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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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Composite plate of fine steel wires imbedded in an aluminum alloy matrix results in a lightweight material with high tensile strength. Plates have been prepared having the strength of titanium with only 85 percent of its density.
Copper wire for electrical harnesses, when plated with both nickel and silver, resists galvanic corrosion and high temperatures while maintaining electrical properties and solderability.
Slip ring lead wires composed of ternary alloys of silver, have high electrical conductivity, a tensile strength of at least 30,000 psi, high ductility, and are solderable and weldable. An unexpected advantage of these alloys is their resistance to discoloration on heating in air.
Exploding Bridge Wire /EBW/ is treated as a transmission line system and pulse reflection techniques are used for checking the electrical integrity of an EBW cartridge. A step voltage is propagated into the system and the reflected voltage waves are monitored.
Visual inspection criteria assure the metallurgical integrity of spot welds joining nickel leads and nickel ribbon in a 90 degree cross-wire configuration.
Wire material /Inconel/ having high friction and low wear characteristics, reduces vibratory stress and prevents compressor blade failure.
Method to coat the edges of flat ribbon wire is devised by using enamel with modified flow properties due to addition of 2 to 4 percent silicon. Conventional coating procedes several edge coatings to minimize oxidation and additional conventional coats are applied after edge coating to build up thickness.
Prediction of heat, mass, species, and momentum fluxes in a space vehicle and aerodynamic noise production by supersonic jet and rocket exhausts requires a predictability of the associated turbulence fields. The hot wire is a technique that will allow an experimental determination of turbulent properties.
Critical heat fluxes for water and ethyl alcohol boiling at saturated conditions from vertical and horizontal electrically heated platinum wires in reduced gravity
Insulation resistance of spacecraft wiring against abrasion, radiation effects, oxygen environment, and extrusion lubricants
Effect of cooling rate on ductile-brittle bend-transition temperature of chromium wire
Superconductivity of composite of fine niobium wire in copper, measuring critical temperature, transverse magnetic field, current density, etc
Quenching and slow-cooling effects on ductile- brittle bend-transition temperature of chromium wire
Water vapor effects on burning rate of aluminum and magnesium wires at atmospheric pressure
Stress rupture properties of tungsten wire at high temperatures, noting effect of primary recrystallization on microhardness, ductility and grain size
Evaluation of cross-wire resistance welded joints used in electronic assemblies for aerospace applications
Interplanetary dust particle flux measured by Explorer XVI cadmium sulfide and wire grid dust particle detectors
Explorer XVI cadmium sulfide and wire grid dust particle detector measurements of interplanetary dust particle flux