P A P E R - III Category C : TURBINE ENGINES AND VARIABLE PITCH PROPELLERS ____________________________________________________________ 1. Gas Turbine Engine Theory and Construction A general knowledge of the thermodynamics laws related to gas turbine engines. General knowledge of the Otto Cycle and Brayton's Cycle and the relationship between volume, temperature and pressure. A general knowledge of the terms used in the theory of gas turbine engines and calculations of parameters from the given data. Advantages and Disadvantages of various types of gas turbine engines. Knowledge of the function, construction, classification and material of the various parts and accessories of the engine including the induction, exhaust, cooling systems, thrust augmentation and engine mounting, antiicing of engine. Knowledge of the various factors effecting the engine per- formance. Knowledge of condition monitoring and performance monitoring of gas turbine engines. Detailed knowledge of the engine fire detection and protec- tion systems. 2. Engine Fuel and Oil System Knowledge of the principle of operation and constructional features of fuel control units. Knowledge of constructional features, function of the compo- nents of engine fuel control system/ metering system. Knowledge of types, characteristics of aviation fuel, common sources of contamination and methods to prevent such contam- ination. Method to check contamination with precautions. Knowledge of types, characteristics of lubricants used in gas turbine engine lubrication system. Identification of contaminants with inference drawn. Detailed knowledge of function of various components of lubrication system. 3. Ignition and Starting System Knowledge of principle of operation, constructional features and function of ignition system components. Types of igni- tion; flame propagation. Knowledge of constructional features and function of various types of engine starters. 4. Engine Instruments Knowledge of the principle of operation of the engine in- struments, and detailed knowledge of replacement and in-situ operational tests thereof. 5. Power Augmentation System Knowledge of principle of operation and function of various types of power augmentation devices. 6. Propeller A general understanding of the propeller terms. A general knowledge of the purpose and function of all parts of a constant speed, variable pitch and feathering propeller and their associated control system components. 7. Thrust Reversers Knowledge of constructional features and function of various types of thrust reversers and their related components. 8. Auxiliary Power Unit General knowledge of the purpose, constructional features of compressors, combustion chambers and turbine arrangement; speed and load control; limiting factors; fire protection and indication; detailed knowledge of its operational fea- tures. 9. Bleed Control System Terms related to bleeding of air from the engine; compressor surge; compressor line; compressor stall; Bleed loads and condition under which bleed is tapped. 10. Air Oil System Knowledge of the air oil system used on a typical gas tur- bine engine. 11. Engine Maintenance Knowledge of trouble shooting of minor defects and methods of their rectification; rigging of engine controls and field adjustments of fuel control unit; periodical inspections necessary to check the serviceability of the engine; special inspection schedules; duplicate inspection of engine con- trols. Detailed knowledge of engine starting; ground run-up; trim- ming; and checking of the performance of the engine and its components including systems. Knowledge of engine preservation and depreservation proce- dures.