一种典型过失速机动的仿真

从飞机的六自由度运动方程出发,结合推力矢量控制系统,进行三种典型过失速机动的数值仿真,主要研究了第一种机动的操纵规律;失速迎角后大迎角不对称气动力和力矩及气动迟 完成过失速机动的影响;推力矢量在实现过失速机动中所起到的作用。此外,对不同初始飞行状态也给予了讨论。仿真结果表明：推力矢量是过失速机动的有效手段;在设计操纵规律时,应予以充分考虑到不对称气动力矩的影响,气动迟滞、进入速度对过失速机动的影响

Mathematical Simulations of Three Typical Post Stall Maneuvers

Based on the six degree of freedom dynamic equations of an aircraft with thrust vectoring system, mathematical simulations of three typical post stall maneuvers (Cobra, Tail slide and Herbst turn)are presented. The research is focused on the influences of three sides on post stall maneuvers,that is, the optimal control law for each maneuver; the asymmetric aerodynamic forces and moments and their "hysteresis" at high AoA ; the thrust vectoring system. Moreover, different flight conditions are also considered. The results show that, the thrust vectoring plays an important role in post stall maneuvers, the asymmetric aerodynamic forces and moments should be pay great attention in designing the control laws, the effects of aerodynamic hysteresis and the entry velocity on post stall maneuvers can not be neglected.