The TELEM hybrid electric propulsion system / R. Schaber (MTU Aero Engines AG, Munich, Germany), J. Schroeter (Institute of Turbomachinery and Flight Propulsion, Technical University of Munich, Garching, Germany), F. Armbrüster (MTU Aero Engines AG, Munich, Germany) ; Deutscher Luft- und Raumfahrtkongress 2024