Module Title: | Gas Turbine Engine |
Language of Instruction: | English |
Module Delivered In |
No Programmes
|
Teaching & Learning Strategies: |
This module will be taught by Lectures, Tutorials & Practical/Trouble-shooting tasks and by using aircraft gas turbine engines, components and manuals. |
Module Aim: |
The student will understand the working principles of gas turbine engines and engine control/cockpit indication systems as found on modern commercial aircraft used throughout the aircraft industry. |
Learning Outcomes |
On successful completion of this module the learner should be able to: |
LO1 |
Explain the theoretical fundamentals of the gas turbine engine |
LO2 |
Describe the principles of operation of a gas turbine’s ancillary systems |
LO3 |
Perform thermodynamic calculations relating to a gas turbine |
LO4 |
Describe the relationship between a gas turbine and an aircraft’s on-board systems |
Pre-requisite learning |
Module Recommendations
This is prior learning (or a practical skill) that is recommended before enrolment in this module.
|
No recommendations listed |
Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. |
No incompatible modules listed |
Co-requisite Modules
|
No Co-requisite modules listed |
Requirements
This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. |
No requirements listed |
Module Content & Assessment
Indicative Content |
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, turboshaft, turboprop.
|
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.
|
Inlet
Compressor inlet ducts Effects of various inlet configurations; Ice protection.
|
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.
|
Combustion Section
Constructional features and principles of operation.
|
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
|
Exhaust
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.
|
Lubrication Systems
System operation/lay-out and components
|
Fuel Systems
Operation of engine control and fuel metering systems including electronic engine control (FADEC); Systems lay-out and components.
|
Air Systems
Operation of engine air distribution and anti-ice control systems, including internal 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 turbine discharge pressure or jet pipe pressure systems; Oil pressure and temperature; Fuel pressure and flow; Engine speed; Vibration measurement and indication; Torque; Power.
|
Power Augmentation Systems
Operation and applications; Water injection, water methanol; Afterburner systems
|
Turbo-prop Engines
Gas coupled/free turbine and gear coupled turbines; Reduction gears; Integrated engine and propeller controls; Overspeed safety devices.
|
Turbo-shaft engines
Arrangements, drive systems, reduction gearing, couplings, control systems.
|
Auxiliary Power Units (APUs)
Purpose, operation, protective systems
|
Powerplant 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.
|
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 data specified by engine manufacturer; Compressor washing/cleaning; Foreign Object Damage.
|
Engine Storage and Preservation
Preservation and depreservation for the engine and accessories/systems.
|
Assessment Breakdown | % |
Continuous Assessment | 10.00% |
Practical | 20.00% |
End of Module Formal Examination | 70.00% |
Continuous Assessment |
Assessment Type |
Assessment Description |
Outcome addressed |
% of total |
Assessment Date |
Multiple Choice Questions |
Each student will take short answer question exams, administered during term time for which a maximum of 10% will be awarded |
1,2 |
5.00 |
Week 4 |
Multiple Choice Questions |
Each student will take short answer question exams, administered during term time for which a maximum of 10% will be awarded |
2,4 |
5.00 |
Week 10 |
Practical |
Assessment Type |
Assessment Description |
Outcome addressed |
% of total |
Assessment Date |
Practical/Skills Evaluation |
Each student will complete practical tasks during the module with a brief task report, administered during term time for which a maximum of 20% will be awarded. |
3 |
20.00 |
Every Week |
End of Module Formal Examination |
Assessment Type |
Assessment Description |
Outcome addressed |
% of total |
Assessment Date |
Formal Exam |
Each student will sit a formal written examination a the end of the module for which a maximum of 70% will be awarded. |
1,2,3,4 |
70.00 |
End-of-Semester |
SETU Carlow Campus reserves the right to alter the nature and timings of assessment
Module Workload
Workload: Full Time |
Workload Type |
Frequency |
Average Weekly Learner Workload |
Lecture |
Every Week |
2.00 |
Independent Learning |
Every Week |
2.00 |
Practicals |
Every Week |
0.50 |
Total Hours |
4.50 |
|