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

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Other TitleThe electric power system's low-cost development for small satellite QTEX-PR
Author(jpn)Kim, Ieyoung; 大石 篤; 平山 寛; 花田 俊也
Author(eng)Kim, Ieyoung; Oishi, Atsushi; Hirayama, Hiroshi; Hanada, Toshiya
Author Affiliation(jpn)九州大学 大学院工学研究院; 九州大学 大学院工学研究院; 九州大学 大学院工学研究院; 九州大学 大学院工学研究院
Author Affiliation(eng)Kyushu University Graduate School of Engineering; Kyushu University Graduate School of Engineering; Kyushu University Graduate School of Engineering; Kyushu University Graduate School of Engineering
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 page21
End page25
Publication date2006-06
AbstractThe electric power system is most important and needs high reliability and solar battery and secondary battery is most expensive part for small satellite. That high cost of the electric power system is a burden for the development of small satellite by university students' team. In this paper, we try reduce the price of development by testing the commercial-off-the-self component under the space environment. There are four tests in the environmental tests: vibration test, vacuum test, isothermal test, and radiation-proof test. We experimented the environmental test of electric power system's parts: solar cell for ground, Li-ion battery, and microprocessor. From the result of tests, we confirmed that solar cell for above ground can be used in space by contriving ways to attach cells on the satellite. And we need to consider the power generation which change in vacuum environment. Li-ion battery sealing up is also enough to be used in space. By forecasting generation of heat and endothermic behavior at the electrical charge and discharge of Li-ion battery, we can use it for the heat design. At the last, we tested the semiconductor material device. From the four environmental tests, we know that semiconductor material device is useful in space. And we can forecast the lifetime on orbit of satellite by radiology test. In these experiments, we can know that these parts can be used on the satellite in space. Above these experiments, we need to conduct the heavy ion irradiation test for a more accurate measurement.
Keywordscommercial off-the-shelf product; spacecraft power supply; small satellite technology; small scientific satellite; cost reduction; lithium-ion battery; aerospace environment; environmental test; solar cell; thermal environment; charge/discharge cycle test; 民生品; 宇宙機給電; 小型衛星技術; 小型科学衛星; 経費削減; リチウムイオン電池; 航空宇宙環境; 環境試験; 太陽電池; 熱環境; 充放電サイクル試験
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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