2021 Fiscal Year Final Research Report
Design theory construction based on clarification of dominant conditions of electromagnetic plasma acceleration of advanced electrodeless, electromagnetic plasma acceleration
| Project/Area Number |
20K14452
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 14030:Applied plasma science-related
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| Research Institution | Kobe University (2021)
Tokyo University of Agriculture and Technology (2020) |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Keywords | 電気推進機 / 高周波プラズマ生成 / m = 0半周期加速法 / 回転磁場加速法 / 電流電源インバータ回路 / 静電・電磁プローブ法 / 発光分光計測 |
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| Outline of Final Research Achievements |
In the study of the m = 0 half-cycle plasma acceleation method, a high-current power supply was newly developed to investigate the dependece of the acceleration effect on strength and frequency of time-varying magnetic fields induced by the m = 0 coil. We confirmed the amplitude of the magnetic field incresed with incresing the applied current. Futhermore, a two-dimentinal numerical analysis revealed the spatial profiles of the azimuthal current driven in the present experimental setup.
A high plasma-dnesity increment was obtained by spatial probe measurement in the Rotating Magnetic Field (RMF) plasma acceleration method. Depending on the RMF operational condtions, diamangetic curent effect due to the high-dnesity profile exceeds the original current driveing effect suing the RMF method. We found the further thrust incremnt even in a partial penetration condtion of the RMF,since high ion-velocity profiles were also obtained in the dwonstream of the RMF acceleration antenna.
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| Free Research Field |
プラズマ理工学
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| Academic Significance and Societal Importance of the Research Achievements |
提案する2種類の電磁加速型無電極プラズマスラスタ実現は，将来型の宇宙開発ミッションで要求される推進機の長寿命化と高推力化の両立を可能にすると考える．本研究課題で作製した大電流電源回路は高推力化をはかるものであり，大電流化に伴うプラズマ加速への影響調査，および時空間的に変動する物理挙動の解明は，電気推進分野のみならず，他の学術分野においても新たな知見をもたらし，その産業応用へのきっかけになりうるとも考える．
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