The sign accompanying the J-2 engine.
NASA Saturn J-2 Engine
This engine powered the second and third stages of the Saturn V rocket. The J-2 burned liquid
oxygen and liquid hydrogen propellant and generated 1,001,000 Newtons (225,000
lbs) of thrust. Burn time was 395 sec. (about six and one-half minutes). Five
J-2 engines were used on the Saturn V second (S-II) stage. A single J-2
propelled the Saturn V third stage
and Apollo crew towards the moon at a speed of 40,100 km/hr (24,900 mph). One
J-2 was used the power the second stage of the Saturn IB, used for the launching
of Skylab crews in 1973-74 as well as American astronauts during the 1975
Apollo-Soyuz Test Project. The Space Shuttle Main Engine
(SSME) is an outgrowth of J-2 technology.
Contractors: Rocketdyne Div., North American Aviation