8 0 0 0 OA イプシロンロケット初号機小型液体推進系の運用結果
- 著者
- 宇井 恭一 志田 真樹 香河 英史 長尾 徹 古川 克己 三島 弘行 Ui Kyoichi Shida Maki Kagawa Hideshi Nagao Toru Furukawa Katsumi Mishima Hiroyuki
- 出版者
- 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)
- 雑誌
- 平成25年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2013
- 巻号頁・発行日
- 2014
平成25年度宇宙輸送シンポジウム(2014年1月16日-17日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県
1 0 0 0 OA ヒドラジン分解反応促進に対する放電プラズマの適用検討
- 著者
- 青柳 潤一郎 各務 聡 竹ヶ原 春貴 橘 武史 三島 弘行 齋藤 憲吉 長島 隆一 栗木 恭一
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 宇宙技術 (ISSN:13473832)
- 巻号頁・発行日
- vol.4, pp.1-6, 2005 (Released:2005-03-01)
- 参考文献数
- 11
Conventional monopropellant thrusters for spacecraft utilize the pelletized catalyst bed to decompose the propellant, typically Hydrazine. The catalyst bed consists of Iridium catalyst supported by porous Alumina ceramics pellets. During the long-term operation of the thruster, however, the catalyst is occasionally damaged, which causes several critical problems like a deterioration of the decomposition performance or choke of the capillary tube. In order to solve or mitigate these problems, a new decomposition device was designed and its preliminary model was fabricated and evaluated in our research group. Preliminary tests were conducted to examine the new reaction mechanism using pulsed or stationary AC discharge plasma instead of pelletized catalysts in a bucket type reaction chamber. In the reaction chamber filled with Hydrazine, sudden increase of the temperature and the pressure was observed immediately after the production of plasma discharge. These results show that the plasma is capable of the decomposition of Hydrazine, and acts as catalysts, and that it is worthwhile developing a new monopropellant thruster system using plasma assisted reaction in order to eliminate the disadvantages associated with the pelletized catalyst bed.