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Theoretical and experimental investigation on aero-optical effect for a compressible mixing layer

Gan Cai-Jun Li Lang Ma Han-Dong Xiong Hong-Liang

Theoretical and experimental investigation on aero-optical effect for a compressible mixing layer

Gan Cai-Jun, Li Lang, Ma Han-Dong, Xiong Hong-Liang
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  • Received Date:  27 April 2013
  • Accepted Date:  09 May 2013
  • Published Online:  20 September 2013

Theoretical and experimental investigation on aero-optical effect for a compressible mixing layer

  • 1. China Academy of Aerospace Aerodynamics, Beijing 100074, China
Fund Project:  Project supported by the National Basic Research Program of China (Grant No. 2009CB724105).

Abstract: Using dimensional analysis and experimental technique, the aero-optical effect for a compressible mixing layer around optical side window is investigated. According to the theoretical analysis, we find that time-averaged boresight error increases with the increase of convective Mach number (Mc). Moreover, we also present the relations between time-averaged boresight error (BSE) and Reynolds number, shear stress at interface between mixing layer and free stream, free stream velocity ratio and density ratio. The experimental results from a thin beam light passing through compressible mixing layer verify the theoretical result between time-averaged BSE and Mc.

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