The J-2X Engine

I thought this week I ought to describe to you the new engine which will be used for human travel in space.  The J-2X engine is a variation of the J-2T engine, which was a variation of the J-2S engine.  NASA began construction of the engine in 2007 at the Stennis Space Center.  Nine test of the heritage J-2 engine components were conducted in preparation for the design of the J-2X engine.  The J-2X was chosen for the Project Constellation manned lunar landing program.  Though the project was cancelled by the President, development of the J-2X has continued for its potential as the second stage engine for the heavy-lift Space Launch System.


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