地球同步轨道卫星混合推进转移轨道特性分析

以地球同步轨道卫星转移轨道设计为背景，针对全化学推进燃料消耗大和全电推进转移时间长的问题，开展了化学 电混合推进转移轨道优化设计与特性分析。首先，讨论了轨道倾角和近地点幅角变化对混合推进转移轨道的影响。研究表明，在混合推进优化设计中需要将轨道倾角作为优化变量之一。然后，以近地点半径、远地点半径、轨道倾角为优化变量生成搜索网格，得到过渡轨道集。针对每条过渡轨道，构建化学推进转移段和电推进转移段。其中化学推进段采用单圈兰伯特转移解算，电推进段采用混合法优化。最后，以燃料消耗和转移时间为指标，在搜索域内开展解算分析，研究了混合推进轨道在整个搜索域内的变化趋势。该方法可以提供具有不同燃料消耗和转移时间的混合推进转移解集，拓宽了解空间，可供轨道设计人员根据任务约束灵活选用。

Characteristics analysis of hybrid propulsion geostationary orbit

Taking the transfer orbit design of the geosynchronous orbit satellite as mission background, the hybrid chemical electric propulsion orbit transfer was designed and analyzed to address the problems of great fuel consumption of fully chemical propulsion and long transfer time of fully electric propulsion. Firstly, the influence of inclination and argument of perigee of switching orbit on transfer performance was analyzed. Analysis indicates that inclination should be used as one of the optimization variables. Secondly, the perigee radius, apogee radius and inclination of the switching orbit were used as optimization variables to construct the search grid. Each point in the grid corresponded to one switching orbit. For each switching orbit, a chemical propulsion orbit segment and an electric propulsion orbit segment were computed separately. The chemical propulsion segment was achieved by Lambert transfer, and the electric propulsion segment was achieved by using hybrid method for optimization. Finally, taking fuel consumption and transfer time as design index, exhaustive search for the switching orbits in the search grid was implemented, and the trend of hybrid propulsion transfers in the entire solution space was analyzed. The method proposed provides a family of solutions, filling the gap between the fully chemical transfer solution and fully electric transfer solution. The solutions have different combinations of fuel consumption and transfer time, and can be used in future missions.