一种RLV末端能量管理段的轨迹实时规划方法

摘要

提出了一种能适应较大初始误差,使可重复使用运载器(reusablelaunch vehicle,RLV)最终达到自动着陆段初始要求的末端能量管理段(terminal area energy management,TAEM)的轨迹规划方法.该方法基于二次多项式形式的动压剖面,只需任意选取2个末端能量管理段的几何参数值,就可以规划出一条满足末端能量管理段终端约束的轨迹,同时航向调整圆锥位置和进场方式可调节.仿真结果表明:所提的轨迹规划方法能够实时生成一条满足要求的参考轨迹线,验证了该方法的合理性.%The paper proposes a method of trajectory planning for reusable launch vehicle (RLV) terminal area energy management (TAEM) phase, with which we can ensure that the RLV can arrive at autolanding interface even if there is a big error at the beginning of TAEM. This method is based on the reference dynamic pressure section with quadratic polynomial. And the advantages of this method are that we can get one satisfied trajectory when choosing only two geometry parameters of TAEM phase arbitrarily and that the position of heading alignment cone and the HAC mode can be adjusted. Based on these, a on-line TAEM trajectory planning algorithm is developed. The results of the simulation show that the proposed track scheme is rational and effective.