The SpaceX Raptor is a highly reusable full-flow staged combustion, methane-fueled rocket engine manufactured by SpaceX. Raptor will be used in both stages of the two-stage-to-orbit, super-heavy-lift Starship system launch vehicle, which is designed to replace all existing SpaceX vehicles, including the Falcon 9 and Falcon Heavy launch vehicles and the SpaceX Dragon 2.


The SpaceX Merlin is a family of rocket engines developed by SpaceX for use on its Falcon 1, Falcon 9 and Falcon Heavy launch vehicles. Merlin engines use RP-1 and liquid oxygen as rocket propellants in a gas-generator power cycle. The Merlin engine was originally designed for sea recovery and reuse.