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Basic Gas Turbine Rating » Basic Turbine Knowledge » Turbine Engine Compressors

64.8 Turbine Engine Compressors

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

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

64.8.6 Describe the compressor arrangements found on the various types of turbine engine. 

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

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

64.8.12 Describe typical compressor pressure ratios for the various types and configuration of turbine engine 

64.8.13 Describe the factors that affect compression ratio. 

64.8.14 Define bypass ratio. 

64.8.16 Describe the design of, and bypass ratios associated with, various bypass fans, from low bypass to ultra-high bypass. 

64.8.18 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 

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

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