Abstract

This study is devoted to searching for lunar orbits that are accessible during departure along an unstable invariant manifold of halo orbits around lunar libration points L₁ and L₂. The spacecraft is assumed to be equipped with a low-thrust engine. Two levels of jet acceleration from the typical range of small-size spacecraft with low-thrust engines are considered. The study consists of two parts: (1) searching for osculating lunar orbits obtained during passive motion from halo orbits and (2) stabilization of orbits by the thrust force, directed against the spacecraft velocity. Many halo-orbits were found, the descent from which along the unstable manifold makes it possible to reach polar and near-polar orbits. The problem is solved within the model of a circular, restricted three-body problem.

中文翻译：

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低推力从月球摆动点L 1和L 2周围的晕圈转移到月球轨道

摘要

这项研究致力于寻找沿月球解放点L ₁和L ₂周围的不稳定的晕圈不变流形出发时可到达的月球轨道。。假定该航天器装有低推力发动机。考虑到小型推力发动机在小型航天器的典型射程中的两个水平的喷气加速度。该研究包括两个部分：（1）搜索从晕圈轨道进行被动运动期间获得的月球轨道，以及（2）通过针对航天器速度的推力稳定轨道。发现了许多晕圈轨道，沿其下降沿不稳定的流形可以到达极地轨道和近极地轨道。在圆形受限三体问题模型中解决了该问题。