Effects of flexibility on aerodynamic performance of delta wings with different sweep angles

查看全文 作　　者：LIU Yang,ZUO LinXuan & WANG JinJun Institute of Fluid Mechanics,Beijing University of Aeronautics and Astronautics and Fluid Mechanics Key Laboratory,Ministry of Education,Beijing 100191,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2010年第53卷第5期,共8页

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 10425207 and 10832001) 摘　　要：Force measurement and surface oil flow visualization experiments were conducted in a wind tunnel to investigate the effects of flexibility on aerodynamic performance of delta wings with different sweep angles.The experimental results indicate that the maximum lift coefficient is increased and the stall angle is delayed as the sweep angle increases for both rigid and flexible wings.It is also found that the maximum lift coefficients of the flexible wings with a sweep angle from 35° to 50° are higher than those of the rigid ones.The increment of the maximum lift coefficient in particular achieves 32.9% compared with the case without lift enhancement for the 40° flexible delta wing.Moreover,the surface oil flow visualization experiments show that the stall of the flexible wing of the moderate low sweep angle is accompanied by helical flow structure,while the vortex bursting appears on the corresponding rigid wing. 关键词：DELTA WING WING FLEXIBILITY AERODYNAMICS SWEEP ANGLE

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Effects of flexibility on aerodynamic performance of delta wings with different sweep angles

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