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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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Ultrasonic pulse method /1 to 3 MHz/ measures both sound speed and absorption in monatomic and polyatomic gases in a temperature range of 300 to 20000 degrees K at atmospheric pressure. Helium, nitrogen, oxygen, and argon are investigated.
Integrated tables of pressure, volume, and temperature for the saturated liquid, from the triple point to the critical point of the gases, have been developed. Tables include definition of saturated liquid curve. Values are presented in metric and practical units. Advantages of the new tables are discussed.
Filtration system with membrane type hydrophilic and hydrophobic filters gives absolute filtration with automatic venting of freed gases, and prevents backward transmission of contamination with no bacterial growth through the filters. Filter aids in degassing industrial solutions and in removing oxygen from sea water.
Shock tube thermochemistry tables for high temperature gases
Determination of energy loss factors for slow electrons in hot gases
Shock tube thermochemistry tables for high temperature gases
Sensing molecular weights of gases with fluidic oscillator
Radiant heat transfer properties of particle seeded gases, including absorption and scattering characteristics of carbon, silicon, and tungsten
Formation, growth and permeability of pressurant gases and propellant vapors through laminated bladder structures
Evaluation of fluidic oscillator as molecular weight sensor of gases
Design and fabrication of compact electric heat source for heating inert gases
Effects of various gases on thermionic emission of tantalum wire filaments
Estimation of transport properties for high temperature gases
Permeation of high density gases and propellant vapors through laminated Teflon expulsion bladders
First-order effects of plane surfaces on kinetic behavior of gases
Electric arc device for minimizing electrode ablation and heating gases to supersonic or hypersonic wind tunnel temperatures
Burning solid aluminum and magnesium spheres in high temperature and high velocity gases by combustion of hydrogen and oxygen