This was a test of a redesign of the SLS solid rocket booster to use a composite case (the current shuttle-derived SRBs used by SLS use a steel case). In a st

This was a test of a redesign of the SLS solid rocket booster to use a composite case (the current shuttle-derived SRBs used by SLS use a steel case). In a static test, the nozzle fell off about 100 seconds after ignition; if this occurred in flight it would likely abort the mission.