The launch of the Terran-1 rocket was the company’s third attempt. The previous attempt on March 11 was canceled due to a series of system errors.
Despite the failure of the second stage, Relativity Space claims the mission was successful because its purpose as a prototype was to demonstrate that the 3D-printed rocket could operate as an orbital launch vehicle, completing all stages from takeoff to separation. The rocket is 85% 3D-printed parts, including engines made from a proprietary alloy. Later models will be 95% 3D printed.
Source: Ferra

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