高超声速导弹高空再入减速段弹道优化设计

首先建立了高超声速导弹再入段弹道模型,并将攻角作为控制变量。在满足过载及动压约束条件下,利用惩罚函数将其转化为无约束的弹道优化问题,并采用双切点遗传算法进行优化计算。文中采用两种方法:一种是直接优化攻角,另一种是给定攻角变化规律为二次曲线,优化二次多项式系数。算例表明,两种方法均取得了较好的优化结果,即满足约束条件下得到终端最大速度。但在合理性以及实现性方面,第二种方法优于第一种方法。

The Optimization Design for High-Altitude Reentry Deceleration Trajectory of Hypersonic Missile

The model of reentry trajectory is established and the angle of attack is regarded as control variable.Due to the constraints of overload and dynamic pressure,the double-cut genetic algorithm is applied to solve the problem,and a penalty function is designed to regard this problem as none constraints qualification for trajectory optimization.There are two methods proposed in this paper.One is direct optimization for the angle of attack,and the other is considering the angle of attack as a second curve and o...