The Rocketdyne XLR-89-5, known as the LR-89-5 Engine in the game, is a liquid-fueled rocket engine used in the Atlas rocket. Two of them are attached to the detachable Engine Base to build the Atlas booster.
Trivia[]
- Although in real life the Atlas rocket had to detach the engine base during launch, in the game the Mercury-Atlas rocket can be launched as an SSTO, that is, it does not need to detach the engine base to reach orbit, unlike in real life.
- The sound it produces is similar to that of the Hawk Engine and Titan Engine.