SLS 1B, Cargo Rocket. 3D Illustration Poster. Royalty-Free Stock Image

The SLS will be designed to carry the Orion Multi-Purpose CrewVehicle, as well as important cargo, equipment and scienceexperiments to Earth's orbit and destinations beyond. Additionally, the SLS will serve as a back up for commercial and international partner transportation services to the International Space Station. The rocket concept is also called in-line SD-HLV (Shuttle derived - Heavy Lift Launch Vehicle) as it uses many parts of Shuttle heritage. It will consist of two 5-segmented solid rocket boosters (SRB)derived from the 4-segmented SRBs of the Shuttle.