4.12.
COMPRESSOR ASSEMBLY
The compressor and impeller housings, figure 4.12, consist of
two matched halves constructed of cast magnesium and coated with HAE
like the inlet housing assembly. The compressor housings provide
alignment and support between the inlet housing forward and the
diffuser housing aft. The housings enclose the fivestage axial
compressor and the singlestage centrifugal compressor impeller. The
stator vanes are located in lands (areas) between the compressor
rotor disks when the housings are installed. The stators convert air
velocity, from the rotating compressor, into pressure. The stators
also direct airflow, at the proper angle, on to the following set of
rotating compressor blades. The fifth stator vane assembly includes
a row of exit guide vanes which direct airflow on to the centrifugal
compressor impeller.
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