This paper presents the design of an axial flux permanent magnet synchronous motor tailored to meet the drive requirements of rotorcraft. Initially, the key performance indicators of the motor were determined based on the specific operational conditions of the aircraft. Following this, the structural parameters of the motor were designed accordingly. Subsequently, a three-dimensional finite element model was developed to simulate and analyze the electromagnetic performance. Particular emphasis was placed on investigating the effects of air gap variation and yoke deflection on the output characteristics. The results demonstrate that the designed motor maintains a compact structure while fulfilling all specified performance criteria. Furthermore, it exhibits strong adaptability to variations in air gap and yoke deflection, thereby validating the feasibility of the proposed design approach.