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65.8 Turbine Engine Compressors

65.8.2 Describe the purpose of a compressor in a turbine engine.

65.8.4 Describe the basic principles of operation of centrifugal and axial flow compressors.

65.8.6 Describe the comparative advantages of centrifugal and axial flow compressors.

65.8.8 Describe the merits of combined centrifugal and axial flow compressor combinations in turbine engines.

65.8.10 Describe the purpose and function of:

(a) impellers

(b) inlet guide vanes (fixed and variable)

(c) rotor blades

(d) stator blades

(e) variable stator blades

(f) diffusers

(g) bleed valves / bands

65.8.12 State the reasons why axial flow compressors have a higher number of stages than centrifugal compressors.

65.8.14 State the reason for the small pressure change per stage in an axial flow compressor.