AE 433 – Introduction to AircraftGas Turbine Engines

Daniel J. Bodony

Department of Aerospace EngineeringDepartment of Mechanical Science & Engineering (Affiliate)

AE433 Fall 2009

Example: P&W 6000

Major components

AE433 Fall 2015

combustor turbinefan & compressor exhaust

Major components—Description0. freestream conditions1. entrance plane of cowl—isentropically decelerate and compress 2. entrance plane of compressor—compress gas by work3. entrance of combustor—increase gas internal energy by combustion4. entrance of turbine—extract work to power compressor5. exit of turbine6. afterburner—further increase gas internal energy by combustion7. entrance of nozzle8. nozzle throat9. nozzle exit—convert gas internal energy into kinetic energy, i.e., thrust

AE433 Fall 2015

Major components—Essential Fluid Mechanics

• Inlet, compressor, turbine– isentropic flow– shocks– energy exchange via work

• Combustor– combustion– “Rayleigh” flow

• Nozzle– quasi-1D gas dynamics– shocks– {over,under,perfectly}-expanded jet

AE433 Fall 2015

Turbo-jetGeneral Electric J85-GE-17A

Turbo-fanfancompressorcombustorturbine

AE433 Fall 2015

Turbo-fan

Rolls-Royce Trent 1000

Turbo-fanfancompressorcombustorturbine

AE433 Fall 2015

Turbo-propLycoming T 53

Turbo-propfanpropellercompressorcombustorturbine

AE433 Fall 2015

Compressor & Turbine

• How is work done on, extracted from the gas?

Elements of airfoiltheory & “Euler’s” equation

AE433 Fall 2015

So, yes

• We will still need material covered in– AE 311 (incompressible flow)– AE 312 (compressible flow)– ME 300 (thermodynamics)

• Plus, we’ll have to develop new, and more advanced concepts

AE433 Fall 2015