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High temperature reformation of aluminum and chlorine compounds behind the Mach disk of a solid-fuel rocket exhaustChemical reactions expected to occur among the constituents of solid-fuel rocket engine effluents in the hot region behind a Mach disk are analyzed theoretically. With the use of a rocket plume model that assumes the flow to be separated in the base region, and a chemical reaction scheme that includes evaporation of alumina and the associated reactions of 17 gas species, the reformation of the effluent is calculated. It is shown that AlClO and AlOH are produced in exchange for a corresponding reduction in the amounts of HCl and Al2O3. For the case of the space shuttle booster engines, up to 2% of the original mass of the rocket fuel can possibly be converted to these two new species and deposited in the atmosphere between the altitudes of 10 and 40 km. No adverse effects on the atmospheric environment are anticipated with the addition of these two new species.
Document ID
19760061631
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Park, C.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Publication Information
Publication: Atmospheric Environment
Volume: 10
Issue: 9, 19
Subject Category
Spacecraft Propulsion And Power
Accession Number
76A44597
Distribution Limits
Public
Copyright
Other

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