Results 191 to 200 of about 2,387,085 (259)
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Blunt-Body Heat Transfer at Hypersonic Speed and Low Reynolds Numbers
, 1961with the computed value given by the analysis of Fay and Riddell using the actual measured pressure gradient which, in turn, agrees with the modified Newtonian formula; therefore, the analytical results are made nondimensional with respect to the value ...
A. Ferri
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On the Flow Past a Sphere at Hypersonic Speed with a Magnetic Field
, 1959Heat Transfer and Recovery Factor in a Laminar Boundary Layer With Arbitrary Pressure Gradient and Wall Temperature Distribution BERNARD L E F U R 682 An Alternative Formulation of the Problem of Flutter in Real Fluids. W E N H W A C H U AND H.
N. C. Freeman
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Unsteady Boundary‐Layer Induced Pressures at Hypersonic Speed
, 1971The first‐order transient contribution to the strong‐interaction induced pressure has been obtained for a suddenly accelerated semi‐infinite flat plate moving at hypersonic speed and zero angle of attack. The unsteady compressible laminar two‐dimensional
R. Gupta, C. M. Rodkiewicz
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Terminal Adaptive Guidance for Autonomous Hypersonic Strike Weapons via Reinforcement Learning
Journal of Spacecraft and Rockets, 2021An adaptive guidance system suitable for the terminal phase trajectory of a hypersonic strike weapon is optimized using reinforcement meta learning. The guidance system maps observations directly to commanded bank angle, angle of attack, and sideslip ...
B. Gaudet, R. Furfaro
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High Speed and Hypersonic Science and Technology
41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005Throughout modern history, aviation and, most recently, space have been pivotal to this nation’s ability to defend freedom and democracy. Over the years our foundational science and technology efforts have focused upon building strong aeronautics and space capability independently.
Ronald Sega+2 more
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Incipient separation on flared bodies at hypersonic speeds
The Aeronautical Journal, 1999AbstractThe aerodynamic effectiveness of a cylinder-flare body at zero incidence under laminar and turbulent boundary-layer conditions has been studied experimentally. Two nose geometries, namely a 10° half-angle sharp cone and a hemisphere, were used.
Kontis, Konstantinos, Stollery, JL
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Simulation of an orbiter separation maneuver at hypersonic speed [PDF]
The separation maneuver of an idealized twostage hypersonic vehicle is aerodynamical ly investigated. This paper gives a contribution to the calculation of unsteady flowfields arising from a realistic separation maneuver. The aerodynamic calculations are based on a finite-volume-method for solutions of the two-dimensional unsteady Eulerand Navier ...
Thomas Cvrlje, Boris Laschka
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Technology Development for High Speed/Hypersonic Applications
AIAA/CIRA 13th International Space Planes and Hypersonics Systems and Technologies Conference, 2005The United States Air Force (USAF) and National Aeronautics and Space Administration (NASA) have jointly sponsored a study of technology development requirements for high speed/hypersonic airbreathing systems in preparation for initiating a National Aerospace Initiative (NAI) program.
Brian Zuchowski+3 more
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Control effectiveness of a jet-slender body combination at hypersonic speeds
14th Applied Aerodynamics Conference, 1996The effects of jet control on the aerodynamic characteristics, performance, and stability of a 5-deg semiangle slender conemissilecone guration arestudied. Tests were made in theCrane eld University College of Aeronautics hypersonicgun tunnelusingboth sharp and blunted cones. Thestudywasconducted at a Mach number of 8.2and a Reynolds number of 392 700,
Kontis, Konstantinos, Stollery, JL
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Pitch-damping coefficients at hypersonic speeds.
AIAA Journal, 1968Equation (A6) may be recognized as the Mathieu equation; two of the zones of parametric resonance determined by this equation are shown in Fig. 6 (zones A and B in the figure). Such zones define regions where the solutions of Eq. (A6) exhibit an exponential growth of the form e^. The iso-ju lines shown in the figure connect points of equal growth rate,
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