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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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Gage permits determination of stagnation conductivity from measurement of shunt impedance presented by the plasma between the inner and outer conductors of a segment of coaxial transmission line. Response of gage permits its use in shock-tube work and research on explosive propagation.
Bistable control valve is selectively switched by direct application of an electrical field to divert fluid from one output channel to another. Valve is inexpensive, has no moving parts, and operates on fluids which are relatively poor electrical conductors.
Gold-nickel brazing alloy, with 5 percent indium added to depress the melting point, is used for brazing of nickel-clad silver electrical conductors which operate at temperatures to 1200 deg F. Alloy has low resistivity, requires no flux, and is less corrosive than other gold-nickel, gold-copper alloys.
Liquid metal conductor confined between two concentric cylindrical electrodes
The Second Workshop on Voltage Breakdown in Electronic Equipment at Low Air Pressure was sponsored by the Jet Propulsion Laboratory, Pasadena, California. It has been three and one-half years since the convening of the first workshop on voltage breakdown. In this interval, gains are evidenced in the progress and sophistication in solving voltage breakdown problems affecting electronic equipment operating at high altitudes or other low air pressure environments. Although space applications predominate the area of concern, other projects such as the SST are becoming increasingly involved with voltage breakdown. High-voltage breakdown in spacecraft continues; however, the incidences of occurrence appear to have decreased in spite of an increase in the number of missions flown. This, it is felt, is due to many project managers now requiring all equipment with voltage in excess of 270-V peak to be designed to operate in the critical pressure region without damage, even though its normal functional environment is sea level pressure and the hard vacuum of space. In addition, designers are becoming more aware of the principle of good high-voltage design by selecting void-free components, proper spacing of conductors, isolating high-voltage circuitry from lower voltage areas, etc. The consensus seems to be that the slight increase in cost to achieve a provable corona-free design is more than offset by the increase in confidence that the equipment will survive accidental loss of vacuum during high-vacuum tests, inadvertent turn on while passing through the critical air-pressure region of earth after launch or outgassing in flight pressurizing the enclosure into the critical pressure region.
Conductor to terminal soldering and printed circuit soldering for Earth Resources Technology Satellite
Treatment of conductor surfaces and effects of surface roughness and surface structure on attenuation of waveguides in millimeter waves
Reliability studies of thick film products including resistors, capacitors, and conductors
Electrodeless electrolysis of solid ionic conductors and fused salts without contact leads, using electron beams and glow discharge
Device tests electric continuity of flat cable conductors, FCC, in temperature controlled environment. Test method is described.
Stripper removes insulation to any desired depth by adjusting the distance between the blade and the plates on either side of the flat conductor cable, FCC.
Method of making molded electric connector for use with flat conductor cables
Support for flexible conductor cable between drawers or racks holding electronic equipment and cabinet assembly housing drawers or racks
Conductor for connecting parallel cells into submodules in series to form solar cell matrix
Design and development of device for cooling inner conductor of coaxial cable
Development of calorimeter for spacecraft batteries comprising pressurized vessel, heat sink, and copper conductor
Shielded flat conductor cable fabricated by electroless and electrolytic plating
Fabrication and environmental tests of circuit boards with polyimide plastic dielectrics and pyrolyzed polyacrylonitrile conductors