Spacecraft Contamination from a Chemical Laser Ring-Jet. A Progress Report.
Contractor rept. Mar-Aug 85,
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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The purpose of this report is to present a review of work done at the Naval Postgraduate School NPS on the contaminating backflow from the exhaust plume of a chemical laser mounted on an earth-orbiting spacecraft. Various mechanisms that may give rise to a backflow are outlined primarily thermal backscattering ambient scattering and viscous effects. Detailed studies have been conducted at NPS on thermal backscattering. They are reviewed in this report, concluding that corrosive fluxes HF,DF,F due solely to this effect are negligible. The flux of light species He,H2, however, is significant. Keywords Hydrogen fluoride Deuterium fluoride Fluorine Helium Hydroden Laser exhaust Spacecraft contamination Chemical laser Exhaust plume.
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