010] [Majamaki and Lee 2011] [Manning et al 2010] [Mattenberger et al 2012] [McDanels 2019] [Mettler and Towner] [Mocio 2001] [Mohammad and Novack 2015] [Moore 1958] [Morse et al 2010] [Nagappa 2023] [Nakagawa et al 1999] [Neelans 1986] [Newton and Makrides 1954] [Novack et al 2018] [Operational BASE Missile TEST 2021] [Parsons 1970] [Powell 1962] [Powers 1961] [Pre-launch calculation of space 1964] [Prosser] [Arjun et al 2012] [Hatfield et al 2016] [Lu et al 2021] [Lu et al 2022] [Rae 1961] [Raouf and Pourtakdoust 2017] [Review and Prospect of 2026] [Rice 2013] [Rosch and Schor 1990] [Roshanian and Ebrahimi 2013] [Rusick 2007] [Safie and Weldon 2007] [Safie and Weldon 2007] [Safie et al 2002] [Safie et al 2014] [Saratayon and Petchartee 2015] [Sauvageau and Allen 1998] [Schuiling 1988] [Sobel 1963] [Stower 2024] [Suresh] [Tarzwell and Colley 1979] [Thakur et al 2019] [The Use of Artificial 2004] [Tierney 1993] [Tinney et al 2019] [Trowbridge and Van Horne 1960] [Unal et al 2004] [Vickery 1963] [Vijayan and Suresh Babu 2015] [Wagenblast and Bettinger 2024] [Wang and Miao 2026] [Wang et al 2019] [Ward 2015] [Wensley and Uhrich] [Williams 2018] [Williams and Corcoran 1963] [Williams-Hayes 2007] [Xu et al 2011] [Yamazaki et al 1985] [Yan et al 2016] [Zhao et al 2025] [Zhu 2026]
Pogo and propulsion-structure coupling
The coupling of structure and feed system along the vehicle’s axis. Pogo analysis, accumulators and suppressors, and the longitudinal combustion instabilities that share its mechanism. 60 of its 71 records name pogo itself.
71 records. [A Study on the 2003] [Ackerman et al 1970] [Aldrich 1967] [Barrere et al 1970] [Bowman 1967] [Chapin 1974] [Dimaggio and Nishimoto 1972] [Dolgopolov 2025] [Dolgopolov and Nikolayev 2024] [Dotson et al 2014] [Farrel and Fenwick 1973] [Flandro et al 2004] [Goldman 1967] [Goldman and Miessner 1965] [Goldman and Miessner 1966] [Haddick 1980] [Hanks and Stephens 1969] [Hill et al 1969] [Kenna et al 1964] [Kim et al 2015] [Larsen 2008] [Lee et al 2017] [Lehtinen and Lorenz 1979] [Lewis 1969] [Li et al 2014] [Licht and Park 1967] [Liu et al 2020] [Lock and Rubin 1976] [Lores and Zinn 1973] [Lou et al 2025] [Marcus et al 1969] [McDougal et al 2016] [Mellquist et al 2024] [Mitchell et al 1969] [Mitra et al 2021] [Nguyen and Sirignano 2018] [Nguyen and Sirignano 2019] [Nguyen et al 2017] [Nguyen et al 2018] [Nikolayev et al 2026] [Ono et al 1987] [Oppenheim and Rubin 1992] [Park et al 2018] [Pasini and Amoroso 2018] [Payne and Rubin 1974] [Peugeot et al 2010] [Peugeot et al 2011] [Pinson and Harbison 1972] [POGO prevention of H-2 1994] [Prevention of coupled structure-propulsion 1970] [Raji et al 2019] [Riley and Sterett 1970] [Rubin 1965] [Rubin 1966] [Rubin et al 1973] [Sakaki et al 2018] [Sim et al 2016] [STS-1 Pogo analysis 1981] [Swanson and Giel 2009] [Tan et al 2023] [Ujino et al 1989] [Wang et al 2014] [Wang et al 2014] [Wang et al 2021] [Winje 1968] [Wu et al 2023] [Yoo et al 2021] [Yoon et al 2021] [Zhang and Zhang 2014] [Zhao and Tan 2026] [Zhao et al 2024]
What a Conventional Vehicle Would Have Had to Achieve
It has been argued throughout that the balloon tank was necessary, and the range table appears to prove it. That table, however, compares the Atlas against a heavier version of itself, which is not the comparison a designer in 1951 faced. The real alternative was a conventional two-stage vehicle, which discards a whole tank set and therefore gets a much larger staging benefit than the Atlas half-stage does. Setting the two against each other is the comparison this discussion owes.
Take a two-stage vehicle carrying the same total propellant, split equally between the stages, with each stage having a structural fraction $f$ of its own loaded mass. The stage structures are then
\[m_{s} = \frac{f \, m_{p} / 2}{1 - f}\]and the total ideal velocity is the sum of two logarithms rather than one,
\[\Delta v = v_{e} \left[ \ln \frac{m_{\text{all}}}{m_{\text{all}} - m_{p}/2} + \ln \frac{m_{2}}{m_{s}} \right]\]Evaluating it across structural fractions from eight to twelve percent, and carrying each result through the same loss calibration and the same range relation, gives
| Two-stage structural fraction | Gross mass | Ideal velocity | Range |
|---|---|---|---|
| 0.08 | 122,288 kg | 8689 m/s | 11,047 km |
| 0.10 | 125,006 kg | 8021 m/s | 7,521 km |
| 0.12 | 127,847 kg | 7467 m/s | 5,665 km |
against the Atlas at 117,900 kilogrammes, 8530 metres per second, and 9,999 kilometres.
