Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)
Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)
Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Technology Directorate I, Japan Aerospace Exploration Agency (JAXA)
Tokushima University
Tokai University
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
出版者
宇宙航空研究開発機構(JAXA)
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構特別資料: 第7回スペースデブリワークショップ講演資料集
雑誌名(英)
JAXA Special Publication: Proceedings of the 7th Space Debris Workshop
Loss of satellite functions due to space debris collisions includes not only mechanical failures like breakup of satellite main bodies but also electric failures such as decrease in power supply from solar arrays and power harnesses. In particular, the past hypervelocity impact experiments suggest that sustained arcs and resulting ground faults on the power harnesses could be triggered by impacts of tiny space debris particles smaller than 1 mm which constantly impact on satellite surfaces. To perform the appropriate satellites' design for debris protection, it is important to adequately assess the risk of electrical failures on the satellite power harnesses. This presentation reports the results of hypervelocity impact experiments with more realistic impact conditions and simulated internal circuits than the past studies. In the experiments, single particles of aluminum oxide smaller than 1 mm were accelerated to nearly 7 km/s by the two-stage light gas gun of JAXA/ISAS. Our results suggest that the risk of fatal electric failure on a single line of power harness routed behind the solar array paddles is lower than that expected from the past studies.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
Electrical failure on satellite's power harnesses due to small debris impacts
AA1630052028.pdf
(12.44MB)
