本文介绍了头部旋转对大迎角不对称涡系影响的观测结果,说明了由此而抑制大迎角不对称涡系的机理。 实验结果表明,头部旋转对细长体无侧滑大迎角不对称涡系涡迹的影响是:随头部的逐渐转动,涡系的不对称发生了周期性变化;此时,由于涡不可能迅速改变状态,从而抑制、甚至接近消除了大迎角时出现的涡系不对称现象。 This paper presents the observations of the effects of head rotation on the asymmetry vortex at high angles of attack, and illustrates the mechanism by which the asymmetric vortex at high angles of attack is suppressed. The experimental results show that the effect of head rotation on the vortex shedding at the high-angle of attack of the slender body is as follows: the asymmetry of the vortex system periodically changes with the gradual rotation of the head; at this time, It is impossible to quickly change the state, so as to restrain and even eliminate the vortex system asymmetry occurring at a high angle of attack.