An Overview of the Conceptual Design Studies of Hybrid Electric Propulsion Air Vehicles in the Frame of Clean Sky 2 Large Passenger Aircraft

In the Clean Sky 2 Large Passenger Aircraft (LPA) program the potential of innovative hybrid electric
propulsion (HEP) air vehicle concepts has been investigated by the projects ADEC (Advanced
Engine and Aircraft Configuration) and NOVAIR (Novel Aircraft Configurations and Scaled Flight
Testing Instrumentation). In a combined effort the members of the two projects worked closely
together to identify promising technologies for air vehicle concepts that utilize hybrid electric
powertrains. The vehicle design studies were divided onto the three distinct teams of DLR, TU
Delft/NLR (NOVAIR), and ONERA. This paper will summarize the design efforts and the results
obtained from the HEP design space exploration.

This project has received funding from the Clean Sky 2 Joint Undertaking (JU) under grant agreement No 807097. The JU receives support from the European Union’s Horizon 2020 research and innovation programme and the Clean Sky 2 JU members other than the Union.

The results, opinions, conclusions, etc. presented in this work are those of the author(s) only and do not necessarily represent the position of the JU; the JU is not responsible for any use made of the information contained herein.