高超声速滑翔飞行器再入轨迹在线生成算法设计

On-Board Generation Method Design for Hypersonic Glide Vehicle Reentry Trajectory

高超声速滑翔飞行器具有再入走廊狭窄、机动能力强和再入制导实时性要求高的特点。针对再入走廊多约束问题,分析了不确定因素下再入走廊约束转化成倾侧角约束的问题。利用禁飞圆切线法预测总航程,结合航向角误差走廊控制横向突防轨迹,设计了三维耦合突防轨迹在线生成方法。仿真结果表明,迭代2~3次即可获得满足约束条件的大范围机动再入轨迹。

Hypersonic glide vehicle has the narrow reentry corridor,strong maneuverability and high realtime demand for reentry guidance. Aiming at the reentry corridor constrains,the transformation from reentry corridor to bank angle constraint with uncertainties is studied. By predicting the whole flight range using no-fly zone tangent and controlling the lateral trajectory by combining the heading angle error corridor and on no-fly zone tangent,an on-board generation method of three-dimensional coupling penetrating reentry trajectory is finally designed. The numerical simulation results demonstrate that a satisfying trajectory can be generated within 2 ~ 3 iterations by using this method which can adapt to reentry trajectory with large maneuvers.