The crossover sits near a structural fraction of eight and a half percent, and the Titan I, the conventional two-stage missile actually built, had stages on both sides of it. Its operating manual gives tank capacities of about 7,750 gallons of fuel and 12,400 of liquid oxygen in the first stage and 2,027 and 2,985 in the second USAF 1963 T.O. 21M-HGM25A-1-1, HGM-25A Missile Weapon System Operation. At the propellant densities used in the weight summary of a later Atlas Lewis Research Center 1968, those capacities hold about 75,400 and 18,600 kilogrammes, and against the empty masses of 4,000 and 1,725 kilogrammes in the compilation HGM-25A Titan I they give structural fractions of about 5.0 percent for the first stage and 8.5 percent for the second. Because a capacity bounds the load from above, these fractions are if anything low. The compilation’s loaded masses give 5.2 and 6.0 percent instead, but they credit the second stage with about half again the propellant its tanks held, and they sum to 105,142 kilogrammes, where the capacities and the same empty masses come to about 99,800 before the reentry vehicle is added, close to the 220,000 pounds of the directory entry Parsch 2006 Martin SM-68/HGM-25/LGM-25 Titan. The adopted Titan I fractions are therefore 5.0 and 8.5 percent, with 5.2 and 6.0 as the compilation’s alternative.
The equal split of the model differs from the Titan I arrangement, which carried about four fifths of its propellant in the first stage, where its fraction was lowest. Given the Atlas propellant load in Titan I proportions and either set of Titan I fractions, the same model gives an ideal velocity of 10,700 to 11,000 metres per second against the Atlas’s 8530. On this model a two-stage vehicle built to Titan I proportions outranges the Atlas half-stage by a wide margin. The comparison that bears on the balloon tank is the reverse one. The Atlas fraction is 4.6 percent on the compilation masses used throughout and 4.5 percent on the later Atlas’s recorded dry weights of 6,111 pounds for the booster section and 5,443 for the sustainer against 247,562 pounds of flight expendables Lewis Research Center 1968, so the best conventional stage of the comparison, the Titan I first stage, sits between about half and four fifths of a percentage point above it. Rebuilt at that first-stage fraction of 5.0 to 5.2 percent, the Atlas half-stage reaches about 8,060 to 8,580 kilometres on the same model against 9,999. The balloon tank therefore made a single-and-a-half-stage intercontinental vehicle possible, while a conventional two-stage vehicle was the lighter route to the same range, and the half-stage bought the avoidance of an altitude ignition with it, a reading that fits the ballistic missile field going multistage and never coming back.
This does not weaken the article’s argument so much as locate it. The rocket equation punishes structural mass whatever the configuration. The Atlas spent its structural budget on a radical tank and saved a staging event. Titan spent it on a conventional tank and paid for an altitude ignition HGM-25A Titan I. Both were answers to the same logarithm, and the Titan I first stage came within a percentage point of the Atlas structural fraction while its second stage ran at nearly twice the Atlas figure, a smaller margin than the drama of the balloon tank suggests, and one that still costs a half-stage vehicle between a seventh and a fifth of its range.
Sensitivity to the Knockdown Factor
The article’s most quotable number is that the tensile allowable exceeds the compressive one by a factor of sixty-seven, and that number is not a measurement. It is a classical buckling stress multiplied by a factor of 0.2 chosen from a band of experimental scatter. The question is how far the conclusion moves when that choice moves.
| Knockdown | Compressive allowable | Pressure needed | Margin on the 5 psi spec | Tensile over compressive |
|---|---|---|---|---|
| 0.15 | 10.8 MPa | 1.93 psi | 2.59 | 89 |
| 0.20 | 14.4 MPa | 2.58 psi | 1.94 | 67 |
| 0.30 | 21.6 MPa | 3.87 psi | 1.29 | 45 |
| 0.50 | 36.0 MPa | 6.44 psi | 0.78 | 27 |
Two things follow. The qualitative claim is robust and the quantitative one is not. Across the plausible range the tensile allowable exceeds the compressive one by between twenty-seven and eighty-nine times, so the asymmetry that motivates the design survives any reasonable choice, but the specific figure of sixty-seven does not and should be read as an order rather than a value.
The second is a usable consistency check. At a knockdown of 0.5 the five-pound standing pressure would be insufficient, with a margin below one. The reported specification is therefore consistent only with a knockdown below about 0.4, which the design lower bound of about 0.18 in NASA’s criterion satisfies NASA 1968 Buckling of Thin-Walled Circular Cylinders. The vehicle’s own maintenance specification independently bounds from above the design factor its engineers must have used, which is a small result but a satisfying one, because it is the only place in this article where a number from the operational record constrains a number from the design process.
Where the Framing Breaks Down
Treating the X-11 through the mass-fraction keystone illuminates the design but misleads in six ways.
It was not a complete missile. No operational guidance Convair X-11, no reentry vehicle, no warhead, and a range about a tenth of the requirement Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960. The X-11 is the airframe and the booster propulsion and nothing else.
