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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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Improved correlation function in Kirchhoff- Huygen method of solution of scattering of waves from statistically rough surfaces
Ronchi test is applied to measure microscopic variations in surface roughness or flatness of metallized test specimens. Light is projected through a diffraction grating onto the test specimen, and the light reflected from the specimen is viewed or photographed through the grating.
Cross polarization technique for radar exploration of surface properties of rough targets such as moon
Dynamic model investigation of rough-water landing characteristics of Gemini-type spacecraft
Errors in estimates of lunar crater slope angles and surface roughness in Ranger VII and Ranger VIII pictures due to interpretation of dark areas as shadows
Steady state thermal conductance coefficient at interface formed by nominally-flat rough contacting surface placed in vacuum environment
Bistatic scattering from statistically rough surfaces with emphasis on lunar-like surfaces
Air flow heat transfer in annular channels with resistance provided by aperture roughness
Geometric optics approach to calculating surface roughness effects on microwave emissivity from Moon and Venus
Surface roughness and waviness effects on thermal resistance between contacting solids
Surface roughness length analysis of 150 meter meteorological tower at Cape Kennedy launch complex
Surface roughness effects on normal spectral emittance of vapor deposited rhenium
Heat transfer effect on drag due to surface roughness in supersonic turbulent boundary layer
Directional distributions of thermal radiation emittance measured for influence of surface roughness of electric nonconductor
Rough metal surface bidirectional reflectance, using Davies and Beckmann models
Rough surface scattering on communication link using isotropic antennas, noting fading characteristics
Surface roughness effect on heat transfer to hydrogen gas turbulent flow in round cross section tubes, noting heat transfer coefficient increase
Chemical reaction heater for Mars rough-landing capsule