Turbine Engines

Course Description

AMT1313C — Turbine Engines is a college-credit, integrated lecture-and-laboratory course in Florida's Aviation Maintenance Management, Aviation Maintenance Technology, and related college-credit programs. The course covers the theory, construction, operation, inspection, and maintenance of gas turbine engines used in commercial, business, and military aviation: turbojet, turbofan, turboprop, and turboshaft engines. Distinct from the FAA Part 147 PSAV powerplant courses (AMT 08xx series, which are part of the certificating mechanic curriculum), AMT1313C provides college-credit study suitable for aviation-management students, advanced avionics technicians, or those seeking deeper turbine systems knowledge beyond entry-level mechanic certification.

This course is offered at Broward College, Eastern Florida State College, Polk State College, and other Florida college-credit aviation programs. Florida's substantial business-aviation and airline-maintenance markets drive strong demand for technicians and supervisors with strong turbine-engine fundamentals.

Learning Outcomes

Required Outcomes

Upon successful completion of AMT1313C, students will be able to:

• Explain turbine-engine thermodynamic principles: Brayton cycle; pressure-volume and temperature-entropy diagrams; isentropic flow approximations.
• Identify and describe turbine-engine sections: inlet, compressor, combustion chamber, turbine, exhaust; accessory drive section.
• Compare turbine-engine types: turbojet, turbofan (low-bypass and high-bypass), turboprop, turboshaft; performance characteristics and applications.
• Describe the operation of compressor systems: axial-flow, centrifugal, hybrid configurations; multi-stage and dual-spool/triple-spool architectures.
• Describe the operation of combustion chambers: annular, can, and can-annular configurations; fuel injection (duplex nozzle, vaporizing, simplex, air-blast); ignition sequence.
• Describe the operation of turbine sections: high-pressure (HP) and low-pressure (LP) turbines; turbine cooling (impingement, film, transpiration); turbine materials.
• Apply turbine performance parameters: N1, N2, N3 (speed); EGT, ITT, TIT (temperature); fuel flow; pressure ratios; performance setting.
• Describe and apply turbine inspection methods: borescope inspection (BSI); hot-section inspection (HSI); shop visit and module replacement; condition trend monitoring.
• Describe fuel-control systems: hydromechanical fuel control; electronic engine control (EEC); Full Authority Digital Engine Control (FADEC).
• Describe turbine ignition and starting systems: capacitor-discharge ignition; pneumatic, electric, and APU starting.
• Apply turbine engine safety: inlet/exhaust danger zones; foreign object damage (FOD) awareness; hot-section thermal hazards; high-energy ignition.

Optional Outcomes

• Apply introductory FADEC system diagnostic awareness on representative engines (PT6, JT8D, CFM56, CF34).
• Apply introductory vibration analysis for turbine engines.

Major Topics

Required Topics

• Thermodynamics of Gas Turbine Engines: Ideal Brayton cycle; real-cycle deviations; thrust equation; thermodynamic efficiency; propulsive efficiency.
• Engine Sections: Inlet (subsonic and supersonic); compressor (axial, centrifugal, hybrid); combustor (annular, can, can-annular); turbine (HP, LP); exhaust (nozzle, mixer, thrust reverser).
• Engine Types and Applications: Turbojet (military, missile); low-bypass turbofan (military fighter); high-bypass turbofan (commercial transport, business jet); turboprop (regional, GA); turboshaft (helicopter, APU).
• Compressor Operation: Compression stages; surge and stall; bleed-air systems; variable inlet guide vanes (VIGV); variable stator vanes (VSV).
• Combustion Systems: Combustor types; fuel injection methods; ignition; combustion efficiency; emissions (NOx, CO, soot).
• Turbine Section: Turbine stages; rotor and stator design; blade cooling techniques; high-temperature alloys (Inconel, single-crystal nickel superalloys).
• Performance Parameters: Speed (N1, N2, N3); temperature (EGT, ITT, TIT, TGT); fuel flow; engine pressure ratio (EPR); throttle/power lever settings (TO, MCT, CLB, CRZ, IDLE).
• Engine Inspection and Maintenance: Borescope inspection; hot-section inspection; module replacement; engine condition trend monitoring (ECTM); reliability and time-between-overhauls (TBO).
• Fuel Control Systems: Hydromechanical fuel control unit (FCU); electronic engine control (EEC); FADEC architecture; alpha-channel and beta-channel; fuel scheduling.
• Ignition and Starting: Capacitor-discharge ignition; high-energy igniter plugs; starter types (pneumatic, electric, hydraulic); APU starting; cross-bleed starts.
• Engine Safety: Inlet hazards (intake suction); exhaust hazards (jet blast, hot gases); FOD prevention; high-energy ignition shock hazard; ground-run discipline.

Resources & Tools

• Mike Tooley Aircraft Engineering Principles; Walter Treager Aircraft Gas Turbine Engine Technology; James Brady Gas Turbine Engine Fundamentals
• Engine maintenance manuals for representative training engines (PT6A, JT8D, CFM56, CF34, CT7, V2500, GE90 simulator coverage)
• FAA AC 43.13-1B; engine TCDS; service bulletins
• Borescope equipment for hands-on inspection practice
• Engine training cutaways and exhibits (most institutions have engine cutaways for visual reference)

Career Pathways

AMT1313C supports careers in turbine-engine-focused roles in Florida's aviation industry:

• Engine Specialist Technician at airline maintenance bases performing engine line maintenance.
• Engine Overhaul Technician at Florida engine-overhaul shops (Standard Aero, MTU Maintenance, smaller independents at Naples, Lakeland, Fort Lauderdale Executive).
• Powerplant Inspector roles supporting fleet reliability monitoring.
• Field Service Engineer for engine OEMs (GE Aviation, Pratt & Whitney, Rolls-Royce, Honeywell, Williams International) supporting Florida customer fleets.
• Aviation Maintenance Manager roles requiring deep technical knowledge of fleet engines.

Special Information

Course Format

Typically 3 credits, 60 contact hours integrated lecture and laboratory. Lab work focuses on engine identification, borescope inspection practice, and analysis of engine condition data.

Articulation

AMT1313C typically articulates toward A.S. in Aviation Maintenance Management or A.S. in Aviation Administration at Florida College System institutions, and may transfer to upper-division programs at Embry-Riddle Aeronautical University.

Industry Certifications

While AMT1313C does not directly prepare for an FAA certificate (FAA Part 147 powerplant coursework leads to the A&P), it supports manufacturer-specific engine type training that follows initial A&P certification.