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Proceedings Paper

Optical skin friction measurement technique in hypersonic wind tunnel
Author(s): Xing Chen; Dapeng Yao; Shuai Wen; Junjie Pan
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Paper Abstract

Shear-sensitive liquid-crystal coatings (SSLCCs) have an optical characteristic that they are sensitive to the applied shear stress. Based on this, a novel technique is developed to measure the applied shear stress of the model surface regarding both its magnitude and direction in hypersonic flow. The system of optical skin friction measurement are built in China Academy of Aerospace Aerodynamics (CAAA). A series of experiments of hypersonic vehicle is performed in wind tunnel of CAAA. Global skin friction distribution of the model which shows complicated flow structures is discussed, and a brief mechanism analysis and an evaluation on optical measurement technique have been made.

Paper Details

Date Published: 19 October 2016
PDF: 4 pages
Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101550M (19 October 2016); doi: 10.1117/12.2244508
Show Author Affiliations
Xing Chen, China Academy of Aerospace Aerodynamics (China)
Dapeng Yao, China Academy of Aerospace Aerodynamics (China)
Shuai Wen, China Academy of Aerospace Aerodynamics (China)
Junjie Pan, China Academy of Aerospace Aerodynamics (China)

Published in SPIE Proceedings Vol. 10155:
Optical Measurement Technology and Instrumentation
Sen Han; JiuBin Tan, Editor(s)

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