Space Launcher System

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Q7572405




The Space Launching System, or Space Launcher System, (SLS), was a 1960s-era design program of the US Air Force for a family of launch vehicles based around a set of common components. After a series of studies in the late 1950s, the Air Force had concluded that the maximum efficiency would be gained by using only liquid hydrogen fuel for upper stages, which demanded the use of boosters based on segmented solid fuel rockets. By combining one of three upper stages with three different diameters of solids built to any length needed, the SLS provided wide flexibility in launch capability.

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