Antenna configuration effects on thrust performance of miniature microwave discharge ion engine

Naoji Yamamoto, Hirokazu Masui, Hiroshi Kataharada, Hideki Nakashima, Yoshiyuki Takao

研究成果: ジャーナルへの寄稿学術誌査読

17 被引用数 (Scopus)

抄録

The effects of antenna configuration on the thrust performance of a 30-W-class miniature microwave discharge ion engine were investigated. The ion beam currents were measured for three different antenna configurations such as disc, star, and cross antennas. The ion beam current of the star antenna was the largest among the three configurations and that of the disc antenna was the smallest. The effect of good coupling with plasma exceeded the effect of large losses on the antenna surface under low mass flow rate with low plasma density. The effect of large losses on the antenna surface also exceeded the effect of good coupling with plasma under high mass flow rate. The results showed that the optimum antenna shape depends on the desired mass flow level due to the tradeoff between microwave plasma coupling efficiency and surface-area recombination. It was also found that the disc antenna was the best at low mass flow rate and the star antenna was the best at high mass flow rate.

本文言語英語
ページ(範囲)925-928
ページ数4
ジャーナルJournal of Propulsion and Power
22
4
DOI
出版ステータス出版済み - 2006

!!!All Science Journal Classification (ASJC) codes

  • 航空宇宙工学
  • 燃料技術
  • 機械工学
  • 宇宙惑星科学

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