System controls challenges of hypersonic combined-cycle engine powered vehicles [PDF]
Hypersonic aircraft with air-breathing engines have been described as the most complex and challenging air/space vehicle designs ever attempted. This is particularly true for aircraft designed to accelerate to orbital velocities.
Ianculescu, George D. +1 more
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Active cooling from the sixties to NASP [PDF]
Vehicles, such as the X-15 or National Aero-Space Plane, traveling at hypersonic speeds through the earth's atmosphere experience aerodynamic heating. The heating can be severe enough that a thermal protection system is required to limit the temperature ...
Blosser, Max L., Kelly, H. Neale
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Compressive sensing adaptation for polynomial chaos expansions
, 2018 Basis adaptation in Homogeneous Chaos spaces rely on a suitable rotation of the underlying Gaussian germ. Several rotations have been proposed in the literature resulting in adaptations with different convergence properties.
Ghanem, Roger G. +7 more
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Hypersonic propulsion research [PDF]
The development of technology for the modular airframe integrated scramjet has been the focus of hypersonic propulsion research for several years. An part of this research, a variety of inlet concepts have been explored and characterized. The emphasis of
Northam, G. Burton
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Numerical Simulation of Supersonic Flow through Scramjet Intake with Concavity in Cowl Surface
Journal of Applied Fluid Mechanics, 2020 Scramjet intake usually employs shock waves to reduce the flow velocity and increases the static pressure of the flow. However, this causes flow separation and multiple reflections of shock waves, which result in total pressure loss for the flow.
P. Senthilkumar, T. M. Muruganandam
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Optimization and guidance of flight trajectories for the national aerospace plane [PDF]
The research on optimal trajectories for the National Aerospace Plane (NASP) performed by the Aero-Astronautics Group of Rice University from June 22, 1989 to December 31, 1990 is summarized.
Miele, Angelo
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Research and Development of Hydrogen-Fueled Internal Combustion Engines in China. [PDF]
ACS Omega, 2023 Wang L +5 more
europepmc +1 more source
Scramjet nozzle design and analysis as applied to a highly integrated hypersonic research airplane [PDF]
Engine-nozzle airframe integration at hypersonic speeds was conducted by using a high-speed research aircraft concept as a focus. Recently developed techniques for analysis of scramjet-nozzle exhaust flows provide a realistic analysis of complex forces ...
Johnston, P. J. +2 more
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Trajectory optimization and guidance law development for national aerospace plane applications [PDF]
The work completed to date is comprised of the following: a simple vehicle model representative of the aerospace plane concept in the hypersonic flight regime, fuel-optimal climb profiles for the unconstrained and dynamic pressure constrained cases ...
Calise, A. J. +2 more
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Secondary Flow Effect on Supercritical Kerosene Oxidation Deposition and Heat Transfer in a Coiled Tube. [PDF]
ACS Omega, 2022 Pei X, Tian H, Zheng Z, Wang Y, Hou L.
europepmc +1 more source