Reference Prototype of High Lift Motor for Distributed Electric Propulsion All-Electric Aircraft

The all-electric aircraft with a distributed electric propulsion system being studied in this article uses 11 motors, of which 10 are specifically used for lift enhancement during takeoff and landing. This paper describes the iterative design method of the open reference prototype of the high-lift motor, including electromagnetic design, support design, and verification of temperature, static load, and rotor dynamics. Firstly, the evolutionary algorithm based on the approximate model is used to optimize the multi-objective in the electromagnetic design process. Under the premise of satisfying the aerodynamic characteristics, the permanent magnet mass and torque ripple are reduced; Secondly, a general analytical model of the Halbach array permanent magnet synchronous motor was established, and the power density of the motor was further improved by parameter optimization; Thirdly, in the design of support components, the influence of static load on bearing selection and shaft design is analysed, and resonance was avoided by vibration frequency, critical speed and modal analysis. Finally, the no-load, rated load, temperature, static load, and pulling test were verified by finite element model simulation and prototype.