The structure was not the programme’s actual difficulty. Five of eight flights failed by the flight-by-flight record, and the failures were heating, plumbing, turbopumps, pneumatics and electrical shorts Convair X-11. A treatment organised around the balloon tank gives the impression that the daring part was the hard part, and the flight record says the opposite, and the record that shows it is the Difficulties Review of General Dynamics San Diego Ca Convair Div 1966 rather than any structural document.
Mass fraction stopped being binding. The keystone that justified the design is the reason the design was abandoned, since later vehicles could afford heavier structure and could not afford the handling.
The keystone is a structural principle rather than a vehicle. Almost all of what this article derives applies to the Atlas family, to Centaur, and to any pressure-stabilised shell, and very little of it is specific to the eight articles that flew as Atlas A. A treatment organised this way tells the reader about a design idea and uses one machine as the occasion. That is a legitimate way to write about a testbed whose own record is thin, and it should be said out loud and not left as an impression.
And the comparison the article makes is with itself. The range table varies the Atlas structure and the two-stage section varies a hypothetical alternative, but neither is a comparison with a vehicle that was actually built. Titan I flew, used a conventional structure, reached intercontinental range, and is not analysed here beyond its tank capacities and stage masses USAF 1963 T.O. 21M-HGM25A-1-1, HGM-25A Missile Weapon System Operation HGM-25A Titan I. The position taken here is that this article establishes what the balloon tank was worth in the abstract and leaves the empirical comparison to a reader with both sets of mass properties, which the accessible record supplies only in part, as the tank capacities of the Titan I operating manual, the empty masses of a compilation and the recorded dry weights of a later Atlas.
The mass figures are not the vehicle’s own. The structural fraction, the mass ratio, and all that is computed from them use the Atlas D figures of the SM-65 Atlas compilation, because no empty mass for the Atlas A has been found. The one Atlas A mass on record is the 181,000 pounds at which Cleary 1991 The 6555th, Missile and Space Launches Through 1970 gives the planned Series A test missiles, against 243,000 for the Series C and D, while all four series share the same seventy-five by ten foot shell. The range table therefore describes the family rather than the article that flew. The Epistemic State repeats this, and it is the largest single weakness in the quantitative argument.
What the X-11 Was Worth
A testbed is worth what it removed from the programme’s uncertainty, and that can be stated for this one more precisely than for most.
It removed the structural question completely and on the first flight. Before June 1957 the proposition that a shell thinner in proportion than a drink can, held up by five pounds of nitrogen, would survive launch was an argument. After a vehicle tumbled at two kilometres and held together it was a fact, and no later Atlas flight added to that knowledge. One flight, two kilometres, and the largest single risk in the programme was retired.
It removed most of the propulsion question over seven further flights, which is a poor return per flight and the only return available, because propulsion faults are individually rare and collectively common and there is no substitute for accumulating them.
It removed almost nothing about guidance, reentry, or range, because it carried no operational guidance, no reentry vehicle, and flew at about two fifths of the required speed. Those were the Atlas B and the later variants.
The programme’s own sequencing confirms the reading. The first Atlas B flew from Pad 11 on 19 July 1958 Cleary 1991 The 6555th, Missile and Space Launches Through 1970, forty-six days, or six and a half weeks, after the last Atlas A. Such an interval does not suggest a programme waiting for a verdict. The A was allowed to overlap its successor because the question it existed to answer had been settled a year earlier and the work since had been debugging, and debugging is work that transfers to the next article rather than gating it.
The distribution is lopsided and it is the distribution a good testbed should have. The riskiest item was retired first and cheapest, and the items that could only be settled by building the real weapon were left to the real weapon. Set against the X-10, which retired almost nothing because its risk was a quantity that accumulates, the X-11 is what a testbed looks like when the physics cooperates.
The Designation as the Series Question
The previous article found that the X-8, the X-9, and the X-10 were all RTV-A vehicles before they were X vehicles, and concluded that three apparent anomalies were one administrative act seen three times. The X-11 does not fit that explanation, and the misfit is informative.
The Atlas A was never an RTV-A vehicle. It came from a weapon programme with its own designation lineage, running MX-1593, then B-65 in 1951, then SM-65 in August 1955, with the Atlas A itself the XB-65A and then the XSM-65A Parsch 2005 Convair B-65/SM-65/CGM-16/HGM-16 Atlas, and the X-11 label sits beside that lineage rather than inside it. So whatever attached an X number to this vehicle was not the RTV absorption that explains the previous three. The line did pass through that series once. Neufeld records that the MX-774 test vehicles of 1946 and 1947 were also called RTV-2-As or Hirocs, so the Atlas’s ancestor carried a research test vehicle designation a decade before the X-11 label appears, and no document read for this article connects the earlier designation to the later X number. The accessible record does not say what it was, and the only use of the X designation found for this article is the directory entry’s account of the 1953 plan, which names no programme document for it.
Three readings are available and the article does not choose between them.
The X number may have been an allocation that was made and never used. This is the reading the absence of any programme document using it supports, and it would put the X-11 and X-12 in the same category as the reserved-but-unassigned cases the series meets later, such as the X-39, whose reservation the series framing records as never formalised. A designation that exists in the numbering registry and nowhere else is a bookkeeping entry, not a name.
It may have been a test-article designation for the pre-operational vehicles specifically, distinguishing the eight Atlas A articles from the weapon they were prototyping, in the way that an X number legitimately distinguishes a research article from a production one. On this reading the label is doing the job the X series exists for, and its absence from the written record is an accident of a programme that had a perfectly good name already.
