Back pressure simulation by cavity injection and its application in hypersonic inlet experiment
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Back pressure simulation by cavity injection and its application in hypersonic inlet experiment
Vol. 22, Issue 10, (2007)
作者机构:
南京航空航天大学 高超气动研究中心(HARC),南京,210016
作者简介:
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Published:2007
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SUN Shu, ZHANG Hong-ying, CHENG Ke-ming, et al. Back pressure simulation by cavity injection and its application in hypersonic inlet experiment[J]. 2007, 22(10).
DOI:
SUN Shu, ZHANG Hong-ying, CHENG Ke-ming, et al. Back pressure simulation by cavity injection and its application in hypersonic inlet experiment[J]. 2007, 22(10).DOI:
Back pressure simulation by cavity injection and its application in hypersonic inlet experiment
A kind of back pressure simulation technology by cavity injection is brought forward to improve wind tunnel test capability for hypersonic inlets.During wind tunnel test process
the back pressure of inlet can be adjusted rapidly by regulating the valve of injection pipe.Utilizing this specific simulation technology
the performance at different back pressures and the unstarting/restarting characteristics of an axisymmetric inlet are investigated.The design Mach number of the inlet is 7.0.Results indicate:(1) The newly developed simulation technology can form fairly average and easily controllable back pressure downstream the inlet
so it can be used to investigate the back pressure characteristics of hypersonic inlets.(2) By regulating the valve of injection pipe
the simulation technology can realize the switch of hypersonic inlet started state and unstarted state in about 8 milliseconds
so it is suitable to investigate the starting/unstarting/restarting problem of hypersonic inlets.