The University of Tokyo
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA)
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構研究開発報告: イオン加速グリッド耐久認定用数値解析 JIEDI (JAXA Ion Engine Development Initiatives) ツールの研究開発ワークショップ論文集
雑誌名(英)
JAXA Research and Development Report
巻
JAXA-RR-09-004
発行年
2010-02-26
会議概要（会議名, 開催地, 会期, 主催者等）（英）
Workshop on research and development of JIEDI (JAXA Ion Engine Development Initiatives) tool for numerical evaluation of ion engine grid lifetime
抄録（英）
The erosion of accelerator grid aperture due to impingement of charge-exchange ions limits the normal operation of the microwave discharge ion engine, in which long life and high reliability are inherent because of electrode-less plasma generations. A commercially available image scanner and image-analysis software enabled to statistically analze the diameters of the huge number of apertures in the flat C/C grids. This measurement method was applied to the accelerator grids of mu10 ion engine after the 20,000 hour endurance test and mu20 ion engine under ion machining in 30 hours. As a result, it was revealed that the erosion distribution of the mu10 grid had the azimuthal dependence. Moreover, we obtained the design guide for the next mu20 accelerator grid, to make the apertures with tapered shape on the side of upstream.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
イメージスキャナを用いた平板Ｃ／Ｃグリッド孔径の統計的分析
64642007.pdf
(1.64MB)
