NASA lifted as new launcher clears design review hurdle

摘要

NASA's proposed Space Shuttle replacement - the Space Launch System (SLS) - has passed its preliminary design review stage, a crucial step for the new rocket. The review applies to the initial version of the launcher, duhbed Block 1A, which will use a Rocketdyne RL-10-powered Delta Cryogenic Upper Stage and solid rocket boosters adapted from the Space Shuttle. The 1A, which will be capable of lofting 70t into low Earth orbit (LEO) will make one fright in 2017 before it is replaced by the next iteration, the 1B.