Aircraft Turbine Engine Systems Syllabus Diploma in Aircraft Maintenance Engineering, Regulation 2010
OBJECTIVES
- To provide understanding of turbine engine systems.
- To familiarize different types of turbine engine fuel systems.
- To give an ideas and knowledge about controlling and protection of different types of turbine engine systems.
- To give an ideas and knowledge about lubricating system of the turbine engine.
- To give the guidelines and knowledge about cooling & sealing system of turbine engine.
- To provide understanding of thrust augmentation system of turbine engine.
- To provide understanding of thrust reversal system of turbine engine.
- To know ice protection system of turbine engine.
- To provide understanding of fire protection system of turbine engine.
- To familiarize of starting system of turbine engine.
- To provide understanding of ignition system of turbine engine.
SHORT DESCRIPTION
Introduction to engine fuel system, lubricating system, cooling & sealing, Bleed air system, thrust augmentation system, ice Protection system, thrust reversal system, engine indecating system, Ignition system, Starting system and engine performance.
DETAIL DESCRIPTION
Theory
- UNDERSTAND AIRCRAFT TURBINE FUELS
1.1 Introduction
1.2 Identify Gas turbine fuel
1.2.1 Outline Fuel general requirements
1.2.2 Mention Fuel specific requirements
1.2.2.1 Define Combustion efficiency
1.2.2.2 Define Volatility & Viscosity
1.2.2.3 Mention Flame blow-out & relighting
1.2.2.4 Identify Carbon deposition
1.2.3 Define Volatility
1.2.4 Define Viscosity
1.2.5 Define Pour point
1.2.6 Define Cloud point
1.2.7 Define Fire point
1.2.8 Define Flush point
1.2.9 Identify Different types fuel
1.2.10 Define Calorific value
1.2.11 Discuss Sulphur content
1.2.12 Discuss moister content
1.3 Explain Vapor locking and boiling
1.4 Identify the following Fuel contamination
1.4.1 Water
1.4.2 Foreign particles
1.4.3 Other grades
1.4.4 Microbial growth
1.4.5 Sediments
1.5 Carryout fuel Contamination detection test
1.6 Discuss Contamination control
1.7 Describe Fuel spray nozzles
1.8 Describe Fuel heating
1.9 Describe Effects of a change of fuel
- UNDERSTAND ENGINE FUEL CONTROL SYSTEM
2.1 Describe Turbine fuel controls
2.1.1 Hydromechanical
2.1.2 Hydromechanical/electronic
2.1.3 Full Authority Digital Engine/Electronic Control (FADEC).
2.2 Describe and identify Engine fuel system components
2.2.1 Main fuel pumps
2.2.2 Fuel heater
2.2.3 Fuel filters
2.2.4 Fuel spray nozzle & manifold
2.2.5 Fuel pressurizing & dump valve
2.2.6 Combustion drain valves
2.3 Describe Fuel control system
2.3.1 Pressure control (Turbo propeller engine)
2.3.2 Flow control
2.3.3 Combined speed & acceleration control
2.4 Carry out Fuel control adjustment
2.4.1 Specific gravity adjustment
2.4.2 Trimming adjustment
2.4.3 Engine pressure ratio (EPR)
2.4.4 Flat ratings
- UNDERSTAND LUBRICENTS AND LUBRICUTION SYSTEM
3.1 Define lubricants.
3.2 Principles of turbine engine lubrication.
3.3 Discus about the requirements of turbine engine lubricants.
3.4 Describe Engine oil-ratings.
3.4.1 Viscosity
3.4.2 Viscosity index
3.4.3 Gravity-API
3.4.4 Color
3.4.5 Pour point
3.4.6 Flash point
3.4.7 Carbon residue
3.5 Describe different Types of lubricant
3.5.1 Animal base lubricant
3.5.2 Vegetable base lubricant
3.5.3 Mineral base lubricant
3.5.4 Synthetic base lubricant
3.6 Describe different types Aviation grease
3.6.1 Compare to oil with grease
3.6.2. Factors considered in selecting grease
3.6.3. Requirements of grease
3.6.4 Types of grease
3.6.5 Additives
3.7 Carryout Lubrication system servicing
3.8 Find out Oil consumption
3.9 Describe Wet sump lubrication system
3.10 Describe Dry sump lubrication system
3.11 Describe System components
3.11.1 Describe Oil tank and differentiate Hot & Cold tank
3.11.2 Oil pumps
3.11.2.1 Gear type pump
3.11.2.2 Gee rotor type pump
3.11.2.3 Vane type pump
3.11.3 oil filter
3.11.4 Relief valve
3.11.5 Oil cooler
3.11.6 Oil jets
3.11.7 Centrifugal breather
3.11.8 Magnetic plug
