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Shock and Vibration
Volume 20 (2013), Issue 5, Pages 989-1000
http://dx.doi.org/10.3233/SAV-130799

Adaptive Noise Cancellation System for Low Frequency Transmission of Sound in Open Fan Aircraft

Steven Griffin, Adam Weston, and Jeff Anderson

Boeing Company, Seattle, WA, USA

Received 9 August 2012; Revised 15 March 2013; Accepted 25 March 2013

Copyright © 2013 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper describes the use of a structural/acoustic model of a section of a large aircraft to help define the sensor/actuator architecture that was used in a hardware demonstration of adaptive noise cancellation. Disturbances considered were representative of propeller-induced disturbances from an open fan aircraft. Controller on and controller off results from a hardware demonstration on a portion of a large aircraft are also included. The use of the model has facilitated the development of a new testing technique, closely related to modal testing, that can be used to find good structural actuator locations for adaptive noise cancellation.