Efficient optimization method for variable-specific-impulse low-thrust trajectories with shutdown constraint

Jia, Feida; Dong, Qiao; Han, Hongwei; Li, Xiangyu

doi:10.1007/s11431-021-1949-0

Cited by 4 publications

(1 citation statement)

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“…For the Earth-to-Moon trajectory design, researchers have developed multiple trajectory design technologies. The traditional impulse transfer is the classic method adopted by the first Moon exploration missions [27,28], while the small thrust transfer [29][30][31][32][33][34][35] and the weak stable boundary (WSB) transfer methods [36][37][38] appeared in the 1990s. In recent years, there have been the use of Moon flybys to achieve libration point transfers and even the deployment of Earth's high-orbit satellites [39,40].…”

Section: Introductionmentioning

confidence: 99%

Integrated Design of Moon-to-Earth Transfer Trajectory Considering Re-Entry Constraints

et al. 2022

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The exploration of the Moon has always been a hot topic. The determination of the Moon-to-Earth transfer opportunity and the design of the precise transfer trajectory play important roles in manned Moon exploration missions. It is still a difficult problem to determine the Moon-to-Earth return opportunity for accurate atmospheric re-entry and landing, through which the actual return trajectory can be easily obtained later. This paper proposes an efficient integrated design method for Moon-to-Earth window searching and precise trajectory optimization considering the constraints of Earth re-entry and landing. First, an analytical geometry-based method is proposed to determine the state of the re-entry point according to the landing field and re-entry constraints to ensure accurate landing. Next, the transfer window is determined with the perilune heights, which are acquired by inversely integrating the re-entry state under the simplified dynamics as criterion. Then, the precise Moon-to-Earth trajectory is quickly obtained by a three-impulse correction. Simulations show the accuracy and efficiency of the proposed method compared with methods such as the patched-conic method and provide an explicit reference for future Moon exploration missions.

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