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View of the "cat eyes," openings between the regenerative cooling tubes where the turbine exhaust gases are dumped. These gaps also allow the introduction of half-length regenerative cooling tubes, running from the fuel manifold to the engine's reverse-flow manifold.

See my J-2 thrust chamber page for additional information.

 
J-2 rocket engine turbine exhaust vent on Saturn V S-II (Second) Stage at U.S. Space and Rocket Center
Time picture taken Sat Jun 19 11:09:22 2004
Location picture taken Rocket Park
U.S. Space & Rocket Center
Huntsville, AL
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