Or it may be a later retrofit by compilers rather than a period assignment at all. Inventories of X-vehicles have an incentive to fill gaps, and X-11 and X-12 are gaps that the Atlas A and Atlas B fit neatly. The series has already met one case where a compilation attributes a designation that nomenclature records reportedly deny, in the X-23, which the series framing lists as contested, and the reasoning there applies here.
What the case establishes for the series is narrower than a resolution and more useful than a guess. The previous article’s explanation was that the X-series absorbed a different series wholesale. That explanation is correct for three vehicles and does not extend to this one, which means the broadening of the X-series has at least two mechanisms rather than one. A series that has admitted a sounding rocket, an air-launched missile, an autonomous testbed, and now an intercontinental ballistic missile did not do so by a single decision, and any account that offers one is too tidy. The series’ closing article has to carry both mechanisms and probably more.
The Source Base
The contrast with the previous article is sharp and it is worth stating as a controlled result.
The Navaho record is absent from the defence archive and the Atlas record is present. The X-10 article reports that the Defense Technical Information Center reports registered under the Crossref publisher prefix hold nothing about the Navaho under the project number MX-770, while the adjacent MX-776 yields a report on the RASCAL weapon system, named for its radar scanning link. The same archive holds, for the Atlas, the Flight Test Working Group reports for individual missiles, the multi-volume Difficulties Review of the Atlas booster and its ground support systems, propellant-loading system design, and engine system-test data. Same archive and same kind of record, and the difference is that one programme was cancelled in 1957 and the other flew in its balloon-tank form until 2005. The specific documents are General Dynamics/Astronautics San Diegoca 1961 and its companion flight test reports, the five volumes of General Dynamics San Diego Ca Convair Div 1966, and Peters and Hall 1963 on engine system-test data, with the programme-level history in Rockefeller and Alfred 1960. The narrative of the programme comes from its official histories, Neufeld for the Air Force and Cleary for the launch record at Cape Canaveral, and from NASA’s history of the Centaur in Dawson and Bowles, and the vehicle’s measured structure and pressures come from NASA’s flight report on a later Atlas. Cleary calls the vehicles Series A missiles throughout, and neither Cleary nor Dawson and Bowles uses the X-11 designation.
The aerospace archive holds the discipline rather than the vehicle, and for this article that is the right trade. The keystone is a structural principle, and the shell-buckling and pressure-stabilisation literature is large, contemporary with the design, and directly applicable. The survey holds 872 records from the Technical Reports Server of the National Aeronautics and Space Administration, the NTRS, and the ones that matter most, namely the pressurised-cylinder buckling correlation and the imperfection-sensitivity measurements, are exactly the documents a designer of this vehicle would have had on his desk.
What is thin is the X-11 as such. The designation appears in compilations and the flight record is well attested, but the accessible record concerns the Atlas A rather than a vehicle called X-11, and no programme document found for this article uses the X designation, which only Parsch 2005 applies, to the single-engine and three-engine test vehicles of the 1953 plan. That is the fourth consecutive article in which the X number is an administrative label rather than a name anyone used, and the pattern identified in the previous article now has more instances than the series has counterexamples in this stretch.
The mass data is the specific gap. No empty or propellant mass for the Atlas A itself has been found, so the article uses Atlas D figures throughout and says so wherever they appear. The only Atlas A mass on record is the planned 181,000 pounds of the Series A test missiles, which is
\[\frac{181{,}000}{243{,}000} = 0.745\]of the Series C and D figure in the same source. A vehicle with the same shell and three quarters of the gross mass cannot have had a better structural fraction unless its dry mass fell in proportion, and nothing in the record suggests it did, so the structural fraction used here is probably better than the X-11 achieved and the range figures correspondingly optimistic. That direction is an inference and not a measurement, and its size is unknown.
The survey rests on 5,685 research records drawn from Crossref, the NASA Technical Reports Server and the Defense Technical Information Center, of which 1,194, being 21.0 percent, are report primaries by the identifier rule set out under The Definition of Primary. 73 of the 5,561 dated records, being 1.3 percent, were published between 1946 and 1958, from the MX-774 contract to the last Atlas A flight, while 1,839, being 33.1 percent, date from 2015 or later. The median publication year is 2005, and the records fall into 17 clusters.
The period’s own record is thin in these archives. Of the records from those years, 21 concern rocket propulsion and 18 thin shells and their buckling, while the cluster of the Atlas’s own record holds 0 of them and has no record from the development years at all, so the open literature of the development years is mostly the research around the programme rather than the programme. The programme’s own documents appear later, as flight evaluations of the launch vehicle and as histories, which is why that cluster’s median publication year is 1969.
The Definition of Primary
Primacy is read from the identifier. A record is a report primary when its address is a NASA Technical Reports Server citation or a digital object identifier under the 10.21236 prefix, which Crossref registers for Defense Technical Information Center reports. Of the 1,194 report primaries, 872 are NASA reports and 322 are Defense Technical Information Center reports.
The rule does not reach the journal papers, conference papers and books in which the programme’s engineers and historians published, so 21.0 percent is a lower bound on how much of the survey is first-hand. The official histories and the launch record on which the narrative rests are books and are cited as such.
