Ion propulsion for space flight.
Electric propulsion systems for rocket vehicles, particularly dynamics and flight mechanics of ion motor
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Electric propulsion systems for rocket vehicles, particularly dynamics and flight mechanics of ion motor
Design of baffles to damp liquid propellants in rocket vehicles
Mechanical property evaluation, and functional tests of thermal insulation for liquid hydrogen tank of nuclear engine for rocket vehicle
Flight vibration data of Astrobee 1500 rocket vehicle
Cost versus weight optimization for multistage rocket vehicles
Design and flight test data on Super Loki Dart sounding rocket system for obtaining high altitude wind profiles with low cost rocket vehicle and radar-reflective chaff payload
Optimal thrust programming of single stage rocket vehicle for maximum payoff at end conditions using Lagrange multipliers for singular arc
Onboard computer equations for rocket vehicle guidance to elliptical orbit, discussing iteration absence from computations and digital simulation results
Computational method for time optimal space rendezvous between rocket vehicle and circular orbit target
Ballistically effective atmospheric parameters for rocket vehicle design manuals involving application of climatological concepts of meteorology
Branched trajectory optimization for split rocket vehicles using projected gradient or steepest descent method
Gaseous nuclear rocket technology studies for application to nuclear engines for rocket vehicles
Flight performance of high resolution spectrometer in Aerobee rocket vehicle
Optimal control for rocket vehicle in three dimensional central force field
Attitude and propellant flow control system for liquid propellant rocket vehicles
Many liquid-propellant rocket vehicles have experienced longitudinal vibration, nicknamed pogo after the jumping stick, due to an instability arising from interaction of the vehicle structure with the propulsion system. These vibrations can produce an intolerable environment for astronauts and equipment, can overload vehicle structure, and can lead to loss of propulsion performance. A NASA monograph concerned with the prevention of pogo is well on its way toward publication and should serve as a useful guide to design for the Space Shuttle. The paper will briefly describe the nature of the pogo phenomenon, present a summary of past instabilities, relate the possible deleterious effects of pogo, and discuss the contents of the design criteria monograph. Finally, research tasks are recommended for support of pogo development activities on the Space Shuttle.
Hydraulic support equipment for full scale dynamic testing of large rocket vehicle under free flight conditions
Branched trajectory optimization for split rocket vehicles using projected gradient or steepest descent method