Modeling of Ejecta Produced upon Hypervelocity Impacts
Modeling of Ejecta Produced upon Hypervelocity Impacts
复制标题
超高速撞击时产生的喷射物的建模
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
J. Mandeville
中科院分区：
文献类型：
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作者：
M. Rival;J. Mandeville
每当碎片颗粒或流星体撞击轨道上的卫星时，在撞击地点附近就会喷射出大量的次级颗粒。这种现象对于易碎材料尤其重要，例如用于太阳能电池阵列或热控制涂料的材料。不影响航天器其他部件的次级颗粒被添加到主要碎片数量中，从而增加了小碎片颗粒通量。我们描述了一个抛射产生模型，该模型给出了抛射颗粒的大小和速度分布作为主要冲击参数的函数。该模型已被用于解释EuReCa航天器太阳能阵列上陨石坑分布的测量结果与模型之间的差异。
Each time a debris particle or a meteoroid strikes a satellite in orbit, a great amount of secondary particles is ejected in the neighborhood of the impact site. This phenomenon is important in particular for brittle materials, such as those used for solar arrays or thermal control paint. The secondary particles that do not impact other parts of the spacecraft are added to the primary debris population and hence increase the small debris particle flux. We describe an ejecta production model that gives the size and the velocity distribution of ejected particles as a function of primary impact parameters. The model has been used to explain the discrepancy between measurements and modeling of impact crater distribution on the solar arrays of the EuReCa spacecraft.