Mission design of the CHANG'E-2 asteroid exploration

被引:0
作者
Liu, Lei [1 ,2 ]
Liu, Yong [1 ,2 ]
Cao, Jian-Feng [1 ,2 ]
Tang, Ge-Shi [1 ,2 ]
Zhou, Jian-Liang [2 ]
机构
[1] Science and Technology on Aerospace Flight Dynamics Laboratory
[2] Beijing Aerospace Control Center
来源
Yuhang Xuebao/Journal of Astronautics | 2014年 / 35卷 / 03期
关键词
Asteroid; CHANG'E-2; Deep space exploration; Differential correction; Transfer trajectory;
D O I
10.3873/j.issn.1000-1328.2014.03.003
中图分类号
学科分类号
摘要
Transfer trajectory design of the CHANG'E-2 asteroid exploration mission planned to further validate our deep space exploration capability and utilize the remaining propellant after the Sun-Earth/Moon libration point mission is studies in this paper. Firstly, the orbit distribution and kinetic characteristics of the catalogued asteroids at present are analyzed. The appropriate asteroids are selected. Secondly, the transfer trajectory design based on the differential correction is studied. The iterative convergence is improved by constraining the correction variant. As a result, the transfer trajectory design flow of global searching is presented. Finally, the transfer trajectory with the least propellant consumption is designed according to the accurately CHANG'E-2 orbit and the propellant constraint. The TT&C condition of the transfer trajectory is also analyzed. The research result shows that the appropriate asteroids in 2012 are 4179 (Toutatis) and 214869 (2007 PA8), and the least velocity increment is about 97.312 m/s for 4179 flying-by. Therefore the remaining propellant is sufficient for the mission. Furthermore, the domestic tracking stations can meet the TT&C needs.
引用
收藏
页码:262 / 268
页数:6
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