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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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Sniffer type portable monitor detects hydrogen in air, oxygen, nitrogen, or helium. It indicates the presence of hydrogen in contact with activated palladium black by a change in color of a thermochromic paint, and indicates the quantity of hydrogen by a sensor probe and continuous readout.
Portable spectrometer to measure oxygen and hydrogen in tungsten gas arc welding process
Descriptions of portable spectrophotometer and reflectometer for color measurement
Portable induction brazing system for aerospace applications
Portable helium detector measuring helium leak rates makes possible the use of the inert gas helium as a tracer. This helps solve safety and contamination problems in detecting leaks in closed fluid systems.
Portable fixture facilitates pressure testing to detect possible leaks in instrumentation fittings mounted on tank bulkheads. It uses a vacuum cup which seals a pressure regulator adapter around one side of the fitting to be pressure tested. Leakage is detected with a gas sniffer.
Portable weld tool makes weld repairs out-of-station and on the side opposite the original weld. It provides full automatic control of the arc voltage, current, wire feed, and electrode travel speed in all welding attitudes. The device is readily adaptable to commercially available straight polarity dc weld packs.
Portable spectrometer using photosensitive readouts, monitors the amount of oxygen and hydrogen in the inert gas shield of a tungsten-inert gas welding process. A fiber optic bundle transmits the light from the welding arc to the spectrometer.
Lightweight, portable, variable-speed routing skate is used on heavy metal subassemblies which are impractical to move to a stationary machine. The assembly, consisting of the housing with rollers, router, and driving mechanism with transmission, weighs about forty pounds. Both speed and depth of cut are adjustable.
Portable bonding oven is formed to any desired size or configuration to attach doublers and brackets to the surfaces of large structures. A radiant heat source is used in combination with a heat resistant transport vacuum bag and a black heat absorbing cloth.
Portable sonomicrometer for measuring heart dimensions
Portable differential ball gauge to measure internal flare angle of flared tubing
Portable, simple sonomicrometer capable of measuring organ dimensions in conscious dog
Small portable, high intensity isotopic neutron source combines twelve curium-americium beryllium sources. This high intensity of neutrons, with a flux which slowly decreases at a known rate, provides for increased experimental accuracy.
Portable laser heterodyne system for broadband measurement of structural vibrations and calibration of electromechanical transducers
Portable spectrometer for monitoring oxygen and hydrogen as free gas or as dissociation products in inert gas shield of gas tungsten arc welding process
Portable automatic calibration tracker to improve angular calibration of antennas and radio satellite tracking systems in STADAN /Satellite Tracking Network/
Portable multichannel aerosol particle analyzer based on light scattering, discussing concentration and size distribution measurements during space flight