Skip to main content

Module 15

MODULE 15. GAS TURBINE ENGINE





15.1 Fundamentals
        Potential energy, kinetic energy, Newton's laws of motion, Brayton cycle;
        The relationship between force, work, power, energy, velocity, acceleration;
        Constructional arrangement and operation of turbojet, turbofan, turbo shaft, turboprop.

15.2 Engine Performance
        Gross thrust, net thrust, choked nozzle thrust, thrust distribution, resultant thrust,
        thrust horsepower, equivalent shaft horsepower, specific fuel consumption;
        Engine efficiencies;
        By-pass ratio and engine pressure ratio;
        Pressure, temperature and velocity of the gas flow;
       Engine ratings, static thrust, influence of speed, altitude and hot climate, flat rating,
       limitations.

15.3 Inlet
        Compressor inlet ducts
        Effects of various inlet configurations;
        Ice protection.

15.4 Compressors
         Axial and centrifugal types;
         Constructional features and operating principles and applications;
         Fan balancing;
         Operation:
         Causes and effects of compressor stall and surge;
         Methods of air flow control: bleed valves, variable inlet guide vanes, variable stator
         vanes, rotating stator blades;
        Compressor ratio.

15.5 Combustion Section
        Constructional features and principles of operation.

15.6 Turbine Section
        Operation and characteristics of different turbine blade types;
        Blade to disk attachment;
        Nozzle guide vanes;
       Causes and effects of turbine blade stress and creep.

15.7 Exhaust
        Constructional features and principles of operation;
        Convergent, divergent and variable area nozzles;
        Engine noise reduction;
        Thrust reversers.

15.8 Bearings and Seals
        Constructional features and principles of operation.

15.9 Lubricants and Fuels
        Properties and specifications;
        Fuel additives;
        Safety precautions.

15.10 Lubrication Systems
          System operation/lay-out and components.

15.11 Fuel Systems
          Operation of engine control and fuel metering systems
          including electronic engine control (FADEC);
          Systems lay-out and components.

15.12 Air Systems
          Operation of engine air distribution and anti-ice control systems, including internal
          cooling, sealing and external air services.

15.13 Starting and Ignition Systems
          Operation of engine start systems and components;
          Ignition systems and components;
          Maintenance safety requirements.

15.14 Engine Indication Systems
          Exhaust Gas Temperature/Interstage Turbine
          Temperature;
          Engine Thrust Indication: Engine Pressure Ratio, engine turbine discharge pressure or
          jet pipe pressure systems;
          Oil pressure and temperature;
          Fuel pressure and flow;
          Engine speed;
          Vibration measurement and indication;
          Torque;
          Power.

15.15 Power Augmentation Systems
         Operation and applications;
         Water injection, water methanol;
         Afterburner systems.

15.16 Turbo-prop Engines
          Gas coupled/free turbine and gear coupled turbines; 
          Reduction gears;
          Integrated engine and propeller controls;
          Overspeed safety devices.

15.17 Turbo-shaft engines
          Arrangements, drive systems, reduction gearing,
          couplings, control systems.

15.18 Auxiliary Power Units (APUs)
          Purpose, operation, protective systems.

15.19 Power plant Installation
          Configuration of firewalls, cowlings, acoustic panels, engine mounts, anti-vibration
          mounts, hoses, pipes, feeders, connectors, wiring looms, control cables and rods, lifting
          points and drains.

15.20 Fire Protection Systems
         Operation of detection and extinguishing systems.

15.21 Engine Monitoring and Ground Operation
          Procedures for starting and ground run-up;
          Interpretation of engine power output and parameters;
          Trend (including oil analysis, vibration and boroscope) monitoring;
          Inspection of engine and components to criteria, tolerances and data specified by engine
           manufacturer;
         Compressor washing/cleaning;
         Foreign Object Damage.

15.22 Engine Storage and Preservation
          Preservation and depreservation for the engine and accessories/ systems.

Comments

Popular posts from this blog

Module 16

MODULE 16. PISTON ENGINE : A reciprocating engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion.   16.1 Fundamentals         Mechanical, thermal and volumetric efficiencies; Operating principles — 2 stroke, 4 stroke,         Otto and Diesel;         Piston displacement and compression ratio;         Engine configuration and firing order. 16.2 Engine Performance         Power calculation and measurement;         Factors affecting engine power;         Mixtures/leaning, pre-ignition. 16.3 Engine Construction        Crank case, crank shaft, cam shafts, sumps;        Accessory gearbox;        Cylinder and piston assemblies;       Connecting rods, inlet ...

Module 3

MODULE 3. ELECTRICAL FUNDAMENTALS 3.1 Electron Theory      Structure and distribution of electrical charges within: atoms, molecules,      ions, compounds; Molecular structure of conductors, semiconductors and insulators. 3.2 Static Electricity and Conduction      Static electricity and distribution of electrostatic charges;      Electrostatic laws of attraction and repulsion;      Units of charge, Coulomb's Law;      Conduction of electricity in solids, liquids, gases and a vacuum. 3.3 Electrical Terminology      The following terms, their units and factors affecting them: potential      difference, electromotive force, voltage, current, resistance, conductance,      charge, conventional current flow, electron flow. 3.4 Generation of Electricity      Production of electricity by the following methods: light, heat, friction,  ...

Module 14

MODULE 14. PROPULSION 14.1 Turbine Engines         (a) Constructional arrangement and operation of turbojet, turbofan, turbo shaft and turbo               propeller engines;         (b) Electronic Engine control and fuel metering systems (FADEC). 14.2 Engine Indicating Systems         Exhaust gas temperature/Interstage turbine temperature systems;         Engine speed;         Engine Thrust Indication: Engine Pressure Ratio, engine turbine discharge pressure or           jet pipe pressure systems;        Oil pressure and temperature;        Fuel pressure, temperature and flow;        Manifold pressure;        Engine torque;        Propeller speed. 14.3 Starting and Ignition Systems        Op...