Vaporization and decomposition kinetics of candidate re-entry blackout suppressants in low-pressure flames, Volume 1330
National Aeronautics and Space Administration, 1969 - Technology & Engineering - 58 pages
This report investiagtes measurement of thermal accommodation coefficients between liquids and high temperature gases in low pressure reentry communications blackout intervals.
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40 Torr activation energy AeroChem argon Baule Baule's theory Beams of uniformly Bott calculations capillary cc sec-1 cc sec"1 CFzO Chemical Kinetics co/o2 co/o2 CO/air CO/Oz collision Combustion communications blackout decomposition kinetics diameter droplet evaporation rates droplet sizes droplet surface electrophilic vapors environments equilibrium essentially estimated evaluation experimental Fenimore and Jones FLAME CHARACTERISTICS flame gases flame temperatures fluorocarbon free molecule Freon E-8 H atoms high-temperature incident gas molecules kcal mole-1 Kurzius liquid jet LIQUID PROPERTIES low-pressure mass mean droplet mean free path Modica Mole Fractions molecular molecular mass observed evaporation rates parameters perfluoro-octane Plasma pre-exponential factor predicted present experiments present study pressures probe rate constants ratio re-entry blackout suppressants re-entry flow fields reaction relatively SF6 VAPORS shown in Table Sulfur hexafluoride Table VIII thermal accommodation coefficients thermocouple TORR CO/AIR FLAME translational energy transfer translational thermal accommodation uniformly sized droplets values vibrational vibrationally excited water droplets