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Alternative TitleFagmentation Analysis of Cosmos 2421 Satellite
王荣兰; 刘静; 张庆明; 北京8701信箱
Source Publication空间科学学报
Keyword解体事件 解体碎片 轨道变化 速度增量
Abstract2008年上半年俄罗斯的Cosmos 2421卫星接连发生了三次不同程度的解体,并产生了数百颗碎片.本文利用美国公布的Cosmos 2421卫星及其碎片的两行根数系列,对三次解体事件发生的时间,解体碎片的轨道分布、速度分布和面积质量比以及寿命等进行了分析,并对解体碎片对航天器的影响进行了评估.分析结果表明,Cosmos2421卫星的三次解体事件分别发生在2008年3月14日、4月28日、6月9日;解体碎片分布在200~1400km的高度范围内;Cosmos 2421卫星解体导致的碎片在空间三个方向上的速度增量均值分别为-8.4m/s,8.6 m/s,-8.3 m/s;67%的解体碎片的寿命都在1年以内,解体事件造成500 km以下的空间碎片空间密度增加,对载人航天器产生了影响.通过对Cosmos 2421卫星解体事件的分析可以看出,利用解体碎片的轨道信息可以反演解体事件特性,根据解体碎片的寿命和空间密度分布的计算结果可以评估解体事件对未来发射活动和在轨卫星的影响.
Other AbstractThree fragmentations with different degrees had occurred successively for Russian Cos- mos 2421 satellite in the first half of year 2008 which produced several hundreds debris. This paper analyzed the three fragmentations and fragmentation debris orbit distribution, velocity increment distribution, area-to-mass ratio and their lifetime according to two-line elements data of Cosmos 2421 satellite and its debris, also made risk evaluation of fragmentation debris to spacecrafts. The results indicate: that the three fragmentation dates were March 14, April 28 and June 9 respectively. The fragmentation debris were distributed within 200}1400km altitude range. The three velocity increments mean values of fragmentation debris in space due to Cosmos 2421 satellite breakup were一8.4 m/s, 8.6 m/s,一8.3 m/s respectively. The lifetime of 67 percent fragmentation debris were within one year. Space debris density below 500 kilometers increased because of the breakup event which affected the manned spacecrafts. It can be seen by analyzing the Cosmos 2421 satellite fragmentation events that breakup events characteristic can be concluded by fragmentation debris characteristic,and the effects to the future launch activity and in-orbit satellite due to breakup events can be eval- uated by space density and lifetime computation of fragmentation debris.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
王荣兰,刘静,张庆明,等. Cosmos2421卫星解体事件分析[J]. 空间科学学报,2010,30(1):43-48.
APA 王荣兰,刘静,张庆明,&北京8701信箱.(2010).Cosmos2421卫星解体事件分析.空间科学学报,30(1),43-48.
MLA 王荣兰,et al."Cosmos2421卫星解体事件分析".空间科学学报 30.1(2010):43-48.
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