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.