Skin Friction Measurement Based on SSLCCs in Hypersonic Wind Tunnel
This paper describes a creative application of global skin friction measurement based on shear-sensitive liquid crystal coatings (SSLCCs) for delta wing in hypersonic wind tunnel. The system of optical skin friction measurement is built, and some wind tunnel experiments are performed in China Academy of Aerospace Aerodynamics (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. The experiments prove this method practicable, and it valuably solves the hard problem of skin friction measurement in hypersonic flow condition.
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