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不规则小行星引力场内的飞行动力学

李俊峰 曾祥远

李俊峰, 曾祥远. 不规则小行星引力场内的飞行动力学[J]. 力学进展, 2017, 47(1): 429-451. doi: 10.6052/1000-0992-16-042
引用本文: 李俊峰, 曾祥远. 不规则小行星引力场内的飞行动力学[J]. 力学进展, 2017, 47(1): 429-451. doi: 10.6052/1000-0992-16-042
LI Junfeng, ZENG Xiangyuan. Flight dynamics in the gravitational fields of irregular asteroids[J]. Advances in Mechanics, 2017, 47(1): 429-451. doi: 10.6052/1000-0992-16-042
Citation: LI Junfeng, ZENG Xiangyuan. Flight dynamics in the gravitational fields of irregular asteroids[J]. Advances in Mechanics, 2017, 47(1): 429-451. doi: 10.6052/1000-0992-16-042

不规则小行星引力场内的飞行动力学

doi: 10.6052/1000-0992-16-042
详细信息
    作者简介:

    李俊峰, 1964年出生, 1987年获北京大学力学系学士学位, 1993年获莫斯科大学数学力学系博士学位, 1995年在清华大学工程力学系博士后出站, 现任清华大学航天航空学院教授.近30年从事航天动力学、运动稳定性、天体力学、卫星姿态控制、充液系统晃动等方面的科研工作, 主讲理论力学、运动稳定性、航天器动力学、飞行器姿态控制系统、高等动力学、现代航天技术概论等课程. E-mail: lijunf@tsinghua.edu.cn

    通讯作者:

    曾祥远, E-mail: zeng@bit.edu.cn

  • 中图分类号: P185.7

Flight dynamics in the gravitational fields of irregular asteroids

More Information
  • 摘要: 小行星探测是当前深空探测的主要方向之一, 具有重要的科学意义.绝大多数小行星引力场极不规则, 探测器在小行星附近运动形态复杂多样.由于同时受到中心引力、快速自旋的不规则形状摄动力、以及光压摄动等作用, 探测器容易与小行星发生碰撞或逃逸.概述小行星研究现状和不规则引力场建模方法.重点介绍不规则引力场内动力学特性, 包括引力平衡点、局部流形、自然周期轨道和悬停探测轨道等, 尝试提出新的研究方向.

     

  • 图  1  人类航天器探测过的小天体等比缩放排列图

    图  2  小行星Itokawa不同引力场建模方法.(a) 级数展开法参考球, (b) 级数展开法参考椭球, (c) 质点群法示意图, (d) Itokawa多面体模型

    图  3  旋转偶极子近似细长小行星及其改进模型.(a) 偶极子近似Itokawa引力场, (b) 考虑二阶项的改进偶极子模型

    图  4  小行星Geographos引力场内周期轨道示例.(a) 共线平动点局部周期轨道, (b) 非共线平动点局部周期轨道, (c) 草帽轨道, (d) 类8字形轨道

    图  5  小行星引力场内太阳帆航天器本体悬停轨道.(a) 球形小行星附近悬停轨道, (b) 细长小行星本体悬停轨道

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  • 收稿日期:  2016-11-15
  • 网络出版日期:  2017-01-20
  • 刊出日期:  2017-02-24

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