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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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Metal flame spray coating prevents EMF measurement error in sheathed instrumentation cables which are externally attached to cylinders which were cooled on the inside, but exposed to gamma radiation on the outside. The coating provides a thermoconductive path for radiation induced high temperatures within the cables.
Ceramic insulated, swaged stainless steel, sheathed, protective atmosphere cable admits electrical leads into an 1800 deg F air-environment test chamber. The cable has some bending capability and provides for nine niobium alloy conductors. An argon purge during the TIG weld closure protects internal wires from oxidation and embrittlement.
Tungsten-rhenium alloy thermocouples, specifically, insulated, sheathed W/W plus 26Re and W plus 5 Re/W plus 26 Re thermocouples, are effective for temperature measurement in excess of 2920 degrees C. These thermocouples have a high thermoelectric output and excellent relationship to temperatures up to 2760 degrees C.
Connector plug automatically minimizes arcing during mating and demating. This plug uses a high-resistivity outer sheath as an extension to the regular pin contact. It is used in atmospheres containing explosive gases, and reduces erosion at the contact surfaces where mating and demating are performed frequently.
Plasma compressibility, plasma anisotropy, and vacuum sheath effects on antenna admittance in ionosphere
Plasma sheath effect on reentry communication system with slot antennas
Dependence of tungsten electrode work functions on positive ion sheaths between electrodes and cesium plasmas
Direct nuclear reactor radiation exposure effects on sheathed Chromel-Alumel and iron-Constantan thermocouples
Near field characteristics of finite cylindrical antenna enclosed by long plasma sheath column, solving integral equations determining current distribution
Volt-ampere characteristic anomaly observed in cylindrical Langmuir probe on Explorer 17 satellite, discussing applications to plasma sheath, ion temperature and mass distribution
Driven oscillations of electron plasma with sheath described by driven normal mode model
Alkali vapor arc plasma oscillations in neighborhood of anode, developing theory of anode sheath
Sheaths for pulse-echo ultrasonic temperature sensor
Numerical values for cylindrical antenna admittance in uniaxial plasma, considering plasma compressibility and vacuum sheath
Backscattering due to collisions for electrons from emitter accelerated through positive ion sheath into plasma in thermionic diodes
Establishing an arc between water-cooled tungsten-tipped electrodes, maintaining the arc along the centerline of a central jet of argon gas, and surrounding the argon jet with a coaxial sheath of nitrogen stabilizes operation of a low-frequency ac electric arc.
RTV silicone is used with a braided wire sheath surrounding the metal bellows in fluid transfer systems. It demonstrated best overall performance in flexibility and shock absorbing tests, high temperature, low temperature, and salt spray.
Mixing and temperature measurements on argon plasma operating as heater for surrounding sheath of air or hydrogen