基于物理规划的高超声速飞行器滑翔式再入轨迹优化

 轨迹优化是新型高超声速滑翔式再入飞行器方案设计的关键技术之一。物理规划方法能够以较低的计算代价获得设计者偏好的多目标优化问题的折中解。基于该方法研究滑翔式再入最优飞行轨迹。首先介绍物理规划方法求解多目标优化问题的数学模型，然后将考虑射程最大、热载最小、热流密度峰值最小和弹道最稳定4个目标的再入最优轨迹问题纳入物理规划的框架求解。以某带翼锥形再入飞行器为例，通过计算并分析单目标优化结果，确定具体的偏好结构，采用遗传算法求解了考虑热流、过载、动压和终端条件约束的多目标最优轨迹。优化计算结果验证了物理规划方法的有效性。分析了沿最优轨迹飞行的物理原因和基本迎角控制规律，可为滑翔式再入飞行器的最优轨迹方案设计提供依据。

Trajectory Optimization of Hypersonic Gliding Reentry Vehicle Based on the Physical Programming

Trajectory optimization is one of the key factors in scheme planning of the new type of hypersonic gliding reentry vehicles. The optimal gliding reentry trajectories are researched based on the physical programming (PP) method, which is capable to obtain tradeoff solution of multi-objective optimization problem with less computational intensity and reflect the designer's preference. The fundamental process of solving multi-objective optimization with PP is introduced firstly. And then, the optimization prob...