Ultra and QinetiQ developing new quiet cabin technology

Aviation International News » March 2004
March 28, 2007, 7:30 AM

Two UK-based specialists in the noise-reduction field are developing new technology that promises a substantial decrease in cabin noise. Developed by Ultra Electronics of Cambridge and QinetiQ of Farnborough, it is based on a hybrid system of trim panel mounts that incorporate both active and passive noise-reduction elements. The system
is expected to reduce the amount of broadband noise produced by the rushing of air over the fuselage by minimizing trim panel vibration. Laboratory tests suggest a cabin noise reduction of at least 10 decibels. A full flight demonstration is the next step.

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