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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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Two-wavelength microwave radiometer to measure temperature and heat exchange at sea surface through heavy overcast for use in manned satellites - oceanography
Correlation of physical property laboratory and in situ analog measurements of lunar soil
Upper ionospheric electron density measurement by signals propagated between two parts of high altitude rocket
Flux-mass distribution of zodiacal dust particles near Mars measured by Mariner IV space probe
Martian magnetic dipole measurements from magnetometer aboard Mariner IV space probe
Spark current flow velocity measurement in hypersonic tracer stream
Brownian motion under micrometeorite impact effects on accuracy of spacecraft measurements of Einstein light bending
Upper ionospheric electron density measurement by signals propagated between two parts of high altitude rocket
Emittance measurements of space suit face shield and test chip
Solar reflectance measurements on coated polysulfane space suit material
Atmospheric density measured by Explorer 17 density gauges, and error analysis
IR directional and hemispherical emittance of spacecraft thermal control coatings, comparing values determined by various measurement techniques
Electron density measurements by partial reflection and rocket techniques during 20 May 1966 solar eclipse, showing agreement below 82 km height
Coherent light beam device and method for measuring gas density in vacuum chambers
Stellar proper motion measurement by densitometer automatic scanning of star plates pairs, assessing accuracy
An investigation of spatial irregularity of VLF phase due to nearby objects and terrain is discussed. It is shown that the phase is regular to the microsecond accuracy of the instrumentation, and that a grounded steel tower in close proximity to a whip antenna will not affect the phase measurement. However, antennas coupling to trees may cause an anomalous phase shift.
In order to verify the ultraviolet absorption technique used in the Global Atmospheric Sampling Program, two flight experiments were conducted employing several techniques, both in situ and remote, for measuring atmospheric ozone. The first experiment used the NASA CV-990 equipped with an ultraviolet absorption ozone monitor and an ultraviolet spectrophotometer, a balloon ozonesonde, and a Dobson station for determining and comparing the ozone concentration data. A second experiment compared ozone data from an automated sampling system aboard a B-747 with data from a manned system installed on the NASA CV-990 during a cross-country flight with both aircraft following the same flight path separated by 32 kilometers.
A description of both the mean and the fluctuating components of the flow, and of the Reynolds stress as observed using a dual forward scattering laser-Doppler velocimeter is presented. A detailed description of the instrument and of the data analysis techniques were included in order to fully document the data. A detailed comparison was made between the laser-Doppler results and those presented in Part 1, and an assessment was made of the ability of the laser-Doppler velocimeter to measure the details of the flows involved.