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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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Vacuum chamber apparatus opens sealed canisters of irradiated gases and transfers the contents without contaminating the surrounding area, and without diluting or polluting the contained gases. The apparatus consists of the chamber, a valved piping manifold, and a special drill and sealed drilling access.
Modified gloved enclosure is used to fill a capsule with a mixture of americium and beryllium radioactive powders to seal weld the opening, and to test it for leaks. It contains a horizontal partition, vortex mixer, mounting press, welder, test vessel, and radiation shielding to prevent surface contamination.
Piezoelectric quartz crystals detect condensable gas contaminants backstreaming into a vacuum chamber when a pump is evacuating the chamber. One crystal acts as a thermometer, the other detects mass change. They are energized by electronic equipment which records frequency changes.
Properly programmed combination of advanced chemical and physical analytical techniques characterize critically all trace contaminants in both the potable and waste water from the Apollo Command Module. This methodology can also be applied to the investigation of the source of water pollution.
Sampling device obtains pure subsurface soil that is free of any foreign substance that may exist on the surface. It is introduced through a contaminated surface area in a closed condition, opened, and a subsurface sample collected, sealed while in the subsurface position, and then withdrawn.
Effectiveness of dry heat and ethylene oxide gas on spore contamination located between mated surfaces and on exterior surfaces of materials
Contamination exposures of columbium, zirconium, and tantalum alloys under conditions of low pressures and high temperatures
Laminar flow clean room efficiency for viable contamination cleanup
Stallwood jet and DC arc in analysis of air contamination in inert gases
Proton-irradiation darkening of rock powders, noting contamination, temperature effects and applications to solar wind darkening of moon
Two-dimensional diffusion model for gas propagation in lunar atmosphere, discussing contamination by lunar module exhaust gases and solar wind loss mechanism
Monitoring device detects and indicates directly the amount of contamination deposited on a surface. It uses an optical system in conjunction with a reliable collimated light source and associated electronics. Change in its output signal is proportional to change in the optical absorption characteristics of the sample plate surface.
Silicon carbide, insensitive to visible light, is used in photodetectors. System contamination can be monitored during the normal operation without interference to the operator, and without shielding from ambient light.
Cell culture method of screening contaminants which may appear in manned spacecraft
Electromagnetic absorption and scattering by contaminants from Apollo spacecraft
Trace contaminant identification using microwave double resonance spectroscopy
Methodology of measuring internal contamination in spacecraft hardware
Contaminant controls and cleaning procedures in SNAP-8 simulation loop of liquid metals