一种载人小行星探测轨道优化设计方法  

A Method of Trajectory Design for Manned Asteroids Exploration

作　　者：甘庆波[1] 张扬[1] 朱正帆 韩威华[1,3] 董鑫[1] 

机构地区：[1]中国科学院光电研究院,北京100094 [2]中国科学院大学,北京100049 [3]北京航天飞行控制中心,北京100094

出　　处：《天文学报》2014年第6期476-487,共12页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(11303029)资助

摘　　要：给出了一种基于变比冲核电推进载人飞船探测小行星的轨道优化设计方法.首先基于双脉冲单圈Lambert轨道转移,对地球出发段和返回段进行搜索剪枝,再从两个可行区域中优选最佳飞行路径.设定"推进-滑行-推进"的分段飞行策略,以工质消耗最少为指标,利用混合法优化核电推进飞行轨迹,最后以分段优化参数为初值,基于整体任务约束将全飞行过程转化为非线性优化问题,将各飞行段进行拼接,获得整体参数优化解,并给出了数值和图形结果.A trajectory optimization method of the nuclear propulsion manned as- teroids exploration is presented. In the case of launching between 2035 and 2065, based on the Lambert transfer orbit, the phases of departure from and return to the Earth are searched at first. Then the optimal flight trajectory in the feasible regions is selected by pruning the flight sequences. Setting the nuclear propulsion flight plan as propel-coast-propel, and taking the minimal mass of aircraft departure as the index,the nuclear propulsion flight trajectory is separately optimized using a hybrid method. With the initial value of the optimized local parameters of each three phases, the global parameters are jointedly optimized. At last, the minimal departure mass trajectory design result is given.

关 键 词：天体力学 地球 航天器 小行星:普通 方法:数值 

分 类 号：P173[天文地球—天文学]