Aeronautic Propulsion Systems

Summer Term

Lecturer: Dr.-Ing Christian Helcig

Assistence: Patrick Bachmann & Philippe Bieli

Target Group:

  • Students of aerospace in mechanical engineering with basic knowledge in the field of fluid machinery or flight propulsion.

Allgemeine Angaben:

  • Bachelor module with 5 ECTS
  • Lecturer (2 SWS) during summer term
  • Exercise (1 SWS) during summer term
  • Repetitory (by arrangement)


  • Chapter 1 (Introduction): Concept of flying, what is a turbojet engine? , working principles of turbomachines
  • Chapter 2 (Thermodynamic basics): Ideal Joule-Brayton-Cycle, basics of h-s-diagram
  • Chapter 3 (Major aero engine components): Main engine components (inlet, fan, compressor, shafts, combustion chamber, turbine, nozzle)
  • Chapter 4 (Velocity vector diagrams): Basic principle of velocity triangles, derivation of the Euler equation, h-s-diagram of turbomachinery stages
  • Chapter 5 (Rotational mechanism): Rotors, stationary parts
  • Chapter 6 (Special systems, aspects and challenges): Engine placement, multidisciplinary design procedure, how to start an engine?, bypass flow, secondary air systems, fuel system, thrust, materials
  • Chapter 7 (Engine Performance): Compressor and turbine performance maps, engine performance limits
  • Chapter 8 (Jet propulsion systems): Turbojet systems, turbofan systems, ramjet systems, scramjet systems, rocket engine systems, thrust calculation
  • Chapter 9 (Propeller propulsion systems): Piston engine systems, turboprop systems, turboshaft systems, propeller thrust calculation
  • Chapter 10 (Future propulsion systems): Sustainable fuels, electric engines, new gasturbine-cycle-based concepts, the wet engine concept


Current information and dates can be found in TUMOnline.