著者

山田 仁 Hitoshi Yamada

雑誌

Ex : エクス : 言語文化論集

巻号頁・発行日

no.5, pp.85-107, 2007-03-31

著者

Kenjiro Kamijo Hitoshi Yamada Norio Sakazume Shogo WARASHINA

出版者

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

雑誌

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES (ISSN:05493811)

巻号頁・発行日

vol.44, no.145, pp.155-163, 2001 (Released:2005-07-09)

参考文献数

9

被引用文献数

9 14

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The first stage of the H-2 rocket used a 110-ton thrust liquid oxygen, liquid hydrogen, pump-fed engine, the LE-7. This engine required high-pressure and high-power liquid oxygen and liquid hydrogen turbopumps to achieve the two-stage combustion cycle in which the combustion pressure is around 13 MPa. Furthermore, it was very important to operate both turbopumps at higher rotational speeds to obtain a smaller, lighter-weight engine because the LE-7 had not low-speed, low-pressure pumps ahead of both the main pumps. The present paper shows the design, test results, and modifications that had been performed until a flight-type liquid oxygen turbopump for the LE-7 engine was completed. The liquid oxygen turbopump had been developed by the use of three models, that is, research, prototype, and flight models.

著者

山田 仁 Hitoshi Yamada

雑誌

Ex : エクス : 言語文化論集

巻号頁・発行日

no.4, pp.87-102, 2006-03-31