Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (2): 420-426.doi: 10.3969/j.issn.1001-506X.2020.02.22

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Optimal design of the Moon-Earth emergency return trajectories

Lin LU(), Haiyang LI(), Jianghui LIU(), Luyi YANG()   

  1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2019-05-06 Online:2020-02-01 Published:2020-01-23
  • Supported by:
    国家自然科学基金(11372345);载人航天预先研究项目资助课题(010201)

Abstract:

The three-impulse trajectories are optimally designed for the emergency return problem in the manned lunar landing mission. The motion equations of lunar return trajectories are adopted in the spherical frame based on the model of the circulunar restricted three body problem. The Moon-Earth emergency return trajectories concerning the constraints of circular orbit plane, minimum safe distance with respect to the Moon and terminal perigee height are optimized globally by using the MultiStart algorithm. The effectiveness and reliability of the proposed approach are demonstrated by the simulation tests. Finally, according to a great deal of simulation results by the method, the effects of different orbit parameters on optimization objective are analyzed. The research conclusions can provide references for the design of emergency return trajectory scheme in the manned lunar landing mission in the future.

Key words: manned lunar landing, emergency return, circular restricted three body problem (CR3BP), global optimization

CLC Number: 

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