H-IIA
Quick Summary
The H-IIA is a Japanese launch vehicle developed to reduce costs compared to its predecessor, the H-II. It utilizes a combination of foreign and Japanese components, along with simplified manufacturing, to achieve this goal. The H-IIA can be configured with solid rocket motors and liquid-fueled strap-on boosters. Its first launch occurred in August 2001. The H-IIB, a variant of the H-IIA, was specifically designed to launch the H-II Transfer Vehicle (HTV), an uncrewed spacecraft that delivers supplies to the International Space Station.12
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