ASTRONOMÍA: NASA's J-2X Engine

Hi My Friends: A VUELO DE UN QUINDE EL BLOG., An experimental program to improve the performance of the J-2 started in 1964 as the J-2X (not to be confused with a later variant by the same name). The main change to the original J-2 design was a change from the gas generator cycle to a tap-off cycle that supplied hot gas from a tap on the combustion chamber instead of a separate burner. In addition to removing parts from the engine, it also reduced the difficulty of starting up the engine and properly timing various combustors.NASA's J-2X Engine
This image is from a 2008 cold flow test campaign conducted at NASA's Marshall Space Flight Center for the J-2X engine program. NASA continues to test the J-2X engine and conducted a 40-second test of the rocket engine Sept. 28, the most recent in a series of tests of the next-generation engine selected as part of the Space Launch System architecture that will once again carry humans into deep space. It was a test at the 99 percent power level to gain a better understanding of start and shutdown systems as well as modifications that had been made from previous test firing results.

Image Credit: NASA

Guillermo Gonzalo Sánchez Achutegui
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