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Effects of boundary-layers bleeding on unstart/restart characteristics of hypersonic inlets

Published online by Cambridge University Press:  03 February 2016

J. Chang ,
D. Yu ,
W. Bao ,
Y. Fan  and
Y. Shen
J. Chang
Affiliation:
juntao_chang@yahoo.com.cn, Harbin Institute of Technology, Heilongjiang, China
D. Yu
Affiliation:
juntao_chang@yahoo.com.cn, Harbin Institute of Technology, Heilongjiang, China
W. Bao
Affiliation:
juntao_chang@yahoo.com.cn, Harbin Institute of Technology, Heilongjiang, China
Y. Fan
Affiliation:
juntao_chang@yahoo.com.cn, Harbin Institute of Technology, Heilongjiang, China
Y. Shen
Affiliation:
juntao_chang@yahoo.com.cn, Harbin Institute of Technology, Heilongjiang, China
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Abstract

A series of mixed-compression hypersonic inlets at different bleeding rates were simulated at different freestream conditions in this paper. The unstart/restart characteristics of hypersonic inlets were analysed and the reasons why the unstart/restart phenomenon is in existence is presented. The unstart/restart characteristics of hypersonic inlets at different bleeding rates were given. The effects of boundary-layer bleeding on the performance parameter (mass-captured coefficient, total-pressure recovery coefficient), starting and restarting Mach number of hypersonic inlets were discussed. In conclusion, boundary-layer bleeding can improve the performance parameter of hypersonic inlets, and can reduce the starting and restarting Mach number, and can broad the operation range of the hypersonic inlet.

Type
Research Article
Information
The Aeronautical Journal , Volume 113 , Issue 1143 , May 2009 , pp. 319 - 327
Copyright
Copyright © Royal Aeronautical Society 2009 

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