Volume 22 Issue 10
Oct.  2007
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Article Navigation >  Journal of Aerospace Power  > 2007  >  22(10): 1667-1672
SUN Shu, ZHANG Hong-ying, CHENG Ke-ming, WU Yi-zhao. Back pressure simulation by cavity injection and its application in hypersonic inlet experiment[J]. Journal of Aerospace Power, 2007, 22(10): 1667-1672.
Citation: SUN Shu, ZHANG Hong-ying, CHENG Ke-ming, WU Yi-zhao. Back pressure simulation by cavity injection and its application in hypersonic inlet experiment[J]. Journal of Aerospace Power, 2007, 22(10): 1667-1672.
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Back pressure simulation by cavity injection and its application in hypersonic inlet experiment

  • Hypersonic Aerodynamics Research Center, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2007-05-17
  • Rev Recd Date: 2007-08-10
  • Publish Date: 2007-10-28
    Abstract
  • 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.

     

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