| Project/Area Number |
26630447
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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 | Osaka Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | グロープラグ / ガス発生装置 / 水蒸気発生装置 / 水 / 宇宙用機器 / 電気推進機 / アークジェットスラスタ / 推進剤 / ガス発生器 / アークジェット / 宇宙環境 / 宇宙機器 / 電気推進 / 宇宙ステーション / リフレッシュ |
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| Outline of Final Research Achievements |
About ten years ago, it was difficult to obtain water in space because there was no technology to recover purified water from domestic wasted water. However, WRS (Water Recovery System) was developed and astronauts staying at ISS (International Space Station) can get water easily with the system. Because WRS using distillation is large, a low-power and small-sized device to vaporize liquid water is needed. In this study, a gas generator to generate vapor was designed and developed. Furthermore, water recovered in ISS is presently left over. Therefore, application of water to electric propulsion was considered. When using water as a propellant, a water-cooled arcjet thruster system achieved stable operations during maximum 10 seconds. In order to realize long time operation, an arcjet thruster with radiation-cooled anode was developed. Using water and nitrogen mixture gas, the anode-radiation-cooled arcjet thruster system confirmed operations during about 7 minutes.
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