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孟占峰, 高珊, 彭兢. 基于轨道任务几何的“嫦娥五号”采样区选择[J]. 深空探测学报(中英文), 2021, 8(3): 227-236. DOI: 10.15982/j.issn.2096-9287.2021.20210023
引用本文: 孟占峰, 高珊, 彭兢. 基于轨道任务几何的“嫦娥五号”采样区选择[J]. 深空探测学报(中英文), 2021, 8(3): 227-236. DOI: 10.15982/j.issn.2096-9287.2021.20210023
MENG Zhanfeng, GAO Shan, PENG Jing. Sampling Area Selection for Chang’E-5 Mission Using the Orbital Geometry[J]. Journal of Deep Space Exploration, 2021, 8(3): 227-236. DOI: 10.15982/j.issn.2096-9287.2021.20210023
Citation: MENG Zhanfeng, GAO Shan, PENG Jing. Sampling Area Selection for Chang’E-5 Mission Using the Orbital Geometry[J]. Journal of Deep Space Exploration, 2021, 8(3): 227-236. DOI: 10.15982/j.issn.2096-9287.2021.20210023

基于轨道任务几何的“嫦娥五号”采样区选择

Sampling Area Selection for Chang’E-5 Mission Using the Orbital Geometry

  • 摘要: “嫦娥五号”(Chang’E-5,CE-5)任务飞行过程复杂、约束条件多,采样区域的选择与轨道设计密不可分。首次提出了基于轨道任务几何的采样区选择方法,以确保探测器任务时序安排紧凑、推进剂消耗少、发射窗口适应范围广、发射机会最多、并满足各个分系统要求。首先给出了工程实施代价最小的可行采样区范围,再综合考虑采样区的地形安全性和科学价值确定最终的采样区范围。与传统方法相比,本方法考虑了月球无人采样返回任务特有的采样区位置与飞行方案的强耦合性,从工程易实施、适应范围广等方面对采样区的位置和范围进行确定,从而确保了飞行方案实施最优性和广泛适应性。所设计采样区适应了发射窗口的变化,确保了飞行轨道方案保持不变。经过工程验证,所选择的采样区确保了“嫦娥五号”圆满完成了采样返回任务。

     

    Abstract: The mission trajectories of the Chang’E-5 are complicated with many constraints. Selecting a sampling area is largely determined by inseparable from the trajectory design. In this paper, the sampling area selection method based on the orbital geometry in the Chang’E-5 mission was first proposed and practiced. This method is constrained by principles of the most compact task schedule, the least fuel consumption, the most launch opportunities, and other requirements for sub-systems. First, the feasible sampling area range with the least of engineering implementation cost is calculated. And then the final sampling area range is determined by comprehensively considering the topographic safety and scientific value. Compared with the traditional method, this method considers the strong coupling between the location of the sampling area and the mission trajectory, which is unique to the lunar sampling return mission Besides, this method determines the location and range of the sampling area from the aspects of feasible engineering implementation and wide adaptability, thus ensuring the optimality and wide adaptability of the mission plan. Due to the launch vehicle, the established launch window has been postponed from 2017 to 2020. The designed sampling area range is updated to the new launch date, ensuring that the mission trajectory design remained unchanged. The design laid a solid foundation ensuring the complete success of the Chang’ E-5 Mission.

     

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