Easa part 66 module 15.
Gas Turbine Engine (13 pages).
- Online Test Exam EASA PART 66 Module 15:
- 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, turboshaft, turboprop.
- 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.
- part 66 module 15
- Compressor inlet ducts;
- Effects of various inlet configurations;
- Ice protection.
- Axial and centrifugal types;
- Constructional features and operating principles and applications;
- Fan balancing;
- 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.
- Constructional features and principles of operation.
- Operation and characteristics of different turbine blade types;
- Blade to disk attachment;
- Nozzle guide vanes;
- Causes and effects of turbine blade stress andcreep.
- Constructional features and principles of operation;
- Convergent, divergent and variable area nozzles;
- Engine noise reduction;
- Thrust reversers.
Bearings and Seals
Constructional features and principles of operation.
Lubricants and Fuels
- Properties and specifications;
- Fuel additives;
- Safety precautions.
- System operation/lay-out and components.
- Operation of engine control and fuel meteringsystems including electronic engine control(FADEC);
- Systems lay-out and components.
- Operation of engine air distribution and anti-ice control systems, includinginternal cooling, sealing and external air services.
Starting and Ignition Systems
- Operation of engine start systems and components;
- Ignition systems and components;
- Maintenance safety requirements.
Engine Indication Systems
- Exhaust Gas Temperature/Interstage Turbine Temperature;
- Engine Thrust Indication: Engine Pressure Ratio, engine turbinedischarge pressure or jet pipe pressure systems;
- Oil pressure and temperature;
- Fuel pressure and flow;
- Engine speed;
- Vibration measurement and indication;
Power Augmentation Systems
- Operation and applications;
- Water injection, water methanol;
- Afterburner systems.
- Gas coupled/free turbine and gear coupled turbines;
- Reduction gears;
- Integrated engine and propeller controls;
- Overspeed safety devices.
- Arrangements, drive systems, reduction gearing, couplings, controlsystems.
Auxiliary Power Units (APUs)
- Purpose, operation, protective systems.
- Configuration of firewalls, cowlings, acoustic panels, engine mounts, antivibration mounts, hoses, pipes, feeders, connectors, wiring looms, controlcables and rods, lifting points and drains.
Fire Protection Systems
- Operation of detection and extinguishing systems.
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 dataspecified by engine manufacturer;
- Compressor washing/cleaning;
- Foreign Object Damage.
Engine Storage and Preservation
- Preservation and depreservation for the engine and accessories/systems.
- part 66 module 15
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