抄録
Two solid rocket boosters provide the primary first stage thrust for the H-ll rocket, each producing a thrust of 1570 KN (160 tonf) at sea level. At the present time, about four years prior to the first launch, most of the booster sub-systems are either undergoing qualification or have already been qualified. A first full duration static firing test was conducted successfully on this April 15, 1988. This paper describes the present status of the design and development of the H-II rocket solid Rocket booster.