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At center of this photo is the turbine manifold. Hot gas from the gas generator enters this manifold, where it spins the turbine. The turbine's shaft is connected to a gear box which, in turn, powers the turbopumps.

After flowing through the turbine, the turbine exhaust gases enter the turbine exhaust hood (silver, at right) on their way to the heat exchanger.

Picture 2 of 2.