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Space Engineers: NASA Marks Halfway Point in RS-25 Certification Test Series
NASA completed the sixth of 12 scheduled RS-25 engine certification tests in a critical series for future flights of the agency’s SLS (Space Launch System) rocket as engineers conducted a full-duration hot fire Jan. 27 at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The current series builds on previous hot fire testing conducted at NASA Stennis to help certify production of new RS-25 engines by lead contractor Aerojet Rocketdyne, an L3 Harris Technologies company. The new engines will help power NASA’s SLS rocket on future Artemis missions to the Moon and beyond, beginning with Artemis V. Operators fired the RS-25 engine on the Fred Haise Test Stand for almost eight-and-a-half minutes (500 seconds) – the same amount of time needed to help launch SLS – and at power levels ranging between 80% to 113%. The current series is the second and final series to certify production of the engines, which include several upgraded components. NASA completed an initial 12-test certification series with the new components in June 2023. Four RS-25 engines fire simultaneously to help launch each SLS rocket, producing up to 2 million pounds of combined thrust.
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