Thin Subjects
Four subjects that this article’s derivations depend on have thin literatures. Each count below is the number of research records in this survey whose title carries at least one of the listed terms, with a hyphen read as a space.
| Subject | Title terms counted | Records |
|---|---|---|
| the pressure-stabilised propellant tank itself | balloon tank, pressure-stabilized, pressure-stabilised | 10 |
| the one-and-a-half stage arrangement | 1 1/2-stage, stage and a half, one and a half stage | 3 |
| structural mass fraction and the rocket equation | mass fraction, mass ratio, propellant fraction, rocket equation, Tsiolkovsky | 3 |
| reliability inferred from a short flight series | binomial, small sample, few flights, zero failure | 1 |
The keystone is the clearest case. Of the 10 records that name a balloon tank or a pressure-stabilised structure, 3 concern a vehicle, being a bending test of a large pressure-stabilised cylinder, a skin-strain measurement on the Centaur and a foam insulation for pressure-stabilised hydrogen tanks, 6 concern pressure-stabilised beams and arches, and the remaining 1 concerns hydraulic pressure stabilisation for pogo suppression. The structural principle of the Atlas is published under other names, as the buckling of internally pressurised cylinders and as inflatable structure, which is why those two clusters are large while this count is small.
The arrangement and the arithmetic are thinner still. The 3 records naming a one-and-a-half stage vehicle all concern the National Launch System, and of the 3 naming mass fraction, mass ratio or the rocket equation, 1 dates from the Atlas period. That range is governed by the logarithm of the mass ratio is textbook material rather than a research finding, so the article’s central relation stands on the derivation rather than on a literature. The small-sample count of 1 is a study of imperfection fields in welded shells and not of flight reliability, so the binomial reasoning applied above to eight flights has no counterpart among these titles.
What the Survey Admits
A record is admitted only when a person reading its title finds it on this article’s subject, which is the Atlas and the intercontinental ballistic missile programmes it belonged to, the pressure-stabilised thin shell and its buckling, the propellant tank, the loads, dynamics, slosh, pogo and acoustics of ascent, the rocket engines, guidance, the reentry vehicle, the material and its proof test, flight-test reliability, and the launcher line the missile became. Many of this subject’s words also name something else, and a record that shares only such a word is excluded. Atlas also names a detector at CERN, a satellite laser instrument, brain and anatomical atlases, a luggage engine and a journal, and Centaur also names a class of asteroid and an industrial gas turbine. Navaho also names a people and their language, Cape Canaveral is also a coastline studied for its geology and wildlife, and Bossart is also the name of an artist, a marine biologist and an ecologist. Reentry also names a cardiac arrhythmia and the return of prisoners to society, boil-off also names the losses of liquefied natural gas carriers and a textile process, pressure-stabilised also describes chemical compounds formed at high pressure, and Rocketdyne also appears on accelerators, solar receivers and reformers the company built. Missile defence and target tracking, missile proliferation policy, tactical missiles, environmental assessments and the crashworthiness of thin-walled beams are excluded as other subjects. Correction and withdrawal notices, abstract and patent digests, dictionary entries and the indexes of other works are excluded as well, because a survey counts research works and those are editorial events or parts of works. So are trade and press news, book reviews, press kits and the digital heritage deposits of launch sites, which are not research works. A reference or definition entry, a notice such as front matter, an editorial or an announcement, and a second deposit of a document already counted are not admitted either, since none of them is a research work in its own right.
A record whose only link to this subject is aeronautics in general is excluded too, and so is one whose subject is a vehicle or a propulsion class the argument never uses. Aerofoil and wing aerodynamics including aerofoil buffet, the gust load alleviation of flexible aircraft, aircraft engines and drones are such subjects, and so are nuclear, hybrid, electric, electromagnetic and beam-powered propulsion and the propulsion of solid rocket motors as such, from propellant combustion and its instability to grain and motor design. The recovery and landing of a booster or stage is excluded as a subject the argument does not use, while reuse as a design objective or an economic question is admitted, because the argument that the Atlas won the trade of mass against handling cost and then lost it is made in those terms. Launch policy, regulation, acquisition and the operations research of ground processing are excluded, as are plates, beams and lattices that are not shells, and the payloads a missile or launcher carries. The residual cluster on launch vehicle design, programmes and operations admits a title only when it concerns the design, programme history, processing or avionics of a launcher, and not when its subject is any of these excluded ones.
Some records of doubtful relevance are kept. Shell-buckling studies whose application is a storage tank, a submarine hull, an offshore foundation or a pipe, slosh studies of rectangular and horizontal tanks, cryogenic stainless steels developed for magnets and hydrogen service, and the fracture and burst testing of industrial pressure vessels each share a method or a quantity with this subject, so each is kept and a reader may weigh it accordingly. The bridge, wind turbine, stay-cable and solar panel studies cited in the body are kept for their identification, damping and wind-load methods, solid motors appear where their subject is thrust vector control, trajectory, case structure or the dynamics of a missile programme, and the storage studies of liquefied gas at sea because their sentence claims only that they reduce boil-off gas and model insulation.
Every research title has been read for relevance, so the off-topic share that remains is a matter of reading judgement. A reading of titles cannot show that a work is relevant in substance, so this is a statement about titles only.
