【摘要】 流动显示结果表明 ,喷流能有效地推迟双三角翼前缘涡的破裂 ,且随着攻角的增大 ,前缘涡破裂位置逐渐推后 ,喷流极大地改善了大攻角情况下前缘涡的非对称破裂特性 ,能有效地克服可能出现的机翼的“摇滚”现象 .另外 ,后缘喷流可以减弱乃至消除前缘涡混掺现象的发生 ,进而有利于飞行器的操纵 .更多还原

【Abstract】 The flow visualization techniques has been used to investigate the effects of trailing edge jets on the leading edge vortex breakdown and its control of flow over a 76°/40° double Delta wing. The experimental results indicate that the trailing edge jets can delay the leading edge vortex breakdown efficiently, and this delay increases with the angle of attack. The trailing edge jets can greatly improve the asymmetrical characteristics of the leading edge vortex breakdown at large angle of attack, and the possible occurrence of “rock” phenomenon may be overcome. In addition, the trailing edge jets may weaken or even eliminate the mixing phenomenon of the leading edge vortex, which is in advantage of the flight control of aircraft.更多还原