Decision looms on when to introduce new SLS upper stage, Spaceflight Now “Officials initially planned to power the upper stage with a J-2X engine, a modernized powerplant based on the […]
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Posted inSLS and Orion
NASA Has No Clear Use for the J-2X That It Once Needed
NASA’s J-2X Engine To Be Mothballed After Testing, Aviation Week “NASA’s J-2X engine, once considered the pacing item for the next U.S. human-rated rocket, will go on the shelf after […]