小惑星探査機「はやぶさ」搭載マイクロ波放電式イオンエンジンの初期運用

DOI Web Site Web Site 被引用文献4件 参考文献16件

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タイトル別名
  • Initial Operation of Microwave Discharge Ion Engines Onboard "HAYABUSA" Asteroid Explorer
  • ショウワクセイ タンサキ ハヤブサ トウサイ マイクロハ ホウデンシキ イオンエンジン ノ ショキ ウンヨウ

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The microwave discharge ion engine generates plasmas of the main ion source as well as the neutralizer using 4GHz microwave without discharge electrodes and hollow cathodes, so that long life and durability against oxygen and air are expected. MUSES-C “HAYABUSA” spacecraft installing four microwave discharge ion engines was launched into deep space by M-V rocket on May 9, 2003. After vacuum exposure and several runs of baking for reduction of residual gas the ion engine system established the continuous acceleration of the spacecraft toward an asteroid. The Doppler shift measurement of the communication microwave revealed the performance of ion engines, which is 8mN thrust force for a single unit with 3,200sec specific impulse at 23mN/kW thrust power ratio. At the beginning of December 2003 the accumulated operational time exceeded 7,000 hours and units.

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