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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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Radiometric receiver system, which measures noise temperatures in degrees Kelvin, does not require cryogenic noise sources for routine operation. It eliminates radiometer calibration errors associated with RF attenuation measurements. Calibrated noise source is required only for laboratory adjustment and calibration.
Technique for measuring partial pressures utilizes extremely large resonance scattering cross section of xenon at 1471 angstroms to scatter light in a vacuum cell. Output signal of ultraviolet-sensitive photodetector is proportional to the partial pressure and to the rate of inleakage of xenon probe gas.
Relativistic approximation for valence bands in cubic lattices, and photoemission changes of silver bromide during cooling
Linear transformation method for random data vector reduction by matrix algebra
Intensities and widths of Jupiter belts
Electromagnetic drifts and neutral air winds effects on F 2 region derived from electron continuity equation, using Jacchia model atmosphere
Linear transformation for random-data vector z reduction to smaller dimension vector
Steady, ambipolar, low and high speed plasma transport equations developed for terrestrial ionosphere, discussing boundary conditions for supersonic and subsonic flows
Lunar near surface gravity estimation by mass density model for agreement between Doppler tracking data from Lunar Orbiter and trajectory predictions
ATS attitude stabilization boom packages, describing torque transmission, drum synchronization, electrical isolation, lubrication, etc
Statistical properties of subtropical jet stream maxima over U.S. from Nimbus II IR radiometry
Stable midlatitude red arc observation by Alouette 2 satellite for electron temperature and density structure measurement, calculating intensity and extent
Coronal streamers structure and evolution from photographic and K-coronameter data, indicating photospheric bipolar magnetic regions as origin
Crash locater is automatically ejected from aircraft at time of crash and begins transmitting at emergency radio frequencies monitored by all airports and airport control towers. Advantages are smaller size, simpler design and installation, extended transmitting range and life, greater deployment reliability and increased crash resistance.
Airborne infrared radiometer sensing of thermal terrain properties in California lake region
Analyzing subaerial flows of lava in eastern Iceland and recent and Pleistocene flows in neovolcanic zone of central Iceland for basalt composition
OAO 2 satellite used to obtain far ultraviolet spectrum scans of early-type supergiants