Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (4): 896-903.doi: 10.3969/j.issn.1001-506X.2020.04.21

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Fast Moon-to-Earth return orbit design based on improved multi-conic method

Luyi YANG(), Haiyang LI(), Jin ZHANG(), Wanmeng ZHOU(), Lin LU()   

  1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2019-09-16 Online:2020-03-28 Published:2020-03-28
  • Supported by:
    国家自然科学基金(11572345);载人航天预先研究项目(010201)

Abstract:

To optimize and design the return orbit from the Moon to the low Earth space station, an accurate and rapid approach based on the improved multi-conic method is proposed. It is different from Moon-to-Earth trajectories directly reentering the Earth atmosphere, where the coplanar constraints of the space station should be considered. Firstly, the flight process is analyzed and the optimization model is built with backward integration strategy. Then, based on the orbital geometric relationship in the cislunar space, an estimation method is proposed to determine the initial value of the perilune window and other orbital parameters. The improved multi-conic model is combined with the high-fidelity model and the transfer orbit is optimized rapidly and accurately with a cascade searching strategy. Simulation results show that the proposed solution strategy is effective and has good convergence. The fundamental patterns of the transfer window, perilune window and velocity increment are also revealed.

Key words: multi-conic method, Moon-to-Earth return orbit, Earth-centered Earth-to-Moon plane coordinate, low Earth space station, departure domain

CLC Number: 

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