Q967676

The J-2, commonly known as Rocketdyne J-2, was a liquid-fuel cryogenic rocket engine used on NASA's Saturn IB and Saturn V launch vehicles. Built in the United States by Rocketdyne, the J-2 burned cryogenic liquid hydrogen (LH₂) and liquid oxygen (LOX) propellants, with each engine producing 1,033.1 kN (232,250 lb_f) of thrust in vacuum. The engine's preliminary design dates back to recommendations of the 1959 Silverstein Committee. Rocketdyne won approval to develop the J-2 in June 1960 and the first flight, AS-201, occurred on 26 February 1966. The J-2 underwent several minor upgrades over its operational history to improve the engine's performance, with two major upgrade programs, the de Laval nozzle-type J-2S and aerospike-type J-2T, which were cancelled after the conclusion of the Apollo program.

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Wikimedia, Wikidata
J2, Rocketdyne J-2, Rocketdyne J2
diameter 2.07 metre, height 3.38 metre, maximum thrust 200000 pound-force, maximum thrust 230000 pound-force, maximum thrust 225000 pound-force, specific impulse by weight 419 second, specific impulse by weight 418 second, specific impulse by weight 421 second, mass 1578.5 kilogram, mass 1583.9 kilogram, 
cryogenic rocket engine, Rocketdyne, 
United States, Ashkenaz, Calvinist Republic of Ghent, Chinland, Democratic Republic of the Congo, Havilah, Kingdom of Martabam-hongsawatoi, Kingdom of Wolaita, Persia, Sikh Confederacy, Sweden, Tarshish, cryogenic rocket engine, Dong Fang Hong 2, Ekran, Republic of Haiti, 

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Location: KML, Cluster Map, Maps,

Frameless

J-2 engine production at Rocketdyne

Atlas 10F at Huntsville Alabama 1987 (cropped)

J-2 Engine (97-153-8)

J-2 rocket engine

A J-2 engine undergoes static firing. The J-2, developed under the direction of the Marshall Space Flight Center, was propelled by liquid hydrogen and liquid oxygen.

Workmen inspect a J-2 engine at Rocketdyne's Canoga Park, California production facility. The J-2, developed under the direction of the Marshall Space Flight Center, was propelled by liquid hydrogen and liquid oxygen.

Smokeless flame juts from the diffuser of a unique vacuum chamber in which the upper stage rocket engine, the hydrogen fueled J-2, was tested at a simulated space altitude in excess of 60,000 feet. The smoke you see is actually steam.

Rocketdyne's test stand for testing the J-2 engine in Santa Susana Mountains 6417049

J-2 engines for the Saturn IB/Saturn V launch vehicles are lined up in the assembly area at Rocketdyne's manufacturing plant in Canoga Park, California.

This image depicts an overall view of the vertical test stand for testing the J-2 engine at Rocketdyne's Propulsion Field Laboratory, in the Santa Susana Mountains, near Canoga Park, California.

Type	Subtype	Date	Description	Notes	Source
commons	image		J-2 engine production at Rocketdyne		Commons
commons	image		Atlas 10F at Huntsville Alabama 1987 (cropped)		Commons
commons	image		J-2 Engine (97-153-8)		Commons
commons	image		J-2 rocket engine		Commons
commons	image		A J-2 engine undergoes static firing. The J-2, developed under the direction of the Marshall Space Flight Center, was propelled by liquid hydrogen and liquid oxygen.		Commons
commons	image		Workmen inspect a J-2 engine at Rocketdyne's Canoga Park, California production facility. The J-2, developed under the direction of the Marshall Space Flight Center, was propelled by liquid hydrogen and liquid oxygen.		Commons
commons	image		Smokeless flame juts from the diffuser of a unique vacuum chamber in which the upper stage rocket engine, the hydrogen fueled J-2, was tested at a simulated space altitude in excess of 60,000 feet. The smoke you see is actually steam.		Commons
commons	image		Rocketdyne's test stand for testing the J-2 engine in Santa Susana Mountains 6417049		Commons
commons	image		J-2 engines for the Saturn IB/Saturn V launch vehicles are lined up in the assembly area at Rocketdyne's manufacturing plant in Canoga Park, California.		Commons
commons	image		This image depicts an overall view of the vertical test stand for testing the J-2 engine at Rocketdyne's Propulsion Field Laboratory, in the Santa Susana Mountains, near Canoga Park, California.		Commons