引言近几年来,作用在大攻角细长旋成体上的侧向力受到很大的注意,因为该侧向力常常使火箭和飞机变为不可控制的。探空火箭头部模型空投试验表明,起初经过若干个翻滚运动以后,多数弹头边下降,边在平行于海平面的平面内,象螺旋桨一样旋转(平螺旋)。如果 INTRODUCTION Lateral forces acting on slender bodies of large angles of attack have received considerable attention in recent years as the lateral forces often make rockets and aircraft uncontrollable. The airdrop test of the sounding rocket head model showed that after several tumbling movements at first, most of the warheads descended while rotating like a propeller (flat spiral) in a plane parallel to the sea level. in case