高超声速无动力滑翔三维轨迹规划方法

轨迹规划是进行高超声速滑翔飞行器任务设计以及提高制导方法适应性的有效途径. 定义了目标平面坐标系,并将该坐标系作为参考坐标系推导了归一化能态方程. 该方程具有定积分区间的优点,并可用状态直接表征横程和纵程. 基于该方程提出了纵向轨迹规划方法和侧向轨迹规划方法,并考虑轨迹横向曲率,提出了结合纵向轨迹规划方法和侧向轨迹规划方法的三维轨迹规划方法. 仿真计算结果表明该方法可快速、精确地完成高超声速滑翔飞行器的滑翔轨迹规划. 

Three-Dimensional Trajectory Planning Method for Hypersonic Glide Vehicles

It's an effective way to improve the guidance adaptability for hypersonic glide vehicle (HGV) by applying trajectory planning. First, the target plane coordinate frame was defined. Then, taking the coordinate frame as the reference coordinate frame, dynamic equations with the normalized energy as independent variable were deduced, which have the advantages of fixed integral interval, and cross-range and longitudinal range could be denoted by the equation states. Based on the equations, longitudinal trajectory planning method was put forward as well as lateral trajectory planning method. With the combination of above methods and the trajectory of lateral curvature, a three-dimensional trajectory planning method has been implemented. It is shown that the proposed method can fulfill trajectory planning for HGV rapidly and accurately.