RLV双层迭代末端能量管理段轨迹设计方法  

Trajectory design method of two-layer iterative terminal area energy management for RLV

作　　者：郭杰[1] 郭阳 王肖 李梦婷 唐胜景[1] GUO Jie;GUO Yang;WANG Xiao;LI Mengting;TANG Shengjing(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;China Academy of Launch Vehicle Technology,Beijing 100076,China;Systems Engineering Research Institute of CSSC,Beijing 100094,China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]中国运载火箭技术研究院,北京100076 [3]中国船舶集团有限公司系统工程研究院,北京100094

出　　处：《飞行力学》2023年第1期54-62,共9页Flight Dynamics

基　　金：上海航天科技创新基金资助(SAST201711)。

摘　　要：针对可重复使用运载器末端能量管理段初始状态存在大范围摄动问题,提出一种双层迭代末端能量管理段轨迹设计方法。首先,将地面轨迹设计问题简化为求两直线公切圆问题,仅需改变单一参数即可大范围调节航程,得到可行地面轨迹;针对纵向平面,提出双层迭代轨迹设计算法,内层迭代剖面参数保证飞行器满足末端状态约束,外层迭代地面轨迹参数改变航程。然后,提出了制导方法和双层迭代校正算法,并开展了仿真计算及分析。研究结果表明,在初始状态存在大范围散布情况下,所提算法均可得到满足需求的地面轨迹和纵向剖面参数,保证飞行器顺利到达自动着陆窗口,末端状态误差较小,具备较强的鲁棒性。To solve the problem of large range perturbation in the initial state of the terminal area energy management of a reusable launch vehicle(RLV), a two-layer iterative end energy management trajectory design method is proposed. Firstly, after simplifying the problem of ground trajectory design to that of solving the common tangent circle of two straight lines, only by changing a single parameter, not only the range can be adjusted significantly, but also the feasible ground trajectory can be obtained. For the longitudinal plane, the two-layer iterative trajectory design algorithm is proposed. The inner layer iterative profile parameters ensure that the aircraft meets the end state constraints, and the outer layer iterative ground trajectory parameters change the range. Then, the guidance method and the two-layer iterative correction algorithm are proposed, and the simulation calculation and analysis are carried out. The research results show that in the case of a large-scale distribution in the initial state, the proposed algorithm can obtain the ground trajectory and longitudinal profile parameters that ensure the aircraft smoothly reaches to the approach and landing interface. The terminal state error is small and has a strong robustness.

关 键 词：可重复使用运载器 末端能量管理段 轨迹设计 双层迭代 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]