From the TOSC Times:
The largest, most powerful rocket ever built made a successful debut during a historical test firing conducted at the Orbital ATK Test Facility in Promontory, UT on March 11, 2015 and a skilled TOSC Team witnessed the newsworthy event.
The TOSC Team, which was comprised of the following engineers/technicians: Lon Coffin, Eric Duffin, Alex Jevitt, Josh Mercado, Jim Schick, Kenny Wright and Mike Wyckoff, supported the vital Integrated Product and Process Development (IPPD) review of ATK Booster Engineering for VAB Processing.
“It was exciting to be in Utah for this major program milestone, and actually feel the rumble of a rocket motor once again,” said Jim. “Knowing that each test paves the way towards getting hardware ready for KSC and the challenges assembly will bring makes it much more gratifying to actually see the transition as we progress toward a successful launch of EM-1.”
The booster produced about 3.6 million pounds of thrust during a full duration test firing which lasted two minutes – the same amount of time it will fire as it propels the Space Launch System (SLS) and Orion Multi-Purpose Crew Vehicle (MPCV) into deep space.
It was the first of two tests scheduled for flight qualification of the booster, which measures 177-feet long, the approximate height of a 17-story building.
The SLS will be powered by two boosters and four modified RS-25 engines, similar to those used during the Space Shuttle Program.
Exploration Mission-1 (EM-1), the first unmanned test flight of SLS, is scheduled for July 2018. The first manned mission of SLS, EM-2, is slated for August 2021.
– Times Staff