Transient reactive exhaust flow from a ring-symmetric HF/DF space laser
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Author
Contributions
- Naval Postgraduate School (U.S.). Space Systems Academic Group - Contributor
Publication
1987 - Available from National Technical Information Service, Monterey, Calif, California
Language
English
Word Count
11,250 words, Guess
Page Count
45 pages
Identifiers
- Internet Archivetransientreactiv00falc
- Open LibraryOL33220440M
Alternate Titles
- NPS-72-87-002CR.
Description
Transient diffuser flow in an HF/DF laser is analyzed via a simplified model. A radial laser configuration is assumed where the diffuser is idealized as a ring-symmetric channel of uniform width. The outward radial flow following an abrupt start-up of diffuser inflow is computed numerically using a GRP-type code for integrating the Euler equations, which include an ongoing reaction of hydrogen recombination. A new kinetic scattering effect is suggested, resulting from the recoil of an HF or DF molecule assisting as third body in the hydrogen recombination reaction. The main conclusion is that transient diffuser plume flow effects do not drastically aggravate the potential for contaminating backflow (HF + DF) caused by either thermal or kinetic backscattering. Keywords: Laser exhaust; Spacecraft contamination; Chemical laser; Exhaust plume, Hydrogen recombination; Transient flow.
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