北京航空航天大学学报 ›› 2006, Vol. 32 ›› Issue (02): 148-152.

• 论文 • 上一篇    下一篇

空间碎片云演变过程的阶段划分

董云峰, 肖业伦, 刘佳, 廷页   

  1. 北京航空航天大学 宇航学院, 北京 100083
  • 收稿日期:2005-08-12 出版日期:2006-02-28 发布日期:2010-09-20
  • 作者简介:董云峰(1965-), 男, 内蒙古包头人, 副教授, sinosat@buaa.edu.cn.
  • 基金资助:

    国家863计划资助项目(2004AA811054)

Orbital debris clouds evolution phase definition

Dong Yunfeng, Xiao Yelun, Liu Jia, Wang Ting   

  1. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2005-08-12 Online:2006-02-28 Published:2010-09-20

摘要: 根据碎片云从破碎点开始向空间扩散过程中碎片密度和形状的变化规律,以几何形状和起主要作用的因素为特征,定义了球形、椭球形、绳形、螺旋线形、全方位弥漫直至球壳形六个演变阶段.论述了在各个阶段的主要特征和对演变过程起主要作用的因素.总结了与演变过程相关的轨道运动理论和研究方法,分析了各个阶段演变的动力学原理.在球形阶段起主要作用的是分离速度;椭球形阶段可以利用线性化相对运动方程进行分析;绳形与螺旋线形在几何上有质变,但都有结点和结线,并可以利用速度增量理论分析和解释其存在的原因.轨道摄动力消除了结点和结线,导致碎片云的全方位弥漫,并最终使碎片云趋于球壳形.推导和罗列了各阶段转换标志点时刻的计算公式,利用计算机仿真的方法,给出了近地轨道各个阶段碎片云分布示意图,验证了演变过程阶段划分的合理性.

Abstract: Orbital debris clouds evolution phase was defined as sphere, spheroid, rope, spiral, spreading and shell, based on the geometry shape and debris density in the evolution from the initial breakup point to the final coverage of earth. The shape character and the key drive sources were addressed in each phase. Space craft orbital mechanics theory and research method were reviewed. The evolution dynamics principle was analyzed. The separate velocity decides the shape and size during the sphere phase. Linear relative motion differential equation can be used to reduce the debris density model. Rope and spiral is distinguished from geometry, orbital maneuver theory is used to analysis the existence of pinch point and pinch line. The orbital perturbation differences of each debris in clouds eliminate the pinch region and induce the omnibearing spreading and the final figuration of the shell. The time mark between the phases was given and calculation formula was reduced and listed. The debris clouds evolution phase was visualized through computer simulation and the phase definition rationality was verified.

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