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Detail of a turbine exhaust manifold "omega joint".

The turbine exhaust manifold incorporates 15 such joints (so called because their cross-section resembles the Greek letter Ω) to allow for thermal expansion.

Picture 3 of 4.

This photo is of the interior of an omega expansion joint, taken through the flow vanes on the aft end of the turbine exhaust manifold.

 
Omega joint on turbine exhaust manifold segment on F-1 Engine (Davidson Center) at U.S. Space and Rocket Center
Time picture taken Sun Jun 3 12:51:12 2012
Location picture taken Saturn V Hall
Davidson Center for Space Exploration
U.S. Space & Rocket Center
Huntsville, AL
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