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首页> 外文期刊>Journal of guidance, control, and dynamics >Dynamic Mechanisms for Spacecraft Disposal from Sun-Earth Libration Points
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Dynamic Mechanisms for Spacecraft Disposal from Sun-Earth Libration Points

机译:从太阳地球的震动点处理航天器的动力机制

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This work investigates end-of-life trajectories for spacecraft in orbit about the sun-Earth L_1 and L_2 libration points. A decommission plan is often required during the mission design process. The spacecraft's natural departure dynamics are studied in both the circular restricted three-body problem and an ephemeris model. In particular, the roles of the unstable manifold and forbidden regions in determining disposal outcomes are considered. A close correspondence is observed between the models when computing the probabilities of return to the Earth neighborhood. A simple maneuver scheme, which uses regions partitioned by the zero-velocity surfaces to prevent returns to the Earth vicinity, is also analyzed. Disposal maneuver costs less than 50 m/s are possible for many initial libration point orbits during a decommissioning phase lasting less than one year.
机译:这项工作研究了航天器在轨道上关于太阳地球L_1和L_2释放点的寿命终止轨迹。在任务设计过程中通常需要退役计划。在圆形受限三体问题和星历模型中都研究了航天器的自然离开动力学。尤其要考虑不稳定歧管和禁区在确定处置结果中的作用。在计算返回地球邻域的概率时,在模型之间观察到了密切的对应关系。还分析了一种简单的机动方案,该方案使用由零速度表面划分的区域来防止返回地球附近。在持续不到一年的退役阶段中,许多初始释放点轨道的处置操作成本可能低于50 m / s。

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  • 来源
    《Journal of guidance, control, and dynamics》 |2015年第10期|1976-1989|共14页
  • 作者单位

    University of Barcelona, 08007 Barcelona, Spain,IEEC, Departament de Matematica Aplicada i Analisi, Gran Via 585;

    University of Barcelona, 08007 Barcelona, Spain,Departament de Matematica Aplicada i Analisi, Gran Via 585;

    Universitat Politecnica de Catalunya, 08028 Barcelona, Spain,Departament de Matematica Aplicada I, ETSEIB, Diagonal 647;

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