P A P E R - III Category C : PISTON ENGINES AND PROPELLERS (Unsupercharged and Supercharged) __________________________________________________________ 1. Piston Engine Theory and Construction A general knowledge of thermodynamic laws related to inter- nal combustion engines. Knowledge of heat engines. General knowledge of the Otto cycle and the relationship between volume, temperature and pressure. A general knowledge of the terms used in the theory of piston engines and calculations of parameters from the given data. Knowledge of various efficiencies involved in internal combustion engines. Differences between two stroke and four stroke engines. Knowledge of the function, construction, classification and material of the various parts and accessories of the engine including the induction, exhaust, cooling systems and engine mounting. A general understanding of the propeller terms. A general knowledge of the purpose and functioning of all parts of a constant speed, variable pitch and feathering propeller and their associated control system components. Knowledge of the various factors effecting the engine per- formance. Knowledge of the engine fire detection and protection sys- tems. 2. Engine Fuel and Oil System Knowledge of the principle of operation and constructional features of carburetors. Knowledge of the constructional features and function of components of engine fuel system. Knowledge of types, characteristics of aviation fuel, common sources of contamination and methods to prevent such contam- ination. Method of checking for contamination. Knowledge of types, characteristics of lubricants used in piston engine oil system. Contamination of oil and its identification. Knowledge of various components of oil system. 3. Ignition and Starting System Knowledge of principle of operation, constructional features and function of magnetos and ignition system components. Magneto timing procedure. Knowledge of principle of operation, 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. Supercharged System Knowledge of principle of operation, constructional features and function of various types of superchargers and its related components/ parts. 6. Engine Maintenance Knowledge of trouble shooting of minor defects and methods of their rectification; rigging of engine controls; periodi- cal inspections necessary to check the serviceability of the engine; inspection after propeller strike. Detailed knowledge of engine starting; ground run-up; ad- justments and checking of the performance of the engine and its components including systems; Top overhaul procedure and engine on-condition maintenance. Knowledge of NDT techniques as applicable to engine parts. Knowledge of engine preservation and depreservation proce- dures.