欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
结合从月球停泊轨道直接返回地球的月地转移轨道设计,提出了一种月地返回窗口的搜索策略.首先基于双二体模型,结合月地转移轨道快速设计进行当天最小再入角的计算,根据当天最小再入角的计算结果初步判断返回窗口,然后指定再入角约束,在初步返回窗口内搜索满足两端约束条件的双二体月地转移轨道.然后将该轨道作为初值,基于受摄双二体模型,采用数值积分和微分改正法进一步求解精确的月地转移轨道.最后根据精确轨道计算结果,特别是速度增量,进一步确定返回窗口.这种策略大大加快了计算返回窗口的效率,可以在大范围内快速搜索返回窗口.通过对201 7年1月和2月返回窗口的搜索及对结果的分析,最终给出了满足最省燃料和3天连续返回的窗口建议.
英文摘要：
Based on the design of Moon-to-Earth trajectories which directly return to the Earth from the Moon parking orbit,a search strategy for back windows is presented.First,combined with the rapid design of Moon-to-Earth transfer trajectories based on double two-body model,an initial back window is primarily estimated according to minimum reentry angle calculations at that day.If the minimum reentry angle is within the reentry corridor,then the double two-body trajectory which meets the constraints at both ends is searched with the prescribed reentry angle constraint.The results are used as initial values for subsequent precise design of Moon-to-Earth transfer trajectories based on perturbed models.The precise trajectory is obtained by using numerical integration and differential correction.The back window is further determined by the results of the precise trajectories,especially the velocity increment.This strategy greatly accelerates the computational efficiency of the back window,and the window can be quickly found in a wide range.Through the search and results analysis of back windows in January and February 2017,a feasible back window which satisfies fuel-optimal and three consecutive return possibilities is finally proposed.
同期刊论文项目
同项目期刊论文
期刊信息
位置：