Design Method of Aircraft Electric Machines for Hybrid Propulsion Systems

This paper describes the methodology adopted for the development of electrical machines for hybrid propulsion systems (HPS) of aircrafts. A nominal power of 400 kW and a rotating speed of 12,000 rpm are the main specifications of the machine taken as reference. All the design steps, including the machine concept generation, the multi-physics numerical approach and the experimental evaluation of the performance are considered. Additionally, challenges encountered during the design process and the methods to overcome them are also presented. The technical failure observed during the testing of the prototype is being documented and the reasons which led to it are analyzed.