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Proceedings Paper

Characteristics Of C[sub]6[/sub]H[sub]6[/sub]-O[sub]2[/sub]-N[sub]2[/sub] Type CO[sub]2[/sub] Gasdynamic Laser
Author(s): Tadaharu Watanuki; Shigeru Sato; Yoshiya Itakura; Eiji Ogura; Yasuhiro Mizobuchi; Hirotoshi Kubota
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Paper Abstract

Characteristics of a C6116-02-N2 type combustion-driven CO2 gasdynamic laser, which should be a radiation heating simulator for re-entry of a planetary probe and AOTV, are experimentally and theoretically investigated. Small-signal gain coefficients are obtained for supersonic nozzle expansion ratios of 5, 7.5, 10, 15 and 20. The result shows : 1) qualitative agreement is obtained between the present measurements and the numerical analysis, 2) the small-signal gain grows as the nozzle expansion ratio is increased, and 3) there exists an optimum plenum pressure for small-signal gain coefficient under a certain expansion ratio of supersonic nozzle.

Paper Details

Date Published: 20 June 1989
PDF: 6 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950514
Show Author Affiliations
Tadaharu Watanuki, University of Tokyo (Japan)
Shigeru Sato, IHI Research Institute (Japan)
Yoshiya Itakura, University of Tokyo (Japan)
Eiji Ogura, University of Tokyo (Japan)
Yasuhiro Mizobuchi, University of Tokyo (Japan)
Hirotoshi Kubota, University of Tokyo (Japan)

Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers
Dieter Schuoecker, Editor(s)

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