Brushless DC motor for primary flight surface actuator

This paper presents the design and the verification of a brushless DC motor integrated in an actuator for aircraft application and can be inserted in the field of so called More Electric Aircraft line of though. Main challenge of More Electric Aircraft concepts is the complete substitution of traditional actuator with Electro-Mechanical Actuator, ensuring the same performance and reliability. In this paper, a brushless DC motor for primary flight surface actuator has been designed and analyzed and the comparison on performance of different motor solutions has been presented. Before the sizing of the motor, an accurate selection of the active material has been performed the actuator architecture has been deeply evaluated to identify the best compromise between performance and reliability. After the electromagnetic design, a thermal analysis has been carried out in order to verify the brushless DC motor temperatures during its operation.