This is a high-fidelity model of an F-1 liquid fuel rocket engine, the highest thrust engine NASA has ever flown. Five F-1 engines, each producing a maximum thrust of 1.5 million pounds, powered the first stage (designated S1-C) of the colossal Saturn V launch vehicle that took American astronauts to the moon between 1969 and 1972.
Built by the Rocketdyne Division of North American Aviation, the F-1 burned RP-1, a refined form of kerosene, and liquid oxygen. The engine's 2,500-pound turbopump produced more than 20,000 horsepower and could pump 42,500 gallons of propellant per minute.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.