Last fired nearly a decade ago, the four Aerojet Rocketdyne RS-25 flight engines in the stage are going through some of their final pre-firing checkouts in the new SLS environment. After another ...

This consolidates Aerojet Rocketdyne’s RS-25 engine contracts, ensuring they continue to prepare the 16 RS-25 flight engines inherited from the Space Shuttle Program for the first four SLS ...

RS-25 program director at Aerojet Rocketdyne. "We tested the new RS-25 engines to the extreme limits of operation to ensure the engines can operate at a higher power level needed for SLS and ...

The acquisition, which was… Read More Aerojet Rocketdyne says it’s received a $67 million contract award from Lockheed Martin to provide propulsion systems for the Orion spacecraft that’ll ...