过失速飞机最速指向目标机动研究

基于飞机质点动力学模型建立了指向活动目标的终端条件,并进行最速指向机动动作的数值优化,其中用共轭梯度法寻优,用罚函数处理约束条件.计算结果表明,优化可以指导寻找对应于不同战术要求的有利机动过程;在近距空战中,具有快速改变航迹方向并进入过失速超大迎角机动的能力非常有利于快速指向目标、争取首攻机会,而改变航迹方向倾向于使用最大升力区迎角.

Research on Optimal Pointing Maneuvers of Post Stall Aircraft

A terminal condition is put forward based on nonlinear point-mass aircraft dynamics, under which the given movable target shall be pointed. A numerical procedure on optimization of minimum-time pointing maneuvers is then established, in which the conjugate gradient method is employed to search for the optimal solution, and a punishment function is defined to handle the constraints. Numerical results show that the procedure can help ascertain the "best" maneuvers for different tactic requirements. Also shown is that the capability of rapid deep post-stall entry plays an unusual role in target pointing and shooting in within-visual-range air combat, as well as the capability of swift flight path reorientation which mainly stresses on the maximum lift.