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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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Low-speed longitudinal static stability & control characteristics of aircraft with swept wings & tail surfaces outboard of wing tips
Pressure, heat transfer & force distribution on slab delta wing in air and helium hypersonic flow
Aerodynamic characteristics of aircraft configuration for low level supersonic attack tested in transonic wind tunnel
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Vortex lattice is used to describe the lifting surface of an arbitrary wing planform in steady potential subsonic compressible flow in computer program which calculates wing aerodynamic characteristics. Estimates of flow field characteristics in the vicinity of a lifting wing can also be programmed.
Windshield and nose geometry effects on supersonic aerodynamic characteristics of tactical fighter model
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Low speed static and dynamic longitudinal, and lateral stability of scale model of supersonic transport in wind tunnel tests
Large scale wind tunnel tests to improve longitudinal stability of supersonic transports with variable swept wings
Influence of high turbine inlet temperature and take off jet noise on methane fueled supersonic transport with variable swept wings
Operating principle and functional automatic circuit for stroboscopic oscillograph control
Monopole mass spectrometer mass range extension by voltage method, discussing sensitivity and mass scan time
Technique for improving quality and acquisition of frequency response and vibration data
Solution of trajectory optimization problems by calculus of variations, dynamic programming, and Pontryagin's Principle
Jupiter's electron and proton radiation belts were analyzed, with particular reference to the effect of its five inner satellites, located within its magnetosphere. The characteristics of trapped electrons and protons with a magnetic moment of 50 MeV/gauss, considered typical at Jupiter, were calculated. The mean absorption time before impact was calculated for particles located at the radial distance of each of the satellites. A characteristic diffusion time near each satellite was calculated, assuming violation of the third invariant due to magnetic fluctuations associated with fluctuations in the solar wind. This diffusion time was found to be long compared with the absorption lifetimes at Europa and Amalthea.
The low-speed characteristics of a large-scale model of the U. S. Navy/Grumman F-14A aircraft were studied in tests conducted in the Ames Research Center 40- by 80-Foot Wind Tunnel. The primary purpose of the program was the determination of lift and stability levels and landing approach attitude of the aircraft in its high-lift configuration. Tests were conducted at wing angles of attack between minus 2 deg and 30 deg with zero yaw. Data were taken at Reynolds numbers ranging from 3.48 million to 9.64 million based on a wing mean aerodynamic chord of 7.36 ft. The model configuration was changed as required to show the effects of glove slat, wing slat leading-edge radius, cold flow ducting, flap deflection, direct lift control (spoilers), horizontal tail, speed brake, landing gear and missiles.