Epistemic State
Historical fact, well supported. Eight Atlas A vehicles flew from Cape Canaveral between 11 June 1957 and 3 June 1958, five from Launch Complex 14 and three from Launch Complex 12, the first two failing and the third and fourth succeeding by the Cape’s launch history, and three succeeding in all by the official history Cleary 1991 The 6555th, Missile and Space Launches Through 1970. Missile 12A burned for two full minutes and flew some 600 miles downrange, and the official history gives the series’ maximum range and altitude as 600 and 57.5 nautical miles, so the unit of the 12A figure is not settled. The Atlas A booster thrust was raised during the series from 270,000 to 300,000 pounds. The first flight tumbled and the structure held until the range safety officer destroyed it. The MX-774 study contract was awarded in April 1946 and cancelled in July 1947, and the MX-1593 contract was signed on 23 January 1951 Neufeld 1990 The Development of Ballistic Missiles in the United States Air Force, 1945-1960. The programme designation was WS 107A-1 Cleary 1991 The 6555th, Missile and Space Launches Through 1970, and the design authority was Karel Bossart at Convair, who had already used nitrogen pressure in place of stiffeners on MX-774 Dawson and Bowles 2004. The Atlas A flew without a sustainer engine Parsch 2005 Convair B-65/SM-65/CGM-16/HGM-16 Atlas. A later Atlas has pressure-stabilised tanks of 301 extra-full-hard stainless steel between 0.014 and 0.037 inches thick, regulated in flight at 57 to 60 pounds per square inch gauge in the fuel tank and 28.5 to 31 in the oxidizer tank Lewis Research Center 1968. The operational Atlas uses a one-and-a-half stage arrangement in which two booster engines and a skirt are jettisoned and the sustainer continues on the same tanks SM-65 Atlas. The Navaho was terminated by an Air Force Headquarters message of 12 July 1957, thirty-one days after the first Atlas A flight. The first Atlas B flew on 19 July 1958 Cleary 1991 The 6555th, Missile and Space Launches Through 1970.
Reported but from compilations rather than programme documents. The X-11 and X-12 designations for Atlas A and Atlas B, which no programme document found for this article uses and which the directory entry places in a plan of 1953 for single-engine and three-engine test vehicles Parsch 2005 Convair B-65/SM-65/CGM-16/HGM-16 Atlas. The masses used here, which are Atlas D figures, since no Atlas A empty mass has been found SM-65 Atlas. The 282 second specific impulse and the 133 second burn time, against the two full minutes the official history gives. The 341,128 pound booster thrust, which the official history’s 270,000 to 300,000 pounds and the same compilation’s narrative contradict. The flight apogees, which exceed the official series maximum of 57.5 nautical miles on four flights, and the individual outcomes of the last four flights. The failure causes beyond the two the launch history names Convair X-11. The party-balloon inspiration balloon tank. The five pounds per square inch standing pressure, which is the article’s single most quoted number and which rests on secondary compilation rather than on a specification SM-65 Atlas. The Titan I empty masses set against the two-stage comparison, which rest on a single compilation, and the compilation’s Titan I loaded masses, which the operating manual’s tank capacities contradict for the second stage and which are used here only as the alternative HGM-25A Titan I.
The mass substitution is the largest weakness in the quantitative argument and its direction is inferred. The Atlas A was planned at 181,000 pounds against 243,000 for the later test series on the same shell Cleary 1991 The 6555th, Missile and Space Launches Through 1970, so the structural fraction used here is probably better than the fraction the X-11 achieved, and every range figure derived from it is correspondingly optimistic. What the substitution does not affect is the sensitivity, since the range table varies the structure about whatever baseline is chosen, and the two-stage comparison, which is a calculation about configurations rather than about this vehicle.
Engineering analysis, derived here and independently checkable. The radius-to-thickness ratios and the drink-can comparison. The membrane stresses, the fixed hoop-to-axial ratio of two, and the demonstration that the light gauge cannot exist at full pressure. The acceleration head and its ratio to ullage pressure. The classical buckling stresses, the knocked-down allowables, and the sensitivity of every conclusion drawn from them to the choice of knockdown factor. The axial tension from standing pressure, the pressure required to offset buckling, and the finding that the reported five-pound specification is consistent only with a knockdown below about 0.4. The critical bending moment and its independence of thickness. Euler column buckling at 121 times the empty weight. The tank volume, propellant split, and nitrogen mass, giving a structure-to-gas ratio of 103. The common-bulkhead saving. The mass fractions, mass ratio, and ideal velocity. The loss calibration, the range sensitivity table, and the two-stage comparison showing a crossover near an eight and a half percent structural fraction. The Titan I structural fractions derived from tank capacities, the Titan-proportioned vehicle, and the range of the Atlas half-stage rebuilt at the Titan I first-stage fraction. The staging gain of 1044 metres per second. The thrust-to-weight, propellant flow, burn consumption, and axial load factor at cutoff. The maximum dynamic pressure, its occurrence at one scale height, and the aerodynamic bending moment. The acoustic power, sound pressure level, and pressure fluctuation. The slosh frequency. The skin thermal time constant. The Allen and Eggers peak deceleration and its independence of ballistic coefficient. The boil-off rate. The proof and burst factor chain. The tank figure of merit. The orbital comparison. The binomial standard error on the success rate and the demonstration that no trend is detectable across eight flights.
Inference, argued but not established. That the balloon tank and the one-and-a-half stage arrangement reinforce each other and do not trade against each other, which the staging computation supports but does not prove. That the X-11’s keystone being exercised early is why a short flight sufficed, in contrast to the X-10, whose drift rate needed more navigation flights than were completed. That pressure-stabilised vehicles are unusually exposed to pogo because longitudinal stiffness varies with tank pressure. That the design was abandoned because handling cost outlasted the mass-fraction constraint.
