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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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High speed blowdown takes advantage of discretely maintained differential pressures to vent a test chamber from high to ambient pressure with minimum time lag. This technique is advantageous where the use of pyrotechnics is undesirable.
Potassium cobalt ferrocyanide is used to determine cesium-137 activity in irradiated fuel samples. It preferentially removes cesium from an acid solution of the fuel material. The residue is filtered and analyzed with a gamma spectrometer.
Sodium perxenate oxidizes manganese to permanganate almost instantaneously in dilute acid solution and without a catalyst. A solution is prepared by dissolving 200 mg of sodium perxenate in distilled water and diluting to 100 ml.
Decompression of chimpanzees to near vacuum and recovery
Accelerated stress corrosion tests for aluminum alloys
Design and performance of microspectrophotometer
Iron and stony meteorite cooling rates determined by measuring kamacite bandwidth, bulk nickel content and composition
Liquid scintillation counting method with sonic oscillations, noting decreased preparation time and increased counting efficiency
Linear segment pitch rate program for near optimum trajectory for rocket boosters
Docking and fuel transfer system provides an efficient method for transferring fuel from a tanker to another vehicle. With this system, no triggering operation is required prior to docking, the support system can be rigidized by simply locking the rams of shock absorbers, and no separate fuel line coupling action is required.
Stressed alloy specimens are immersed in a salt-dichromate solution at 60 degrees C. Because of the minimal general corrosion of these alloys in this solution, stress corrosion failures are detected by low-power microscopic examination.
Idealized combustion model in which exothermic or endothermic reactions are permitted at or very near solid-gas interfaces
Time histories of intensities and spectra for low energy electrons and protons in magnetosphere
Dielectric formulation for inhomogeneous electron gas, and Green function formalism for treating static dielectric screening of point impurity in electron gas
Accelerated stress corrosion test for aluminum alloys
Computer program technique for determination of opportunities for recall of spacecraft to multiple landing sites from circular or elliptical orbits
Linear segment pitch rate program for near optimum trajectory for rocket boosters
Nucleosynthesis by neutron capture on fast time scale in supernova explosion models for dynamics of highly evolved massive star cores