1 0 0 0 OA ジルコニウム陰極を用いたアーク風洞による原子状酸素気流の生成
- 著者
- 松井 信 池本 智之 高柳 大樹 小紫 公也 荒川 義博
- 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.5, pp.27-31, 2006 (Released:2006-09-30)
- 参考文献数
- 21
An arc-heater using a zirconium cathode was developed as an atomic-oxygen generator. With pre-mixed argon-oxygen injection, stable discharge was maintained for more than three hours, and the cathode erosion rate was as low as 1.7x10-5 g/s. The plume temperature and velocity distributions were measured and chemical composition and total specific enthalpy was evaluated by laser absorption spectroscopy. As a result, in the center area of the plume, the degree of dissociation in oxygen was found almost 100% with the total specific enthalpy of 4.5±0.1 MJ/kg.
1 0 0 0 OA 火星衛星探査機(MMX)のサンプルリターンカプセル設計及び開発状況
1 0 0 0 OA 再突入飛行技術向上を目的とした衝撃波管の開発
- 著者
- 山田 剛治 鈴木 俊之 高柳 大樹 藤田 和央
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 日本航空宇宙学会論文集 (ISSN:13446460)
- 巻号頁・発行日
- vol.57, no.670, pp.426-436, 2009 (Released:2009-11-25)
- 参考文献数
- 22
- 被引用文献数
- 1 1
A free piston double diaphragm shock tube with 70 × 70mm cross-section at test section was newly developed for the purpose of investigating nonequilibrium phenomena behind a shock wave. This paper presents the performance of the shock tube and the measurement system newly developed. Experimental investigation to clarify its characteristics was conducted for various operational parameters, such a rupture pressure of the first diaphragm and initial pressures of the low pressure tube, the high pressure tube, and the compression tube. Based on the characteristics experiment, a performance map of the shock tube was obtained by changing the operation parameters. The result shows that the shock tube is capable of generating the shock layer corresponding to the super orbital reentry flight conditions. The newly developed measurement system enables us to obtain the spatial distribution of spectra behind a shock wave with high spatial and time resolution. A description of the measurement system and typical examples of the measured spectra are presented.