§18322 Space Launch System as follow-on launch vehicle to the Space Shuttle

Summary

NASA must build a Space Launch System (SLS) to follow the Space Shuttle so the United States can reach cis‑lunar space and areas beyond low‑Earth orbit. As soon as practical after October 11, 2010, NASA must start development. To limit costs if projects end, it should extend or change existing rocket contracts, including ground testing of solid rocket motors, as much as possible. The SLS must at minimum: have core elements that can lift 70 to 100 tons to low‑Earth orbit without an upper stage; be able to carry an upper Earth‑departure stage so total lift is 130 tons or more; carry the multipurpose crew vehicle; and be able to back up ISS cargo or crew needs if commercial or partner vehicles cannot. The vehicle must be designed from the start to carry 130+ tons to low‑Earth orbit and to grow to lift heavier payloads. Work on core and upper stage should proceed together as money allows, with priority on core elements aiming for operation by December 31, 2016. NASA must keep and develop skills in solid and liquid engines, large fuel tanks, rocket propulsion, and ground testing, and design the SLS so it can evolve, add new technology, use competed sub‑elements, and support commercial use.