3.12 Describe Full flow lubrication system
3.13 Describe Total loss (expandable) system
- UNDERSTAND ENGINE INTERNAL COOLING AND SEALING SYSTEM
4.1 Introduction.
4.2 Explain the different types of cooling
4.2.1 Turbine cooling
4.2.2 Bearing chamber cooling
4.2.3 Accessory cooling
4.3 Describe the following Sealing Mechanism
4.3.1 Labyrinth seals
4.3.2 Ring seals
4.3.3 Hydraulic seals
4.3.4 Carbon seals
4.3.5 Brush seals
4.3.6 Hot gas ingestion
4.4 Controls of bearing loads
4.5 Aircraft services
- UNDERSTAND THRUST AUGMENTATION SYSTEM
5.1 Explain the object of the thrust augmentation system.
5.2 Discus the different methods of thrust augmentation.
5.2.1 Water injection method
5.2.1.1 Compressor inlet injection
5.2.1.2 Combustion chamber injection
5.2.2 Reheat or after burning
5.2.3 Operation of after burning
5.2.4 Construction
5.2.4.1 Burners
5.2.4.2 Jet pipe
5.2.4.3 Propelling nozzle
5.2.5 Methods of after burning ignition
5.2.5.1 Catalytic ignition
5.2.5.2 Spark ignition
5.2.5.3 Hot shot ignition
5.2.6 Control system
- UNDERSTAND THRUST REVERSAL SYSTEM
6.1 Define the thrust reverser system.
6.2 Describe the principle of operation of the thrust reverser system.
6.3 Explain different types of thrust reverser system.
6.3.1 Clamshell door type.
6.3.2 Bucket target type
6.3.3 Cold stream reverser system
6.3.4 Turbo propeller reverse pitch system
6.4 Construction and materials
- UNDERSTAND ICE PROTECTION SYSTEM
7.1 Define the Ice protection system.
7.2 Areas to be ice protected
7.3 Discus the different types of ice protection system.
7.3.1 Hot air system
7.3.2 Electrical system
- UNDERSTAND FIRE PROTECTION SYSTEM
8.1 Define the fire protection system.
8.2 Describe Fire zones
8.3 Types of fire detection system.
8.3.1 Thermal switch fire detection system
8.3.2 Thermo couple type fire detection system
8.3.3 Continuous loop type fire detection system
8.3.4 Pressure type sensor responder fire detection system
8.4 Types of fire
8.5 Describe the following Fire-extinguishing agents
8.5.1 Water
8.5.2 Dry powder
8.5.3 Inert gas
8.5.4 Carbondioxide
8.5.5 Liquid nitrogen
8.6 Complete fire protection system
- UNDERSTAND IGNITION SYSTEM
9.1 Introduction and function of the ignition system.
9.2 Special handling requirements
9.3 Joule ratings
9.4 Types of ignition system
9.4.1 Low voltage DC input system
9.4.2 High voltage AC input system
9.5 Comparison of AC & DC system
9.6 Comparison of High voltage & Low voltage system
9.7 Igniter plugs
9.7.1 Types of igniter plugs
9.7.2 Cleaning of igniter plugs
9.7.3 Inspection of igniter plugs
- UNDERSTAND STARTING SYSTEM
10.1 Define starting system.
10.2 Explain different methods of engine starting system.
10.2.1 Direct cranking starter
10.2.2 Starter generator starter
10.2.3 Cartridge type starter
10.2.3 Air turbine starter
10.2.4 Gas turbine starter
10.2.5 Hydraulic starter
10.2.6 Fuel air combustion starter
10.2.7 Air impingement starter
10.3 Discus about the precaution of the engine starting system.
Practical
- Identifying the different components of fuel control.
- Familiar with removal, cleaning, inspection & installation of different components of fuel system.
- Familiar with removal cleaning, inspection & installation of different components of oil system.
- Familiar with servicing, replenishment and draining of oil.
- Identifying the different components of cooling system.
- Familiar with different methods of thrust augmentation & reversal system.
- Identifying the different components of ice protection & fire protection.
- Identifying the different components of ignition & starting system.
REFERENCE BOOKS
- Aviation Maintenance Technician Handbook Powerplant, Volume-I by FAA Publication
- Aviation Maintenance Technician Handbook Powerplant, Volume-II by FAA Publication
- Aircraft Gas Turbine Engine Technology by Tata Mc Graw-Hill.
- A & P Technical Power Plant Text Book by Jeppesen
- The RR Jet Engine by Rolls Royce.
Anwar Hossain Khan
DCI (Aerospace)
Engr. S.M. Akmal Hossain Principal |
