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作为积木式推进系统中心部件的标准推进组件一直在研制中,以它为基础可以研制出多种多样(有效载荷尺寸和重量不同,轨道高度不同)性能最佳的一级半和两级半运载火箭结构方案。采用这种标准推进组件方案将大大地缩短新的运载火箭的研制时间,并大大地降低研制成本。这种标准推进组件能配置七台航天飞机轨道器用的主发动机和直径为331英寸(8.407米)的外贮箱。本文讨论了采用这种积木式结构的三种运载火箭结构方案。它们具有以航天飞机系统固体火箭助推的各种运载火箭的运载能力,对于300海里(555.9公里)园轨道,运载能力为200000磅(90.6吨)～500000磅(226.5吨)。通过这三种结构方案具体地说明了这种标准推进组件如何以发动机结构对称和不对称配置方式被应用于驮式、串联式、以及驮-串联组合式的运载火箭结构方案中。这种标准推进组件方案还可以用于其它直径和以烃类为燃料的液体助推火箭,甚至可以用于未来的可回收的助推火箭。
As a standard propulsion unit for the center block of a block-type propulsion system, which is being developed, a wide range of one and a half and two-stage half-carriers with different payload sizes and weights and different orbital heights can be developed Rocket structure program. Adopting this standard propulsion component solution will greatly shorten the development time of the new launch vehicle and greatly reduce the development cost. This standard propulsion module can be equipped with a main engine for seven spacecraft orbiters and an outer tank of 331 inches (8.407 meters) in diameter. This article discusses three types of launch vehicle structures that use this modular structure. They have the carrying capacity of a variety of launch vehicles powered by the space shuttle solid rocket and have a carrying capacity of 200,000 pounds (90.6 tons) to 500,000 pounds (226.5 tons) for 300-nm (555.9 km) orbits. Through these three kinds of structural schemes, it shows how the standard propulsion assembly can be applied to the structure of the launcher, tandem and pack-tandem combined launch vehicle with symmetrical and asymmetrical engine structure. This standard propulsion component solution can also be used for other diameter and hydrocarbon-based liquid booster rockets and can even be used for future returnable booster rockets.