Mobile Launcher (ML) is one of the critical ground supporting systems,which is going to be in service for Space Launch System (SLS). The function of ML includes stacking,assembly,process checkouts and launch support for the SLS rocket and Orion spacecraft. The structure layouts,operations and functions from Apollo and Saturn V are valued and baselined. The ground support equipment like umbilicals and accessories are researched and renewed. Besides,ML is aimed to be possessed of strong applicability and generality for different heavy-lift rockets,including SLS. The generality design is then performed,and modules and equipment are borrowed from previous launchers. Comprehensive tests of function,security and reliability are carried on. The research in the paper will provide reference for the launcher of heavy-lift rocket in China.
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