Preliminary study on sustained arc due to plasma excited by hypervelocity impact of space debris on the solar array coupon
Preliminary study on sustained arc due to plasma excited by hypervelocity impact of space debris on the solar array coupon
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DOI：
10.1016/j.ijimpeng.2006.09.016
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发表时间：
2006-12
影响因子：
5.1
通讯作者：
T. Harano;Yu Machida;S. Fukushige;T. Koura;S. Hosoda;M. Cho;Y. Akahoshi
中科院分区：
文献类型：
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作者：
T. Harano;Yu Machida;S. Fukushige;T. Koura;S. Hosoda;M. Cho;Y. Akahoshi
近年来，太阳能电池阵列的电位越来越高，电容越来越大。因此，指出了空间碎片与扩大的太阳能电池阵发生碰撞的可能性。许多碎片和灰尘撞击回收的卫星空间飞行器单元的机身和Eureca卫星的太阳能电池阵列叶片的情况得到证实。空间碎片与在轨卫星的太阳电池阵发生碰撞时，碎片撞击引起卫星部件的介质击穿，产生高密度等离子体，产生放电现象。这种放电使太阳能电池阵短路，电流将不会流入卫星的有效载荷。最坏的情况是卫星的运行结束。然而，尚不能证实碎片撞击产生的任何放电现象。但是，我们不能忽视碎片撞击产生放电的这种可能性。本文的目的是研究碎片撞击引起的放电条件，从而减少太阳电池阵的电功率，并减少碎片撞击对卫星任务的影响。在这项研究中，太阳能电池阵列的试样进行了测试下的超高速冲击，其中一个弹丸是由安装在九州工业大学（KIT）的两级轻气炮发射。验证了超高速撞击地面试验中的放电现象。
Recently, solar array has become higher in potential and larger in capacitance. Therefore, possibility of collision between space debris and enlarged solar array has been pointed out. Many debris and dust impacts were confirmed on fuselage of the retrieved satellite space flyer unit (SFU) and solar array paddle of satellite Eureca. If space debris collides with the solar array of an orbiting satellite, it may cause generation of high-density plasma by debris impact-induced dielectric breakdown of satellite component and the phenomenon called discharge. This discharge short circuits the solar array and current will not flow into pay load of the satellite. And the very worst event by this discharge is the operational end of the satellite. However, any events of discharge phenomenon by debris impact cannot be yet confirmed. But we cannot ignore such possibility of discharge by debris impact. The purpose of the present paper is to investigate discharge condition due to debris impact which yields us reduction of electric power of solar array, and to reduce influence of the impact on satellite missions. In this study, a solar array coupon was tested under hypervelocity impact in which a projectile was launched by a two-stage light gas gun installed in Kyushu Institute of Technology (KIT). As a result, we verified discharge event in the hypervelocity impact ground test.