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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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Low heat-transfer gage facilitates determination of the transition between laminar and turbulent conditions, in the boundary layer surrounding slender and moderately slender cones under test in a hypersonic blowdown helium tunnel. The gage consists of a thin layer of vacuum-evaporated platinum on a heat resistant glass substrate contoured to fit model surfaces.
Rods of refractory ceramic material and glasses having relatively high fusion temperatures and tensile strengths are converted to fiber by subjecting these rods to alternate fusion and gas-jet bursts. The refractory, high tensile strength fibers produced are combined with suitable binder to produce heat-resistant fabrics and rigid structures.
Electric gathering of sheet stock edges forms metal sheets in the shape of gore sections with heavier edge areas that can be welded without loss of strength. The edges are gathered by progressive resistance heating and upsetting, and are formed automatically. This process avoids disturbance of the metals internal structure.
Thermal contact resistance in vacuum environment using model predictions
Dry heat resistance of bacilus globigii spores encapsulated in lucite and dried on paper strips for spacecraft contamination experiment
Embedment of resistive heating elements in a cordwood module used for packaging electronic components, facilitates separation of the adhesive bond between the module, and metal heat sink and the potting material without damaging the components. Electrical power applied to the elements causes breakdown of bonding material.
Apparatus is used to prepare isotopically pure magnesium isotope-24, suitable for use in neutron scattering and polarization experiments. The apparatus permits thermal reduction of magnesium-24 oxide with aluminum and calcium oxide, and subsequent vaporization of the product metal in vacuum. It uses a resistance-heated furnace tube and cap assembly.
Dry heat resistance measurements of Bacillus subtilis var. Niger in and on various materials
Heat resistant protective coatings for use in liquid propellant rocket engines
Alloying and strengthening mechanisms for heat resistant refractory metals
Dry heat resistances of bacterial spores, and levels of microbial contamination on Apollo spacecraft
Development of aerospace structural materials - heat resistant alloys, refractory materials, transition metals, and composite materials
High temperature X ray diffractometer study of oxidation of heat resistant alloys
Estimation of gamma phase composition in nickel base heat resistant alloys based on analysis of quaternary phase diagrams
Electrothermal rocket engine using resistance heated heat exchanger
Heat resistant alloy technology for space shuttle reentry shields
Dry heat resistance of bacillus subtilis var. niger spores on selected planetary lander capsule surface materials
Permalloy evaporation rates from resistance heated W boat, revealing departure from free molecular flow