Experimental demonstration of a new concept of drag reduction and thermal protection for hypersonic vehicles

查看全文 作　　者：Zonglin Jiang Yunfeng Liu Guilai Han Wei Zhao Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China

出　　处：《Acta Mechanica Sinica》索引2009年第25卷第3期,共3页

基　　金：the National Natural Science Foundation of China (10632090);the National Aerodynamic Pre-Research Foundation (513130401) 摘　　要：A new idea of drag reduction and thermalprotection for hypersonic vehicles is proposed based on thecombination of a physical spike and lateral jets for shock-reconstruction. The spike recasts the bow shock in front ofa blunt body into a conical shock, and the lateral jets workto protect the spike tip from overheating and to push theconical shock away from the blunt body when a pitchingangle exists during flight. Experiments are conducted in ahypersonic wind tunnel at a nominal Mach number of 6. Itis demonstrated that the shock/shock interaction on the bluntbody is avoided due to injection and the peak pressure atthe reattachment point is reduced by 70% under a 4°attackangle. 关键词：高超声速风洞实验演示热保护飞行器减阻圆锥形穗重钝体

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Experimental demonstration of a new concept of drag reduction and thermal protection for hypersonic vehicles

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