High-tech hush kit for noisy business jet cabins

Broadband cabin noise, which can greatly fatigue passengers in even the most finely appointed business aircraft, could be a thing of the past if a new syst

By Charles Alcock • Managing Editor

March 19, 2008

Broadband cabin noise, which can greatly fatigue passengers in even the most finely appointed business aircraft, could be a thing of the past if a new system from Britain’s Ultra Electronics and Qinetiq makes it to market. Early next year the partners are expecting to flight test new-generation hybrid active/passive mounts positioned between the fuselage and cabin trim panels.

In ground tests on a cabin section provided by Bombardier, the Airat (active isolator research for aircraft trim) system has been found to reduce noise by between 15 and 30 dBA. The overall objective is a 10- dBA cut, and the partners are confident that this can be achieved, resulting in an actual audible noise reduction of as much as 70 percent.

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