模擬静止軌道環境下における太陽電池アレイ表面のフラッシオーバ放電の伝搬範囲

摘要

Flashover discharge on the solar array is an issue of spacecraft charging, because the discharge potentially causes the catastrophic failure of a satellite. The discharge experiment on solar array has been carried out to investigate the propagation area of flash-over discharge. During the flash-over discharge, neutralization current flows on the solar array strings. The charge of neutralization current was calculated to investigate the relationship between the charge and the distance from the cathode spot. The experiment result in the maximum propagation area of flash-over plasma is 3m in simulated geostationary orbit.%静止軌道のプラズマ環境における太陽電池アレイ上のフrnラッシオーバ放電の伝搬距離を調べるために，模擬静止軌rn道プラズマ環境下で放電試験をおこなった。放電試験に用rnいた太陽電池アレイクーポンパネルの総面積は約5m~2で，rn放電試験に用いられた太陽電池アレイクーポンパネルの面rn積としては世界最大である。