远距离逆行轨道上的近距离自然及受控编队

Natural and non-natural close formation flight on distant retrograde orbits

远距离逆行轨道(DROs)是地月空间中一族稳定的周期轨道,适用于地月空间站等长期任务。为维持任务的长期存在,交会对接及编队飞行等任务是必要的。因此有必要分析远距离逆行轨道上的近距离相对运动解,并进行编队设计。首先,基于Floquet理论得到了远距离逆行轨道上的近距离线性化相对运动的基础解集,并对其解进行了分类与分析。其次,以基础解集中的自然周期解为基础设计了伴飞编队,并对其特性进行了全面分析。之后,针对圆形受控绕飞编队做了详细的分析,可用于指导后续受控编队的设计。最后,设计了两点之间的安全转移编队,可用于任意两点之间的转移,并保证转移过程中主星与副星之间具有足够的安全距离。

Distant Retrograde Orbits(DROs)are a kind of periodic orbits in the Earth-Moon system.DROs are appropriate for long-term missions due to favorable stability.Rendezvous and docking is a basic technology for the supplement of long-term missions,as well as close formation flying for some flying-around tasks.It is thus needed to analyze the close relative motion in DROs and furthermore develop close formation designs.Based on the Floquet theory,a fundamental solution for linear relative dynamics in DROs is obtained.A natural formation is designed based on the natural periodic solution for the linear relative dynamics.Characteristics of the natural formation are analyzed.Moreover,non-natural formations for fast circumnavigate is designed with impulse maneuvers.The fuel consumption of different types of circular reference orbits are analyzed to guide formation designs.Finally,a type of reference trajectories is designed for transfer between two arbitrary positions with safety guaranteed.