Stennis Space Center Site Index
J-2 Engine Gallery


View of the "cat eyes," openings between the regenerative cooling tubes where the turbine exhaust gases are dumped. Dumping the turbine exhaust into the thrust chamber in this fashion enhanced the engine's specific impulse.

The engine also employs a "pass and a half" regenerative cooling scheme: The hydrogen fuel is introduced at the fuel inlet manifold, where an additional regenerative cooling tube, running only from the fuel inlet manifold to the engine's exit plane, is added to the full-length tubes.

Picture 3 of 3.

Time picture taken Tue Jun 14 11:21:10 2005
Location picture taken Rocket Park
Visitor Center
Stennis Space Center, MS
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