The most powerful version of Space Exploration Technologies (SpaceX) Merlin rocket engine yet developed has completed its first full-duration mission firing test at the company’s McGregor, Texas, development site. The Merlin 1D engine fired for 185 sec. and generated 147,000 lb. of thrust during the full mission duration firing, which included multiple restarts at target thrust and specific impulse. The engine is destined to make its first flight on the sixth mission of a Falcon 9 in ...


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