J-2X

The J-2X is a liquid-fueled cryogenic rocket engine that was planned for use on the Ares rockets of NASA's Constellation program, and later the Space Launch System. Built in the United States by Aerojet Rocketdyne (formerly, Pratt & Whitney Rocketdyne), the J-2X burns cryogenic liquid hydrogen and liquid oxygen propellants, with each engine producing 1,307 kN (294,000 lb_f) of thrust in vacuum at a specific impulse (I_sp) of 448 seconds (4.39 km/s). The engine's mass is approximately 2,470 kg (5,450 Lb), significantly heavier than its predecessors.

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2007  Wikimedia, Wikidata
cryogenic rocket engine, Aerojet Rocketdyne, Pratt & Whitney Rocketdyne, United States, 
United States, Ashkenaz, Calvinist Republic of Ghent, Chinland, Havilah, Kingdom of Martabam-hongsawatoi, Kingdom of Wolaita, Persia, Sikh Confederacy, Tarshish, cryogenic rocket engine, Dong Fang Hong 2, Ekran, 2007, Republic of Haiti, 

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Frameless

NASA's J-2X Engine

J-2X

Test of the J-2X Engine

Artist Concept of J-2X Rocket Engine2

Artist concept of the J-2X rocket engine

J2-X Engine NASA test - 592563main SSC-2011-01852 946-710

J-2X engine test (SSC-2011-02067)

J-2X engine test (SSC-2011-02372)

Engineers at NASA's Stennis Space Center conducted a test of the J-2X engine powerpack Feb. 15, 2012, the first in a series of key tests in development of the next-generation rocket.

J-2X engine No. 10001 is returned March 8, 2012, to the A-2 Test Stand at Stennis Space Center for its second round of tests. The developmental engine underwent an initial series of tests last year.

Type	Subtype	Date	Description	Notes	Source
commons	image		NASA's J-2X Engine		Commons
commons	image		J-2X		Commons
commons	image		Test of the J-2X Engine		Commons
commons	image		Artist Concept of J-2X Rocket Engine2		Commons
commons	image		Artist concept of the J-2X rocket engine		Commons
commons	image		J2-X Engine NASA test - 592563main SSC-2011-01852 946-710		Commons
commons	image		J-2X engine test (SSC-2011-02067)		Commons
commons	image		J-2X engine test (SSC-2011-02372)		Commons
commons	image		Engineers at NASA's Stennis Space Center conducted a test of the J-2X engine powerpack Feb. 15, 2012, the first in a series of key tests in development of the next-generation rocket.		Commons
commons	image		J-2X engine No. 10001 is returned March 8, 2012, to the A-2 Test Stand at Stennis Space Center for its second round of tests. The developmental engine underwent an initial series of tests last year.		Commons