著者

前村 孝志 原 英統 宇治野 功

出版者

一般社団法人 スマートプロセス学会 (旧高温学会)

雑誌

高温学会誌 (ISSN:03871096)

巻号頁・発行日

vol.36, no.3, pp.153-159, 2010-05-20 (Released:2011-05-24)

参考文献数

8

被引用文献数

1 1

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H-IIB Launch Vehicle Test Flight (H-IIB TF1) was successfully launched on September 11, 2009 from the Tanegashima Space Center, with carrying the H-II Transfer Vehicle (HTV) Demonstration which transports supplies to the International Space Station (ISS). The H-IIB is an upgraded version of current H-IIA to meet the requirement of HTV launch, and one of the major items to be new developed is the 5.2m-daiametr first-stage tank. The enlargement of propellant tank diameter causes higher load with internal pressure, the state-of-art welding manufacturing technologies, friction stir welding, is adopted in order to increase the high reliability of the tank structure. This paper describes the results of development process of H-IIB tank by applying the friction stir welding to the axial and circumferential directions with the self-reacting tool called “bobbin tool” which eliminates the use of conventional backing metals.