考虑攻击角度和时间约束的再入轨迹规划方法  

Reentry trajectory planning method considering impact angle and time constraints

作　　者：雷刚 陈绪帆 郑晓龙 赵鑫[2] 刘锋[3] LEI Gang;CHEN Xufan;ZHENG XiaoLong;ZHAO Xin;LIU Feng(Rocket Force University of Engineering,Xi'an 710025,China;96764 Troops of the PLA,Luoyang 471600,China;75833 Troops of the PLA,Guangzhou 512000,China)

机构地区：[1]火箭军工程大学,陕西西安710025 [2]中国人民解放军96764部队,河南洛阳471600 [3]中国人民解放军75833部队,广东广州512000

出　　处：《飞行力学》2022年第1期76-83,共8页Flight Dynamics

摘　　要：针对考虑终端横向攻击角度和时间约束的再入轨迹规划问题,提出了一种纵向轨迹和横向机动轨迹相结合的高超声速飞行器再入轨迹规划方法。首先,通过再入飞行过程约束得出高度-速度剖面内的再入轨迹边界,利用改进的两个高度系数控制的高度-速度剖面规划多项式得出飞行器再入轨迹纵向剖面;然后,根据终端横向攻击角度约束预设导航点,规划出满足条件的横向机动轨迹。此外,通过对两个高度系数的调整可实现在航程不变的情况下对飞行时间在一定范围内的调节。仿真结果表明:该方法能充分适应具有攻击角度和时间约束的再入轨迹规划任务。For the reentry trajectory planning problem considering the terminal lateral impact angle and time constraint, a reentry trajectory planning method for hypersonic vehicles combining longitudinal trajectory and lateral maneuvering trajectory was proposed. Firstly, the reentry trajectory boundary within the altitude-velocity profile was derived from the reentry flight process constraint, and the vehicle reentry trajectory longitudinal profile was derived using a modified altitude-velocity profile planning polynomial controlled by two altitude factors. Then, a lateral maneuver trajectory satisfying the conditions could be planned by constraining the preset navigation points according to the lateral impact angle of the terminal. In addition, by adjusting two altitude factors, the flight time could be adjusted within a certain voyage with no change in voyage. Simulation results show that the method can adequately adapt to the reentry trajectory planning task with impact angle and time constraints.

关 键 词：再入轨迹规划 高度-速度剖面 时间协同 横向机动 导航点 

分 类 号：V448.235[航空宇航科学与技术—飞行器设计]