A qualification the article makes against itself. The range table compares the Atlas against a heavier version of itself, which is not the comparison a designer in 1951 faced. Setting it against a conventional two-stage vehicle instead puts the crossover near an eight and a half percent structural fraction, and a vehicle built to Titan I proportions, with stages of about 5.0 and 8.5 percent, outranges the Atlas. Rebuilt at the Titan I first-stage fraction, the Atlas half-stage falls short of its range by between a seventh and a fifth. The balloon tank therefore made a single-and-a-half-stage intercontinental vehicle possible without making it the lighter answer, and the article states this in a dedicated section and does not leave the stronger claim standing.
Assumptions made explicit. A flight tank pressure of 60 pounds per square inch, the top of the fuel-tank regulation band recorded for a later Atlas, applied to the heavy gauge, while the oxidizer tank of that Atlas ran at about half, and every membrane stress in the article scales with it directly. Material properties for 301 extra-full-hard stainless steel of 965 megapascals yield, 1276 ultimate, and 193 gigapascals modulus. A knockdown factor of 0.2, whose effect on every conclusion drawn from it is tabulated in a separate section. A tank length of 18 metres, which the tank stations of a later Atlas show to be about thirteen percent long, and a steel density of 8000 kilogrammes per cubic metre. Ten metres of liquid oxygen head at six times gravity. A mixture ratio of 2.25 with propellant densities of 1141 and 800. A jettisoned booster package of three tonnes. A drag coefficient of 1.2 and a uniform wind profile for the standing case. A convective coefficient of 200 watts per square metre kelvin for the skin and 10 for the tank, a specific heat of 500, and a latent heat of 213 kilojoules per kilogramme. An acoustic conversion efficiency of half of one percent. A normal-force slope of two per radian and three degrees of incidence at maximum dynamic pressure. A scale height of 7200 metres and a net acceleration of three metres per second squared for the dynamic-pressure derivation. An entry speed of seven kilometres per second at thirty degrees for the reentry result. A tumble rate of one revolution per second for the first flight. Equal propellant split and equal structural fraction per stage for the two-stage comparison. And the gravity and drag loss of 1337 metres per second, which is calibrated rather than derived and which fixes the first row of the range table by construction.
Where the assumptions matter most. The flight pressure and the knockdown factor carry more of the article than any other input. Every hoop stress, every margin, and the burst chain move linearly with the first, and the compressive allowable, the pressure-to-offset-buckling figure, and the sixty-seven-fold asymmetry all move with the second. The article tabulates the second and does not tabulate the first, which is an asymmetry in the treatment rather than in the physics, and a reader who doubts the sixty-pound figure should scale the membrane results accordingly.
Where information postdates the editorial date. The contemporary literature section is written from current knowledge, and the Atlas V abandonment of the balloon tank in 2002 and the subsequent history are stated from current knowledge rather than from the vantage of 1957.
Out of Scope
The Atlas B, C, D, E, and F, of which the B is the next article. The reentry vehicle and the warhead. The radio-inertial and later all-inertial guidance systems in any depth. Silo and coffin basing. The Atlas as a space launch vehicle beyond noting that it became one. Centaur, which kept the balloon tank and deserves separate treatment. The MX-774 predecessor beyond its role in the origin. Comparative economics against Titan and Minuteman, and the two-stage comparison above is a structural calculation rather than a programme comparison. The Soviet R-7, which solved the same problem with a different configuration entirely and would make the best single comparison this article does not attempt. Manufacturing tooling and the factory, which for a structure of this gauge is a larger subject than the design and which the sources for this article barely touch. The Mercury programme and the man-rating that followed.
Conclusion
The X-11 is a fuel tank that flies. Its skin is thinner in proportion than a drink can, its compressive strength is two hundred times smaller than its tensile strength, and it is held up by a pressure a bicycle tyre would find low. Every one of those facts is a consequence of one relation, which is that the rocket equation returns velocity logarithmically in mass ratio, so a weapon that must reach ten thousand kilometres has to spend its structural budget as though it were the last money it had.
The arithmetic above puts a number on it. Making the structure half as efficient turns an intercontinental missile into an intermediate-range one, and no amount of better engine or better trajectory recovers it. Bossart’s balloon was not a clever trick. It was the only available answer to a question that had been posed in the form of a logarithm.
Closer scrutiny qualifies that. Set against a conventional two-stage vehicle rather than against a heavier Atlas, the crossover sits near an eight and a half percent structural fraction, and a vehicle built to Titan I proportions outranges the Atlas on the same propellant. The balloon tank did not make the intercontinental missile possible. It made this particular intercontinental missile possible without an altitude ignition, at a structural fraction less than a percentage point below the best conventional stage of the period, a margin that costs a half-stage vehicle between a seventh and a fifth of its range, and the field subsequently went the other way and stayed there. Bossart’s answer was right for the vehicle he was building and was not the only answer to the question.
What remains true after all the qualification is the shape of the problem rather than the size of the answer. A weapon specified by range is specified by a logarithm, and a logarithm rewards nothing except mass ratio. Every distinctive feature of this vehicle follows from that and from nothing else. The tank is thin because the logarithm punishes thickness. The tank is pressurised because a thin tank in compression buckles at less than a twenty-fifth of the stress it can carry in tension. The engines are dropped and the tanks are not because the logarithm cares about burnout mass and an altitude ignition was not trusted. The vehicle cannot stand up because none of those decisions left anything over for standing up.
