JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleResearch on damage shapes of solar cells due to collision with space debris
Author(jpn)中嶋 恭柄; 花田 俊也; 平山 寛; 河村 知浩
Author(eng)Nakashima, Kyohei; Hanada, Toshiya; Hirayama, Hiroshi; Kawamura, Tomohiro
Author Affiliation(jpn)九州大学; 九州大学; 九州大学; 三菱電機 鎌倉製作所
Author Affiliation(eng)Kyushu University; Kyushu University; Kyushu University; Mitsubishi Electric Corporation Kamakura Works
Issue Date2006-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第25回宇宙エネルギーシンポジウム 平成17年度
The Twenty-fifth Space Energy Symposium March 10, 2006
Start page50
End page54
Publication date2006-06
AbstractWe know that debris impacts to solar cell paddles in GEO (Geostationary Earth Orbit) are very often, so the damages of solar cell paddles have a great influence on the operation of a satellite. This paper summarizes some of low-velocity solar cell impact tests conducted at the Kyushu University. The objective of the tests was to investigate the influence of impacts on the capacity of power generation of solar cells and the connection between the impact velocity and the damage shape of solar cells. The experiments stated in this paper were performed at low velocities of 91 m/s, 142 m/s, 189 m/s, 250 m/s, 284 m/s, 668 m/s and other three values using 47-milligram aluminum alloy spheres. The target plates were solar cells attached to aluminum-honeycomb sandwich panels having CFRP (Carbon Fiber Reinforced Plastic) face-sheets. The solar cells were 60 mm x 40 mm x 0.24 mm in size and the aluminum-honeycomb sandwich panels having CFRP face-sheets were 100 mm x 100 mm x 10 mm in size. The capacity of power generation of solar cells was lost when a slight damage was found, but the capacity was hardly lost when a comparatively large damage was found. The forecast of the impact velocity was possible to some degree from the damage level or the damage ratio. The damage level was defined by the diameters of hole of the target caused by an impact and the damage conditions of the target and the damage ratio was defined by the ratio of the diameters of hole caused by an impact to the diameter of a projectile. More detailed analysis results are presented in this paper.
Keywordsspace debris; solar cell paddle; impact damage; hypervelocity impact; stationary orbit; solar cell; damage assessment; meteoroid; 宇宙デブリ; 太陽電池パドル; 衝撃損傷; 極超音速衝突; 静止軌道; 太陽電池; 損傷評価; 流星物質
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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