producer turbine. The hollow steel powershaft passes through and
rotates independently of the compressor rotor. Splines on the
forward end of the powershaft mate with the sun gearshaft that drives
the output reduction gears. Splines at the aft end of the powershaft
mate with the power turbine. The powershaft is supported at the
forward end, within the inlet housing, by a roller type bearing. The
aft end of the shaft is supported along with the power turbines (N2)
by the No. 3 and 4 main bearings.
4.13.
DIFFUSER HOUSING ASSEMBLY
The diffuser assembly housing shown in figure 4.14 is made of
steel and is located aft of the compressor section.
Figure 4.14. Diffuser Housing.
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