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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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Microwave interferometer system controls the cutting of plastic materials to a prescribed depth. The interferometer is mounted on a carriage with a spindle and cutting tool. A cross slide, mounted on the carriage, allows the interferometer and cutter to move toward or away from the plastic workpiece.
Water depth and slush drag instrumentation
Relationship between binocular depth perception and optical distortion in Apollo pressure suit helmets and visors
Mathematical density-depth model proposed for lunar outermost layer compared to Matveev model, noting Surveyor estimates
Cosmic ray heavy nucleus enders flux by nuclear emulsions for balloon flights at various atmospheric depths
Lunar surface bearing strength from depth of penetration measurements of first impact by Surveyor spacecraft
Differential elastic scattering cross section of Ar nozzle beam in nitrogen considered with rainbow effect in determining intermolecular potential well depth
Well depth determination for weak intermolecular potentials based on dimerization enthalpy measurement of rare gas atoms by mass spectrometry
Nondestructive noncontacting microwave depth measurement of thin slits and cracks in metal surfaces
Liquid He II, determining correlation of depth effect on film boiling heat transfer with vapor film geometry from motion pictures
Aerial photography of water wave refraction for depth determination
Shallow ocean depth measurements by aerial photographs of wave refraction and wavelength changes and by multispectral scanning of wave reflection
Pure superconducting Al wire surface inductance measurement as function of temperature, noting penetration depth value
Small lunar and terrestrial craters, determining impact or volcanic origin by depth-diameter ratio
Depth profiles of cosmogenic radionuclides in lunar rocks and soil samples from Apollo 11 and 12 flights, considering solar particle flux and spectra
Tritium and argon radioactivities and depth variations in Apollo 12 rocks, discussing solar flare and cosmic ray exposure ages
Electromechanical system for Howard-Dolman device was developed. System is used for human depth perception measurements without tactual stimuli.
Calculations have been made using the nucleon-meson transport code NMTC to estimate the absorbed dose and dose equivalent distributions in astronauts inside space vehicles bombarded by solar flare and Van Allen protons. A spherical shell shield of specific radius and thickness with a 30-cm-diam. tissue ball at the geometric center was used to simulate the spacecraft-astronaut configuration. The absorbed dose and the dose equivalent from primary protons, secondary protons, heavy nuclei, charged pions, muons, photons, and positrons and electrons are given as a function of depth in the tissue phantom. Results are given for solar flare protons with a characteristic rigidity of 100 MV and for Van Allen protons in a 240-nautical-mile circular orbit at 30 degree inclination angle incident on both 20-g/sq cm-thick aluminum and polyethylene spherical shell shields.