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titleデブリ衝突により起こる太陽電池アレイの持続放電の閾値
Other TitleThreshold of sustained arc by space debris impact on solar array
Author(jpn)長崎 俊和; 福重 進也; 赤星 保浩; 渡辺 圭子; 菅原 賢尚; 高良 隆男; Cho, Mengu; 原田 昭治
Author(eng)Nagasaki, Toshikazu; Fukushige, Shinya; Akahoshi, Yasuhiro; Watanabe, Keiko; Sugahara, Kensho; Kora, Takao; Cho, Mengu; Harada, Shoji
Author Affiliation(jpn)九州工業大学 大学院工学研究科; 九州工業大学 大学院工学研究科; 九州工業大学 工学部 機械知能工学科; 大阪大学; 九州工業大学 工学部 機械知能工学科; 九州工業大学 工学部 機械知能工学科; 九州工業大学 工学部 電気電子工学科; 九州工業大学 工学部 機械知能工学科
Author Affiliation(eng)Kyushu Institute of Technology Graduate School of Engineering; Kyushu Institute of Technology Graduate School of Engineering; Kyushu Institute of Technology Department of Mechanical and Control Engineering, Faculty of Engineering; Osaka University; Kyushu Institute of Technology Department of Mechanical and Control Engineering, Faculty of Engineering; Kyushu Institute of Technology Department of Mechanical and Control Engineering, Faculty of Engineering; Kyushu Institute of Technology Department of Electrical Engineering and Electronics, Faculty of Engineering; Kyushu Institute of Technology Department of Mechanical and Control Engineering, Faculty of Engineering
Issue Date2008-05
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
宇宙航空研究開発機構宇宙科学研究本部
Publication title第27回宇宙エネルギーシンポジウム 平成19年度
The Twenty-seventh Space Energy Symposium
Start page54
End page58
Publication date2008-05
Languagejpn
AbstractIn recent years, space debris increases because many rockets and satellites have been launched. A solar array of a spacecraft has become larger with the higher voltage and electrical power. Therefore, the risk of debris impact and possibility of discharge on the solar array is increasing. If space debris impacts solar array, it electric power decreases or loses. When space debris impact on the solar array, high-density plasma is discharged. The arc that led may generate the plasma. This is Temporary Sustained Arc. This discharge can lead to carbonize the insulation layer of the solar array by Joule heat due to the large current through the plasma, and form permanent short-circuit. If this phenomenon continues, a permanent short circuit course will be formed between a solar cell and a substrate. This is Permanent Sustained Arc. It causes decrease or loss of generating capacity of a solar array coupon. In this study, the first purpose is verified that sustained arc is discharged or not by space debris impacts on solar array. The second purpose is elucidated the threshold of sustained arc. We want to reduce the influence affect the missions of a satellite by those results. Therefore, we took notice a density and electron temperature of the plasma which induce to discharge and clarified the threshold of sustained arc generating for hypervelocity impact test by two-stage light gas gun. The triple probe method was used plasma measurement test. The results show that electron temperature and electron density have correlation with impact speed, and the plasma density is higher than the plasma environment on low earth orbit. A possibility of TSA (Temporary Sustained Arc) generation is large over 80 [V], and generating of PSA (Permanent Sustained Arc) was confirmed over 183 [V]-2.4 [A] of power supply voltage. The generating conditions of PSA are sustaining voltage is 50 [V], current is 2.2 [A] and dissipation power of discharge circuit is 110 [W]. Therefore, it is desirable that dissipation power of the satellite is less than 110 [W] for preventing generating of PSA.
Keywordsaerospace environment; solar array; spacecraft power supply; sustained arc; space debris; hypervelocity impact; short circuit; impact velocity; electron density; low Earth orbit; 航空宇宙環境; 太陽電池アレイ; 宇宙機給電; 持続放電; 宇宙デブリ; 超高速衝突; 短絡; 衝突速度; 電子密度; 低高度地球周回軌道
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
SHI-NOAA0063965011
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/49793


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