2014年1月
Two-Dimensional Particle-In-Cell Simulation of Magnetic Sails
JOURNAL OF PROPULSION AND POWER
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- 巻
- 30
- 号
- 1
- 開始ページ
- 233
- 終了ページ
- 245
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2514/1.B34692
- 出版者・発行元
- AMER INST AERONAUTICS ASTRONAUTICS
A magnetic sail is spacecraft propulsion that produces an artificial magnetosphere to block solar wind particles and thus impart momentum to accelerate a spacecraft. In the present study, the authors conducted two-dimensional particle-in-cell simulations on small-scale magnetospheres to investigate thrust characteristics of a magnetic sail and its derivative, magnetoplasma sail, in which the magnetosphere is inflated by an additional plasma injection. As a result, the authors found that the electron Larmor motion and the charge separation become significant on such a small-scale magnetosphere and the thrust of the magnetic sail is affected by the cross-sectional size of the charge-separated magnetosphere. The authors also reveal that the plasma injection, on the condition that the kinetic energy of plasma is smaller than the local magnetic field energy (approximate to 10-3), can significantly inflate the magnetosphere by inducing diamagnetic current in the same direction as the onboard coil current. As a result, the magnetoplasma sail thrust is increased effectively by an additional plasma injection: the magnetoplasma sail thrust (15N/m) becomes up to 7.5 times larger than the original thrust of the magnetic sail (2.0N/m). In addition, they found that the thrust gain of the magnetoplasma sail, defined as magnetoplasma sail thrust/(magnetic sail thrust+plasma injection thrust) becomes up to 2.2.
- リンク情報
- ID情報
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- DOI : 10.2514/1.B34692
- ISSN : 0748-4658
- eISSN : 1533-3876
- Web of Science ID : WOS:000333604600026