There is a second result, and its subject is the series, not the vehicle. The X-10 could not settle its keystone in five navigation flights and the X-11 tested its keystone completely in its first two minutes, and the difference is that a structural load is applied in full early on every flight while a drift rate is a statistical quantity that needs many flights to estimate. The two vehicles are separated by one designation, the first Atlas A flew thirty-one days before the Navaho was terminated, they were built by rival contractors for the same mission, and the reason one testbed worked and the other did not has nothing to do with either company. It follows from the quantity being measured, and it becomes visible only when the vehicles are read in order.
A last point concerns the tank, which has outlived every argument made about it here. Bossart’s shell is still flying, on Centaur Centaur rocket stage, on the stage that has the strongest possible reason to care about mass and the weakest possible reason to care about being set down empty in a hangar. An idea that was adopted because a weapon needed range, abandoned because a launcher needed convenience, and retained where neither consideration applies has been tested about as thoroughly as an engineering idea can be. It turns out to be right in the conditions where the arithmetic above says it should be, which is not something one can say of many designs that are seventy years old.
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Referenced by
- X-Planes: Synthesis and What the Designation Became 2025-12-16
- X-Planes: Bell Textron X-76 SPRINT 2025-12-15
- X-Planes: X-69 through X-75, the Leapfrogged Block 2025-12-14
- X-Planes: General Atomics X-68 LongShot 2025-12-13
- X-Planes: X-67, the Slot Taken by XQ-67A 2025-12-12
- X-Planes: Boeing X-66 2025-12-11
- X-Planes: Aurora Flight Sciences X-65 CRANE 2025-12-10
- X-Planes: Invocon X-64 2025-12-09
- X-Planes: ABL Space Systems X-63 2025-12-08
- X-Planes: Lockheed Martin X-62 VISTA 2025-12-07
- X-Planes: Dynetics X-61 Gremlins 2025-12-06
- X-Planes: Generation Orbit X-60 2025-12-05
- X-Planes: Lockheed Martin X-59 Quesst 2025-12-04
- X-Planes: X-58, the Slot Taken by XQ-58 2025-12-03
- X-Planes: ESAero X-57 Maxwell 2025-12-02
- X-Planes: Lockheed Martin X-56 2025-12-01
- X-Planes: Lockheed Martin X-55 ACCA 2025-11-30
- X-Planes: Gulfstream X-54 2025-11-29
- X-Planes: Boeing X-53 Active Aeroelastic Wing 2025-11-28
- X-Planes: X-52, the Designation Refused 2025-11-27
- X-Planes: Boeing X-51 Waverider 2025-11-26
- X-Planes: Boeing X-50 Dragonfly 2025-11-25
- X-Planes: Piasecki X-49 SpeedHawk 2025-11-24
- X-Planes: Boeing X-48 2025-11-23
- X-Planes: Northrop Grumman X-47 2025-11-22
- X-Planes: Boeing X-46 2025-11-21
- X-Planes: Boeing X-45 2025-11-20
- X-Planes: X-44, One Designation and Two Aircraft 2025-11-19
- X-Planes: Micro-Craft X-43 Hyper-X 2025-11-18
- X-Planes: Orbital Sciences X-42 2025-11-17
- X-Planes: X-41 Common Aero Vehicle 2025-11-16
- X-Planes: Boeing X-40 2025-11-15
- X-Planes: X-39, Reserved but Never Assigned 2025-11-14
- X-Planes: Scaled Composites X-38 2025-11-13
- X-Planes: Boeing X-37 2025-11-12
- X-Planes: McDonnell Douglas X-36 2025-11-11
- X-Planes: Lockheed Martin X-35 2025-11-10
- X-Planes: Orbital Sciences X-34 2025-11-09
- X-Planes: Lockheed Martin X-33 2025-11-08
- X-Planes: Boeing X-32 2025-11-07
- X-Planes: Rockwell-MBB X-31 2025-11-06
- X-Planes: Rockwell X-30 and the National Aero-Space Plane 2025-11-05
- X-Planes: Grumman X-29 2025-11-04
- X-Planes: Osprey X-28 Sea Skimmer 2025-11-03
- X-Planes: Lockheed X-27 2025-11-02
- X-Planes: Schweizer X-26 Frigate 2025-11-01
- X-Planes: Bensen X-25 2025-10-31
- X-Planes: Martin Marietta X-24 2025-10-30
- X-Planes: Martin Marietta X-23 PRIME and a Contested Assignment 2025-10-29
- X-Planes: Bell X-22 2025-10-28
- X-Planes: Northrop X-21 2025-10-27
- X-Planes: Boeing X-20 Dyna-Soar 2025-10-26
- X-Planes: Curtiss-Wright X-19 2025-10-25
- X-Planes: Hiller X-18 2025-10-24
- X-Planes: Lockheed X-17 2025-10-23
- X-Planes: Bell X-16 2025-10-22
- X-Planes: North American X-15 2025-10-21
- X-Planes: Bell X-14 2025-10-20
- X-Planes: Ryan X-13 Vertijet 2025-10-19
- X-Planes: Convair X-12 2025-10-18