Electromagnetically-excited noise and vibrations in aeronautic applications

With the more electric aircraft trend, some hydraulic actuators are increasingly replaced by electric actuators and more electrical systems (actuators, generators, power converters) are present on board, increasing the presence of electromagnetically-excited noise and vibrations, in particular e-motor NVH issues. The propulsion itself is electrified in Unmanned Aerial Systems (UAS) or in Distributed Electrical Propulsion (DEP) airplane concepts, as well as in hybrid electric aircraft.

These electrical systems can be placed close to passengers, resulting in unpleasant acoustic noise. Electromagnetic vibrations can also lead to electromechanical fatigue and reduce the lifetime of the actuators. To maximize comfort and reliability it is therefore important to identify and lower noise and vibration sources in these electrical systems, including

- drone, UAS and DEP electric propulsion motors (often outrunners)
- electric propulsion motors of hybrid electric aircrafts
- on-board electrical generators and power converters
- spoiler, aileron, elevator, rudder actuators
- landing gear actuators (electric assisted brakes)
- door actuators

EOMYS can help you to optimally design these electrical systems including NVH based on engineering consulting activities or MANATEE software.

EOMYS can also solve technical issues after manufacturing using specialized electrical, vibration and acoustic measurements.

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