Hypersonic blunt-body flows in hydrogen-neon mixtures

Stalker, R. J. and Edwards, B. P. (1998) Hypersonic blunt-body flows in hydrogen-neon mixtures. Journal of Spacecraft and Rockets, 35 6: 729-735. doi:10.2514/2.3399


Author Stalker, R. J.
Edwards, B. P.
Title Hypersonic blunt-body flows in hydrogen-neon mixtures
Journal name Journal of Spacecraft and Rockets   Check publisher's open access policy
ISSN 0022-4650
1533-6794
Publication date 1998-12-01
Sub-type Article (original research)
DOI 10.2514/2.3399
Volume 35
Issue 6
Start page 729
End page 735
Total pages 7
Editor E. Vincent Zoby
Place of publication Reston, VA, U.S.A.
Publisher American Institute of Aeronautics and Astronautics
Collection year 1999
Language eng
Subject C1
290299 Aerospace Engineering not elsewhere classified
690302 Space transport
090199 Aerospace Engineering not elsewhere classified
090103 Aerospace Structures
Formatted abstract
The use of hydrogen–neon gas mixtures for experimental simulation of hypersonic ionizing blunt-body flows in hydrogen–helium atmospheres is considered. An existing approximatetheory of blunt-body similarity is employed, and it is found that the ionizing relaxation of hydrogen can be accommodated in that theory if the effect of ionization along streamlines is correlated by a binary reaction variable involving the hydrogen partial pressure. The correlation is identical for helium and neon and is not influenced by the fraction of diluent. Thus blunt-body flows of hydrogen–heliummixtures can be simulated with hydrogen–neon mixtures of a different diluent fraction. The simulation is demonstrated by using experiments with a 60% hydrogen–40% neon mixture in a free piston nonreflected shock tunnel to obtain the shock shape on a hemispherically blunted cone entering the atmosphere of Uranus or Neptune.
Copyright © 1998 by the American Institute of Aeronautics and Astronautics, Inc.
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Tue, 10 Jun 2008, 23:48:20 EST