Rocket Engine, Liquid Fuel, XLR-87-AJ-1 for Titan 1 Missile

Shown here is a dual chamber, liquid-fuel engine assembly that powered the first stage of the two-stage Titan 1 intercontinental ballistic missile (ICBM). It consists of two identical engines that generated a combined total of 300,600 pounds of thrust. Each engine was fed by its own turbo-pump and gimbaled for directional control of the missile.

The Aerojet General Corporation designed and built the engine assembly. Development of the Titan I ICBM began in 1954 in response to the perceived "missile gap" between the United States and the Soviet Union. The Air Force also wanted it to serve as a back up to the Atlas ICBM currently under development. The first successful flight of the Titan I occurred on February 6, 1959 and service entry began four years later. The introduction of the more advanced Titan II prompted the Air Force to deactivate the earlier version in 1966.

The U.S. Air Force transferred this engine to the Museum in 1967.