Airbus Quiets the A320neo’s ‘Barking Dog’ Sound

Airbus has modified the “barking dog” noise generated by the A320neo’s power transfer system to be quieter during ground maneuvering. The characteristic barking sound has been a prominent feature of the A320 family of aircraft, and can usually be heard in the cabin when the differential pressure between the two systems surpasses 500psi. Airbus claims that the sound generated by the power-transfer unit is going to be “significantly reduced,” including suppression of vibrations from within the pumps and the installation of two additional dampers – one close to the engines and the other near the wing root.

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[Photo: Airbus]