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View of the fuel return manifold.

Fuel flowed down the half-length tubes, providing regenerative cooling to the thrust chamber wall, to the fuel return manifold, where it flowed back up the full-length tubes to the fuel manifold and then on to the injector.

 
J-2 Engine at Science Museum Oklahoma (formerly the Omniplex)
Time picture taken Wed Jul 30 15:45:54 2008
Location picture taken Open-Air Exhibit Gallery
Science Museum Oklahoma (formerly the Omniplex)
Oklahoma City, OK
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