有限推力机动变轨能力包络快速计算分析

通过设计加权的组合性能指标函数,将机动变轨能力包络计算评估问题转化为一系列使组合性能指标最优的飞行任务规划问题求解,并采用求解精度高、收敛速度快的伪谱结点-非线性规划方法将存在多个推进-滑行段的最优任务规划问题离散转换并快速求解。算例仿真表明,采用该方法可以综合评估限定推进剂耗量、程序角速率限幅等约束下的机动变轨能力包络,给出满足可控性要求的最优飞行轨道,进而可以增强小推力长期在轨机动飞行器的多样化任务适应能力。

Rapid Computation and Analysis of Finite Thrust Maneuver Capability

Evaluating of maneuver capability envelope is transformed into a serial optimal flight mission planning problems through designing weighted combined cost functions, and the optimal mission planning problem that includes multi-thrust-coast phases can be transformed and solved rapidly by high precision pseudospectral knotting- nonlinear programming method. Numerical simulation shows that this method can generate controllable optimal flight trajectories while evaluating the integrated maneuver capability under various constraints including fuel consume and control angle rate limit, which will enhance the mission adaptability of finite thrust long-term in orbit maneuver vehicles.