月球探测器飞越多小天体的拓展任务设计  

Design of extended mission to flyby multi small celestial bodies using lunar probe

作　　者：刘磊[1] 陈明[1] 张尧 LIU Lei;CHEN Ming;ZHANG Yao(Science and Technology on Aerospace Flight Dynamics Laboratory,Beijing Aerospace Control Center,Beijing 100094,China)

机构地区：[1]北京航天飞行控制中心航天飞行动力学技术重点实验室,北京100094

出　　处：《国防科技大学学报》2023年第3期39-44,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11773004,11303001)。

摘　　要：为充分利用月球探测任务完成后的探测器,提出控制其从环绕月球或地球的轨道出发开展多个小天体飞越探测拓展任务。结合月球探测任务完成后的探测器飞行状态,重点分析了逃逸月球或地球的能量需求,以及小天体飞越探测的其他必要条件,如小天体亮度、星载设备能力约束等。研究了小天体目标确定和转移轨道设计方法,针对小天体目标众多引起的搜索空间和计算量大、多目标序列优化复杂等问题,设计了小天体目标多层择优搜索算法。以嫦娥五号为例,搜索得到了多个可行的小天体飞越探测方案,结果表明在给定约束下可以交会最多5个小天体,包括尺寸较大的小行星12923。研究结论可直接用于嫦娥五号拓展任务,并为后续月球和小天体探测任务提供有益参考和借鉴。For a full utilization of the probe after the lunar exploration,the extended mission using the probe for flybys of multi small celestial bodies from the Moon or Earth orbit was proposed.Combined with the flight status of the probe after the lunar exploration mission,the energy requirement for escaping from the Moon or the Earth was emphatically analyzed,together with other necessary conditions for the flyby mission,such as the brightness of small celestial bodies,the capacity of onboard equipment,etc.The methods of selecting small celestial bodies and trajectory design were studied.Aiming at the problems of large search space,large amount of computation and hard optimization of multi target sequences caused by large number of targets,a multi-layer optimal search algorithm for small celestial bodies was designed.Taking Chang′e-5 as an example,the search yielded several feasible solutions for small celestial bodies′flyby detection.The result shows that the orbiter can approach up to five asteroids under given constraints,including the large Asteroid 12923.The study conclusion can be used for the Chang′e-5 extended mission,and provide beneficial reference for the future missions of the Moon and small celestial bodies.

关 键 词：月球探测 小天体 飞越任务 嫦娥五号 拓展任务 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]