Aerojet Rocketdyne, an L3Harris Technologies company, has completed modernizing the four flight-proven RS-25 engines that will help power NASA’s Space Launch System (SLS) rocket on the Artemis IV mission. Artemis IV will be the first flight of the enhanced Block 1B configuration of the super-heavy-lift rocket and the last to use engines remaining in inventory from the space shuttle program.

Aerojet Rocketdyne: RS-25 engines are ready for Artemis IV

Aerojet Rocketdyne has completed modernizing the four flight-proven RS-25 engines that will help power NASA’s Space Launch System (SLS) rocket on the Artemis IV mission.