著者

小出 貴宏 熊谷 直紀 佐藤 健輔 田村 宏司 河原 健太郎 播磨 賢司 福島 忠徳 橋本 英一 杉木 光輝 竹ヶ原 春貴

出版者

一般社団法人 日本機械学会

雑誌

スペース・エンジニアリング・コンファレンス講演論文集 2003.11 (ISSN:24243191)

巻号頁・発行日

pp.15-20, 2003-01-23 (Released:2017-06-19)

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Pulsed Plasma Thrusters (PPT) using Teflon as solid propellant has characteristics of simplicity, lightweight, and high durability in recent years. Therefore, PPT propulsion system has the advantages for the small, micro-and nano-satellite attitude control. Tokyo Metropolitan Institute of Technology (TMIT) has started R & D on PPT system with the collaboration of NASDA. This paper describes its present status of the R & D. In the BBM phase, we tested that hood angle and electrode material was changed. In this result, we have researched optimum performance of TMIT-PPT. Now we have shifted from BBM-phase to EM-phase.

著者

竹ヶ原 春貴 小境 正也 山極 芳樹 大西 健夫 田原 弘ー

出版者

一般社団法人 日本航空宇宙学会

雑誌

日本航空宇宙学会誌 (ISSN:00214663)

巻号頁・発行日

vol.52, no.602, pp.79-85, 2004-03-05 (Released:2019-04-17)

参考文献数

29

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

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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.