JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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Other TitleDevelopment of a small size measurement system for observing a surface charge
Author(jpn)籾山 弘行; 鈴木 祥太; 田中 康寛; 高田 達雄
Author(eng)Momiyama, Hiroyuki; Suzuki, Shota; Tanaka, Yasuhiro; Takada, Tatsuo
Author Affiliation(jpn)武蔵工業大学; 武蔵工業大学; 武蔵工業大学; 武蔵工業大学
Author Affiliation(eng)Musashi Institute of Technology; Musashi Institute of Technology; Musashi Institute of Technology; Musashi Institute of Technology
Issue Date2008-03-31
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title第4回宇宙環境シンポジウム講演論文集
Proceedings of the 4th Spacecraft Environment Symposium
Start page137
End page140
Publication date2008-03-31
AbstractThe purpose of this research work is to develop a small size measurement system to observe the surface charge distribution on insulator in vacuum chamber for space environmental test. Recently, a lot of satellites many purposes like a telecommunication, a weather report are being launched. These satellites are flying in a very severe space environment where the high energy radiations are scattered from the sun. In this environment, electrical charging phenomenon occurs on the insulation of spacecraft surface and electrical discharge or dielectric breakdown occurs by the high electric field. Therefore devices in spacecraft have a risk of failure. So we need to find out a mechanism for the occurrence of surface discharge on insulation and a best insulating materials for space conditions. Until now, my senior at our laboratory has made a measuring system of surface charging on insulation using the BSO (Bismuth Silicon Oxide) crystal has Pockels effect. The measuring system has been used the observation of surface discharging on insulation under conditions of non-destructive and non-contact. However this measuring system is large size and the techniques for setting an optical axis is hard. So it was difficult to apply the measuring system to the space environment simulator of small vacuum chamber. So we need to make a small size measurement system for surface discharging observation. By using a plate type light source of LED (Light Emitting Diode) and changing a optical type, the system area can be reduced 200 x 150 mm from 1,200 x 700 mm. Then we researched surface charging on BSO crystal and Kapton film, by using the small system. Then we researched measuring accuracy of the small system.
DescriptionJAXA Special Publication
Keywordssurface charging; charge distribution; spacecraft charging; aerospace environment; vacuum chamber; insulator; satellite surface; spacecraft construction material; electric discharge; 表面帯電; 電荷分布; 宇宙機帯電; 航空宇宙環境; 真空チェンバー; 絶縁材料; 衛星表面; 宇宙機構造材料; 放電
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-030

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