“太空发射系统(SLS)”是美国宇航局(NASA)正在研发的一种最新重型运载火箭,将用于发射新的太空飞船,把宇航员送往月球、火星或更远的深空。第一阶段研制的SLS有效载荷约为70000kg,比“土星”5号运载火箭的推力提高了将近10%,将在2017年执行首次发射任务,发射无人“猎户座”太空飞船进行绕月探测工作;第二阶段研制的SLS的有效载荷将达到130000kg,比“土星”5号运载 “Space Launch System (SLS) ” is the latest heavy-duty launch vehicle being developed by NASA and will be used to launch new spacecraft that will send astronauts to the moon, Mars or deeper space . The SLS payload developed in the first phase was about 70,000kg, an increase of nearly 10% over the thrust of the Saturn 5 launch vehicle, which will perform its first launch mission in 2017 and launch the unmanned Orion spacecraft Around the moon exploration work; the second phase of the SLS developed payload will reach 130000kg, than the “Saturn ” on the 5th carrier