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Concept and design of a high power dense propulsion system for electric aircraft
Beneke, Lennart
Beneke, Lennart
Type
Tesis de maestría
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Abstract
"The present thesis proposes a conceptual design of a tiltable propulsion system for the ALBACOPTER® 1.0, an eVTOL aircraft with a take-off mass of800kg. Usually, the propulsion systems of eVTOLs are direct drives due to their simple design. However, since the propeller thrust in relation to the take-off mass is the most important criterion for vertical take-off aircraft, power-dense drives are of maximum importance. Therefore, a propeller drive concept combining a high-performance synchronous machine with a gearbox is developed and investigated with regard to its performance. For this purpose, all boundary conditions are determined. First, the propeller is simulated in order to define its relevant speeds and gear’s reduction ratio. Then the aerodynamic loads are estimated using data from wind tunnel tests and CFD simulations and qualitatively compared with ownwindtunneltests. It is shown that the moments induced by oblique propeller inflow play a significant role compared to the lateral forces. By calculating and classifying these and other potential loads, concepts for the drive train and the tilt actuator are developed and evaluated".
Description
Tesis Energía y Ambiente (maestría) - Instituto Tecnológico de Buenos Aires, Buenos Aires - Karlsruher Institut für Technologie, Karlsruhe, 2023
Date
2023-10-02
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Keywords
ELECTRIC AIRCRAFT, EVTOL, PROPULSION SYSTEM, POWER DENSITY, ELECTRIC DRIVETRAIN, PROPELLER AERODYNAMICS, TILT MECHANISM, AERONAVES ELÉCTRICAS, EVTOL, SISTEMA DE PROPULSIÓN, DENSIDAD DE POTENCIA, TREN DE POTENCIA ELÉCTRICO, AERODINÁMICA DE HÉLICES, MECANISMO DE INCLINACIÓN, CAJA DE ENGRANAJES, MÁQUINA SINCRÓNICA