Rotary Electromechanical Actuator for Next-Generation Thin-Wing Aircraft Flight Control

ABSTRACT: We propose to develop and test both two and five inch direct hingeline aileron actuators. The optimization of EM actuator parameters starts with straightforward math and requirements definition but becomes complicated by soft constraints like speed vs life and application specific details of the cost function. The BLDC motors we propose to build and test have significantly better metrics than any comparable motor currently available. Working with prime contractor feedback we will develop concepts for redundancy and failsafe disconnects. We will also develop and test a continuously variable reducer which promises to significantly enhance the thermal performance, particularly in the presence of steady loads. BENEFIT: A hingeline EM actuation system promises to save weight and energy allowing increased aircraft performance and reliability. The variable gearbox may allow energy savings in non military applications as well.