All the equipment for the care and feeding of uprated Space Shuttle Main Engines (SSME), adapted for SLS by Aerojet Rocketdyne as the RS-25, is repackaged from the backend of Space Shuttle ...

“Retrofit 1b” starts in August Aerojet Rocketdyne was awarded a contract by NASA in late 2015 to restart production of the RS-25, formerly known as the Space Shuttle Main Engine (SSME ...

One effect of the short was a loss of power to the Space Shuttle Main Engine (SSME) controllers. According to Hale: "The A computer on the Center SSME lost power, never to be recovered.