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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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Nighttime variations of F region electron density profiles at Puerto Rico, discussing seasonal and solar cycle variations in temperature and vertical drift velocity
Diurnal variations of neutral and charged particle temperatures in equatorial F region
Spin-other-orbit matrix elements for F super 3 electron configurations
Solar X ray bursts observed by proportional counter on IMP-F satellite to correlate optical H alpha flares and radio bursts
Ion drag effects on acoustic gravity waves propagation in isothermal F region, discussing indicated wave damping
Rocket measurements of upper F region electron temperature and density profiles, for particle and energy balance of ionosphere topside, noting diffusive equilibrium
Simultaneous solution of continuity and heat conduction equations for ionospheric electrons, ions and neutral species for studying F region magnetic storm behavior
Atomic oxygen density role in ionospheric E and F region magnetic stability, noting heat loss effect of atomic excitation
Jet engine compressor stalls in-flight investigation up to Mach 2 on F-111A by pressure sensors, noting steady state distortion role
Mean lives of 1s super 2 2p super 2 super 1D level in F VI and O V measured by beam foil technique
Radiative recombination of atomic oxygen ions in nighttime F region UV radiation detected by polar-orbiting OGO 4 satellite
Oxygen concentration effects on oxidation of synthetic paraffinic and type II ester lubricants determined from ball bearing tests at 400 and 450 degrees F
OGO-F neutron monitor for measuring cosmic ray neutron flux near earth, locating sensor on boom to minimize spacecraft produced neutrons
Gas-surface energy transfer experiment on OGO-F satellite, measuring upper atmosphere kinetic energy flux to determine accommodation and drag coefficients, density, etc
Intersatellite microwave laser communication system for ATS-F and ATS-G, discussing experiment, functional design and parameters
Saturn F-1 rocket engine as generator of infrasonic waves and magnetic fluctuations, noting ignition and cut-off signal characteristics.
Improved technique calibrates piezoelectric accelerometers throughout temperature range from ambient to -450 degrees F. Method employs liquid helium as coolant, a cryogenic temperature chamber, a vibration measurement system, and a temperature measurement system.
Superalloy has 1000-hour strength of 37,000 psi at 2000 degrees F. The strength to density ratio of the composite is also greater, permitting applications where reduced weight rather than greater strength is desired.