基于组合机动的空间V-bar交会策略

Study on the Strategy for Space V-bar Rendezvous Based on Combined Maneuver

提出了一种基于切向脉冲与径向连续常推力组合机动的空间V-bar交会策略。从绝对运动与相对运动两方面推导了维持追踪航天器圆轨道运行的组合机动的运动规律,给出了V-bar接近段与逼近段的制导律。在接近段,匀速直线接近,无需考虑视界约束的限制,转移时间控制灵活;在逼近段,先以大速率等速逼近,再切换为小速率等速逼近,切换过程可以灵活控制,制导简单,自然满足直线型标称轨迹要求,安全性好。

Based on the combination of a tangential impulse maneuver and a constant continuous radial thrust maneuver, a new strategy for space V-bar rendezvous was presented. The absolute and relative motions of the chaser in combined maneuvers were investigated when it maintains its initial circular orbit. Then the guidance hales of space rendezvous V-bar approach and final translation were derived respectively. For V-bar approach, the chaser makes straight line motion at constant velocity while no constraints need to be considered in the transfer duration and llne of sight, resulting in a flexible transfer in time. For V-bar final translation, the chaser＇ s straight line motion is switched from a higher constant speed to a smaller docking velocity at the given position. The process is easy to guide and control, satisfying the requirement of the chaser＇s transfer to be straight and safe.