采用沿约束轨迹的推演计算方法对可重复使用飞行器无动力着陆轨迹进行设计。首先根据动压、过载、垂直下降率、连续性和平稳性要求确定飞行轨迹的基本形状,然后根据轨迹参数获得理想的接地动压。该方法具有简便、快速、鲁棒性强等特点,为机载轨迹在线生成的研究打下基础,具有较强的实用价值。 The non-powered landing trajectory of reusable aircraft was designed using the method of deduction along the constraint trajectory. Firstly, the basic shape of the flight path is determined according to the requirements of dynamic pressure, overload, vertical descent rate, continuity and stability, and then the ideal ground dynamic pressure is obtained according to the trajectory parameters. The method is simple, fast and robust. It lays the foundation for the on-line generation of airborne trajectories and has strong practical value.