Earth-moon libration point interorbital transfer design method

Abstract

The invention relates to an earth-moon libration point interorbital transfer design method. The method comprises the following steps that a, under the earth-moon mass center rendezvous coordinate system, an orbital kinetic equation of a detector is built; b, libration point invariant manifold data are stored; c, a transfer track splicing point range is searched; and d, a libration point interorbital optimal transfer track is determined. According to the libration point track invariant manifold state amount, splicing point positions of different track segments are rapidly determined, positionsof escape points and capture points are automatically adjusted, and the target track size are adjusted automatically, and the low-energy transfer track capable of meeting the task needs can be effectively designed.

Description

technical field [0001] The invention relates to the technical field of spacecraft orbit design and optimization, in particular to a design method for transfer between orbits of Earth-Moon translation points. Background technique [0002] There are five translation points in the Earth-Moon three-body system, among which L1 and L2 points are located on both sides of the moon, which are the best landing points for the implementation of lunar exploration missions. In 2011, NASA proposed to design an outpost plan at the Earth-Moon translation point, which can not only detect changes in the Earth-Moon space environment, but also serve as a transit station for future Earth-Moon space material transportation visits, Mars exploration, and manned asteroid missions. At the same time, there are often low-energy transfer orbits between the orbits of the translation points near the L1 and L2 points of the Earth-Moon system. Combining this type of orbit for extended tasks can effectively e...

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Problems solved by technology

For the optimal transfer trajectory of fuel between different types of orbits near the 3 collinear translation points and 2 triangular translation points, the selection basis of the feature points and the influence of different feature points on the fuel consumption of the detector are not given (Zeng Hao ,ZhangJingrui.Modeling low-thrust transfers between periodic orbits about fivelibration points:manifolds and hierarchical design[J].Acta Astronautica,2018,145:408-423)

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