CAPE CANAVERAL, Fla.—A rocket made almost completely of 3D-printed parts came within a half-second of blasting off Saturday on its debut flight, but remained grounded after back-to-back launch aborts.
The engines ignited, but abruptly shut down, leaving Relativity Space’s rocket, named Terran, standing on its pad.
Launch controllers reset the countdown clocks and aimed for the last possible moment of the three-hour window at Cape Canaveral Space Force Station. But once again, on-board flight computers halted the countdown, this time with 45 seconds remaining.
Relativity Space blamed the afternoon’s first problem on automation software and the second on low fuel pressure….