太阳帆航天器三维人工平动点变化特性研究

本文研究了太阳帆航天器在光压因子、锥角和钟角共同作用下的三维人工平动点的变化特性。在光压因子较小的时候，五个平动点会拓展成五个不相连的“人工”平动点面。随着光压因子增大，平动点面SL 3 ，SL 4 和SL5将逐渐扩大并互相融合，最终延展至SL 1 与之融合。而平动点面SL2则始终保持独立的球面，只随着光压因子的增大而扩大但不与其它平动点面发生融合。平动点位置的改变，意味着对应的周期轨道也随之改变，这为平动点周期轨道的转移等任务提供了有效参考。

Study on Variation Characteristics of Three Dimensional Artificial Libration Point of Solar Sail Spacecraft

The variation characteristics of three-dimensional artificial libration points of a solar sail spacecraft under the combined action of the light pressure factor, cone angle and bell angle are studied. When the light pressure factor is small, the five libration points will be expanded into five unrelated “artificial” libration points. With the increase of the light pressure factor, the libration point surfaces SL 3 , SL 4 and SL5 will gradually expand and mix with each other, and eventually extend to SL1 and mix together. However, SL 2 always keeps its own ball sphere, which enlarges only with the increase of the light pressure factor, but does not merge with other libration points. The change of the position of the libration point means that the corresponding periodic orbits also change, which provides an effective reference for the tasks such as the transition of the periodic orbits of the libration point.