SLS Update: Preparing the SRBs for Exploration Mission-1...

Orbital ATK

Booster Hardware Readied for First Flight of NASA’s Space Launch System (Press Release)

Technicians at Orbital ATK in Promontory, Utah, offload the aft stiffener that will be used on one of the two, five-segment solid rocket boosters for the first flight of NASA’s new rocket, the Space Launch System (SLS). The boosters operate in parallel with the rocket’s main engines for the first two minutes of flight to provide the thrust needed for the launch vehicle to escape the gravitational pull of Earth. The aft stiffener is a component of the aft segment of the booster, which is located at the bottom of the booster during flight. The flight hardware is being processed at Orbital ATK’s facility. Later, the motor segments will be transported by rail to NASA's Kennedy Space Center in Florida, where they will join the forward and aft skirt assemblies. Once the boosters are assembled and checked out, they will be mated with the SLS core stage in the Vehicle Assembly Building at Kennedy.

Source: NASA.Gov

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NASA