WIND TUNNEL EQUIPMENT, AIR CURRENT SHIELDING PLATE, AND WALL BODY UNIT FOR SEMI-CLOSED TYPE WIND TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide a wind tunnel equipment and the like capable of measuring accurately both aerodynamic performance and acoustic performance.;SOLUTION: Transaudient walls 100 are installed in a measurement shell 1 of the wind tunnel, to thereby partition the measurement shell 1 into an aerodynamic measurement chamber 200 for measuring the aerodynamic performance to a specimen 15 and first to third acoustic measurement chambers 300a, 300b, 300c for measuring the acoustic performance with respect to the specimen 15. The transaudient wall 100 is constituted from a porous body 101 for transmitting an acoustic wave and a fibrous member 102 for covering the face of the porous body 101 on the opposite side to the aerodynamic measurement chamber 200. Hereby, since a sound generated by the contact of an air current with the porous body 101 is reduced by the fibrous member 102, the acoustic performance of the specimen 15 can be measured suitably in the first to third acoustic measurement chambers 300a, 300b, 300c.;COPYRIGHT: (C)2003,JPO