NASA's J-2X Engine
Kicks Off 2012 With Powerpack Testing
By Bill Goldston
January 28, 2012 - A new series of tests on the engine
that will help carry humans to deep space will begin
next week at NASA’s Stennis Space Center in southern
Mississippi. The tests on the J-2X engine bring NASA one
step closer to the first human-rated liquid oxygen and
liquid hydrogen rocket engine to be developed in 40
Tests will focus on the powerpack for the J-2X. This highly efficient and versatile advanced rocket engine is being designed to power the upper stage of NASA's Space Launch System, a new heavy-lift launch vehicle capable of missions beyond low-Earth orbit.
The powerpack comprises components on the top portion of the engine, including the gas generator, oxygen and fuel turbopumps, and related ducts and valves that bring the propellants together to create combustion and generate thrust.
upper stage engine is vital to achieving the full launch
capability of the heavy-lift Space Launch System," said William
Gerstenmaier, NASA's associate administrator for the Human
Exploration and Operations Mission Directorate. "The testing
today will help insure that a key propulsion element is ready to
support exploration across the solar system."
dozen powerpack tests of varying lengths are slated now through
summer at Stennis’ A-1 Test Stand. By separating the engine
components -- the thrust chamber assembly, including the main
combustion chamber, main injector and nozzle -- engineers can
more easily push the various components to operate over a wide
range of conditions to ensure the parts’ integrity, demonstrate
the safety margin and better understand how the turbopumps
varying the pressures, temperatures and flow rates, the
powerpack test series will evaluate the full range of operating
conditions of the engine components," said Tom Byrd, J-2X engine
lead in the SLS Liquid Engines Office at NASA's Marshall Space
Flight Center in Huntsville, Ala. "This will enable us to verify
the components' design and validate our analytical models
against performance data, as well as ensure structural stability
and verify the combustion stability of the gas generator."
This is the second powerpack test series for J-2X. The powerpack 1A was tested in 2008 with J-2S engine turbomachinery originally developed for the Apollo Program. Engineers tested these heritage components to obtain data to help them modify the design of the turbomachinery to meet the higher performance requirements of the J-2X engine.
|blog comments powered by Disqus|
|©AvStop Online Magazine Contact Us Return To News|