Volume 29 Issue 9
Sep.  2014
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Article Navigation >  Journal of Aerospace Power  > 2014  >  29(9): 2040-2046
WENG Xiao-chai, GUO Rong-wei, ZHU Dan-dan. Aerodynamic characteristics of design Mach number of 5 two-dimensional inlet with mixed-compression under typical condition[J]. Journal of Aerospace Power, 2014, 29(9): 2040-2046. doi: 10.13224/j.cnki.jasp.2014.09.004
Citation: WENG Xiao-chai, GUO Rong-wei, ZHU Dan-dan. Aerodynamic characteristics of design Mach number of 5 two-dimensional inlet with mixed-compression under typical condition[J]. Journal of Aerospace Power, 2014, 29(9): 2040-2046. doi: 10.13224/j.cnki.jasp.2014.09.004
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Aerodynamic characteristics of design Mach number of 5 two-dimensional inlet with mixed-compression under typical condition

doi: 10.13224/j.cnki.jasp.2014.09.004

  • 1. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

  • 2. Unit 94710, the Chinese People's Liberation Army, Wuxi Jiangsu 214141, China;

  • 3. Co-Innovation Center for Advanced Aero-Engine, Beijing 100191, China;

  • 4. Unit 94627, the Chinese People's Liberation Army, Wuxi Jiangsu 214141, China

  • Received Date: 2013-05-29
  • Publish Date: 2014-09-28
    Abstract
  • The aerodynamic characteristics of a design Mach number of 5 two-dimensional inlet with mixed-compression during reentry under typical condition were investigated experimentally using wind tunnel and simulation. The results show that: when the free stream Mach number is higher than the design Mach number of 5, the external ramp oblique shocks of inlet intersect in advance and impinge on the cow inner surface, causing shock-shock interaction in combination with the cow oblique shock. Though the flow separations occur, the turbulence intensities upstream the inlet exit are less than 3.337 and 3.256 respectively when the free stream Mach numbers are 7 and 6, and the power spetrum density of the dynamic pressure signals in the duct generally presents the characteristics of white noise, causing little damage to the structure of the engine. Accordingly, in order to improve the mass flow of the inlet working over a wide rang of free stream Mach number, the design Mach number of inlet can be reduced properly.

     

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