Following the highly successful test firing of the Qualification Motor 2 (QM-2) at their proving grounds near Promontory, Utah, Orbital ATK is preparing for the second half of casting operations for the Solid Rocket Booster segments that will power the SLS EM-1 mission through the first two minutes of flight – while at the same time working through a minor issue that is not expected to affect SLS SRB production timelines.
