| Project/Area Number |
15K14253
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Aerospace engineering
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| Research Institution | Kobe University |
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Principal Investigator |
Yokota Kumiko 神戸大学, 工学研究科, 助手 (20252794)
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| Co-Investigator(Kenkyū-buntansha) |
田川 雅人 神戸大学, 工学研究科, 准教授 (10216806)
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| Co-Investigator(Renkei-kenkyūsha) |
TERAOKA Yuden 量子科学技術研究開発機構, 量子ビーム科学研究部門, 上席研究員 (10343922)
HAYAKAWA Hajime 宇宙航空研究開発機構, 宇宙科学研究所, 教授 (90167594)
MATSUMOTO Koji 宇宙航空研究開発機構, 研究開発本部, 主幹研究員 (10470072)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 宇宙環境 / 材料劣化現象 / 火星 / 高層大気 / 火星高層大気 / 材料劣化 / 地上シミュレーション / 火星大気 / 二酸化炭素 / 酸素原子 / エアロブレーキング |
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| Outline of Final Research Achievements |
The upper Martian atmosphere mainly contains carbon dioxide (CO2) and atomic oxygen (AO) depending on the altitude. Spacecraft orbiting in the Martial upper atmosphere encounters high-energy collision with these molecules. In order to evaluate a risk of material erosion possibilities in Martian orbit, a method for ground-based Martian atmospheric simulation was investigated. A laser-detonation hyperthermal beam source was applied and newly designed pulsed supersonic valve (PSV) system, which contains two PSVs into one nozzle, was developed for the Martian atmospheric simulation experiments. It was confirmed that the two gases could be introduced from PSVs individually and successfully formed hyperthermal beams. This configuration allows increasing the freedom of hyperthermal beam formation by mixing two types of gases.
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