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J-2X Engine Continues to Set Standards

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Published on May 29, 2012

Testing of the next-generation J-2X rocket engine continues to set standards. Last fall, the engine attained 100 percent power in just its fourth test and became the fastest U.S. rocket engine to achieve a full-flight duration test, hitting that 500-second mark in its eighth test. On, May 25, NASA recorded another first during a 40-second test of the engine on the A-2 Test Stand at John C. Stennis Space Center. For the first time, test conductors fired the J-2X in both the secondary and primary modes of operation, 20 seconds in each. Previous tests were run in one mode only; combining the two allowed operators to collect critical data on engine performance. (NASA/SSC)

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