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Proceedings Paper

High-altitude shock-layer ultraviolet emissions measured using highly elliptical orbits
Author(s): Deborah A. Levin; L. Carl Howlett; Leonard H. Caveny; David M. Mann
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Paper Abstract

Predicting emissions under rarified flow conditions remains a challenge. Two rocket experiments (at 3.5 and 5 km/s) obtained the UV data under flight conditions using onboard instruments; the greatest discrepancies in the predictions occurred at the higher altitudes. An additional experiment is being planned to extend the velocity to 7 to 8 km/sec using instrumentation onboard a small satellite with a highly elliptical orbit. Scanning spectrometers and photometers will observe the periodic bow shock interactions. The periodic bow shock re- immersion to low altitudes (200 to 120 km) coupled to the orbital decay of the satellite, provide an opportunity to progressively map a broad region of rarified aerodynamics. The paper discusses the flight regime of the planned experiment, provides examples of the anticipated phenomena and calculations, and gives an indication of the preliminary sets of instruments and measurements planned.

Paper Details

Date Published: 15 November 1993
PDF: 11 pages
Proc. SPIE 1952, Surveillance Technologies and Imaging Components, (15 November 1993); doi: 10.1117/12.161423
Show Author Affiliations
Deborah A. Levin, Institute for Defense Analysis (United States)
L. Carl Howlett, Utah State Univ. (United States)
Leonard H. Caveny, Strategic Defense Initiative Organization (United States)
David M. Mann, U.S. Army Research Office (United States)

Published in SPIE Proceedings Vol. 1952:
Surveillance Technologies and Imaging Components
Sankaran Gowrinathan; C. Bruce Johnson; James F. Shanley, Editor(s)

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