SpaceX's Falcon 9 rocket is powered by the innovative Merlin engine designed and manufactured in-house the engine has undergone multiple iterations, and is emblematic of SpaceX's dedication to reducing the cost of access to space. These engines have powered numerous successful SpaceX missions, including crewed missions to the International Space Station (ISS) and satellite deployments, contributing to the company's reputation for innovative, reusable rocket technology in the mission to revolutionize space transportation and expand human access to space.
The Merlin engine operates on rocket-grade kerosene (RP-1) and liquid oxygen (LOX) propellants, known as a RP-1/LOX engine. It is regeneratively cooled, where the engine heats the propellant to prevent combustion chamber overheating. The engine also features a simple design, with a single shaft, a turbo-pump, and a pintle-type injector, making it highly reliable and cost-effective.
