19 October 2016 Optical skin friction measurement technique in hypersonic wind tunnel
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Proceedings Volume 10155, Optical Measurement Technology and Instrumentation; 101550M (2016) https://doi.org/10.1117/12.2244508
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
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.
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Xing Chen, Xing Chen, Dapeng Yao, Dapeng Yao, Shuai Wen, Shuai Wen, Junjie Pan, Junjie Pan, } "Optical skin friction measurement technique in hypersonic wind tunnel", Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101550M (19 October 2016); doi: 10.1117/12.2244508; https://doi.org/10.1117/12.2244508

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