Demonstrators for innovative hybrid aircraft propulsion systems

“Hybrid electric propulsion, a solution for developing tomorrow’s low-carbon aircraft.”

Context & Issues

Developing the low-carbon aircraft of tomorrow is a key concern for all players in the aeronautics industry.

As part of the drive to reduce gas emissions from air traffic, the risks associated with the mechanical integration of new equipment in hybrid-electric propulsion systems are being addressed.

Electric hybridization of aircraft engines has been identified as a promising technology for reducing emissions, covering a wide range of aircraft.



Eliminate the risks associated with the effects of installing an electrical machine in a propulsion system


Develop a predictive methodology for the dynamic calculation of hybridized shaft lines, validated on a partial bench.


Build and test a hybrid electric turboprop engine ground demonstrator

Key Development Points


Optimizing the electromagnetic design of electrical machines to analyze installation effects in an aircraft engine


Partial bench validation


Development of a hybrid electric turboprop ground test vehicle


Creation of a digital demonstrator

Project ambitions

Turbolab is an ongoing project; no results can be presented at present.

Our ambitions at the pre-project stage are focused on eliminating the risks associated with the following physical phenomena:

  • Shaft resonance in torsion and bending,
  • Effects of static and dynamic eccentricity of the electric machine rotor on electro-magnetic excitations,
  • Dynamic interactions between gearbox and electrical machine,
  • Radial and axial dynamic behavior of radial flux and axial flux electric machines,
  • Transient analysis (motor mode <> generator mode).



Vibratec project coordinators


Innovation project manager


Aerospace BU Leader

Project funded by CORAC DGAC and EU