Propulsion systems

Objectives

Presentation of the operation of gas turbine-based machines (Turbojet, turbofan, turboprop, turboshaft)

Skills acquired

Understand the operation of gas turbine-based aero-engines
Know how to identify the parameters influencing performance
Know how to identify machine maintenance methods
Have a global systemic approach Reason in a context of international regulatory constraints
Mobilize a wide field of fundamental and technical sciences related to aeronautical systems.

Thermodynamics basics:
Perfect gas law, equations of state, entropy, enthalpy
isentropic transformations, compressible and incompressible flows, Hugoniot's theorem

Contents
Operation of gas turbine-based machines (Turbojet, turbofan, turboprop, turboshaft)

Engine constitution and operating principles
Recognition of components on cross-sections
Study of technological solutions for guideways, vibration damping, lubrication, sealing, cooling, active clearance control.

Performance and maintenance of machines

Knowledge of pumping phenomena
Reactor regulation and anti-pumping devices
Adjustments and maintenance in operational condition

TP1 : Assembly/disassembly of a turbojet
TP2 : Performance calculation of a turbofan
Teaching method
Online courses on Moodle. Face-to-face sessions are devoted to answering students' questions and applying concepts to case studies.
Practical work is followed by an experimental report and/or oral presentation.

Culture of aeronautics, space and defense