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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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Flame-detector-rod holder is easily removed from the wall of a gas-fired furnance for maintenance or replacement of the detector rod without requiring shutdown of the furnace. The holder consists of an externally threaded outer bushing, a sleeve which is held inside the outer bushing with a set screw, and a detector rod assembly which screws into the sleeve.
Modified, commercially available thermocouple which measures the temperature of a spacecraft heat shield, is capable of continuous measurement in the range of minus 250 deg to 5000 deg F. The modified thermocouples may be used inside metal treating furnaces in high temperature technology, and in certain corrosive environments.
Copper-based quaternary alloys of the solid solution type is used for vacuum furnace brazing of large stainless steel components at a maximum temperature of 1975 deg F. The alloy has high bonding strength and good ductility over a temperature range extending from the cryogenic region to approximately 800 deg F.
PbTe-W and PbTe-Ta, SnTe-Ta equilibria, nonmagnetic bonding of pure PbTe and 3N powder to sintered pellets, and design and construction of furnace and lapping machine
Polarization properties of volcanic ash and furnace slag /simulated lunar surface/ materials determined as function of particle size, albedo, and porosity
Automatic double-crystal neutron diffractometer performs both crystal and magnetic structural analyses. This shielded installation has a goniometric turntable and electronic controls, and auxiliary equipment including a goniometer, diffraction electromagnet, two cryogenic dewars, and two diffraction furnaces.
Growth characteristics and properties of boron carbide whiskers obtained by vapor deposition method, or in graphite resistance furnace
Furnace capable of heating 10 specimens to a uniform temperature simultaneously, aids in the measuring of the thermal expansion of each specimen. The specimens are measured with a telescope unit consisting of two microtelescopes. Overall accuracy of the system is estimated to be plus or minus 2 percent at 2000 degrees C.
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.
Differential thermal analysis and differential scanning calorimetry evaluations on effects of heating rate and furnace atmosphere on inorganic salts
This report covers a comprehensive research study of Androforming, explosive forming, and stretch forming as applied to shaping a parabolic reflector segment for use in a solar furnace. Development efforts were directed toward attaining accurate part contour, and assurance of process reproducibility. The three forming processes mentioned above were investigated by qualified contractors. Three test segments formed by each method along with a detailed analysis were submitted to MSFC. It was concluded that optimum results could be obtained with the stretch forming process. The three test segments of the solar concentrator tha.t were produced by this method, and evaluated optically, revealed a maximum contour deviation of O. 76 degrees.
Isothermal drop calorimeter measures the heat content of intensely alpha active and pyrophoric materials in inert atmospheres. It consists of a furnace, calorimeter, and aluminum isothermal jacket contained within an inert-atmosphere glove box, which permits the use of unencapsulated materials without exposing personnel to alpha contamination.
Rubidium, Sr and Sr isotopic composition of normal gray hypersthene chondrite falls, noting Rb/Sr and Sr87/Sr86 ratio determination of Bath Furnace L chondrite isochron
Commercially available nickel-copper wire containing 6 and 12 percent nickel is used in high temperature furnace brazing of rocket engine parts. Brazed joints have properties comparable to or better than those brazed with more expensive materials, and cost savings are substantial.
Creep characteristics of molybdenum at high temperature and stress are utilized to compress tungsten foil liner against inner surface of tantalum alloy cylinder to form bond at interface. Temperature and pressure can be accurately controlled and size of workpiece is limited only by furnace size.
High temperature coatings in industrial, military and space applications, noting use in metal melting and working, furnace protection, propulsion systems, rocket engines, etc
Parabolic solar furnace for chemical manufacture of impurity sensitive materials in orbiting spacecraft
Water-base coatings containing potassium silicate show improvement in areas of quick air-drying, crack, craze, and abrasion resistance, adherence, and leach resistance. Coatings are useful as thermal-barrier layers in furnaces, and as general purpose fire resistant surfaces where vapor impermeability is not a requirement.