Module Title:Gas Turbine Engine
Language of Instruction:English
Credits: 5
NFQ Level:7
Module Delivered In 2 programme(s)
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 Assessment10.00%
Practical20.00%
End of Module Formal Examination70.00%
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
No Project
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

ITCarlow 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
 

Module Delivered In

Programme Code Programme Semester Delivery
CW_EEAER_B Bachelor of Engineering (Honours) in Aerospace Engineering 5 Group Elective 1
CW_EEACS_D Bachelor of Engineering in Aircraft Systems 5 Group Elective 3