| 研究課題/領域番号 |
26820370
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| 研究機関 | 東京大学 |
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研究代表者 |
SCHOENHERR Tony 東京大学, 工学(系)研究科(研究院), 助教 (70625491)
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| 研究期間 (年度) |
2014-04-01 – 2016-03-31
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| キーワード | propellant feeding / gaseous propellant / air-breathing thruster |
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| 研究実績の概要 |
Following an analysis of the atmospheric conditions in low Earth orbits, we have estimated the mass flow rates of gaseous propellant that are to be expected to be used in an eventual thruster system. We've designed, built, and tested a propellant feeding system including an injector valve to allow for testing a pulsed plasma thruster with gaseous propellant--firstly with air only.
Injection and ignition were successful, but results showed but small difference to normal PPT operation. We've redesigned the PPT to allow for higher energy input, i.e., might reveal more difference between solid and gaseous propellant, and also to provide a more likely thruster for in-orbit operation.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
A slight delay occured due to procurement of components for the thruster (capacitors), which delayed the measurement of thrust properties. Eventual delivery date is set to end of May, and we're hopeful to be able to cope with the delay and come back to the original schedule as soon as possible.
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| 今後の研究の推進方策 |
After arrival of the thruster components and some adjustments to the thrust balance, we will measure the thrust properties of the new gas-fed PPT and from there evaluate the feasibility of an air-breathing PPT, and find points for further optimization of the system. If possible, we also intend to enable high-speed photography to compare the discharge processes with solid-propellant PPT.
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| 次年度使用額が生じた理由 |
Due to delay of procurement of thruster parts, some money was left over in FY2014, and had to be transferred to FY2015.
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| 次年度使用額の使用計画 |
The past-on money will be used for the delayed parts when they arrive soon.
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