26th Congress of International Council of the Aeronautical Sciences
including the 8th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference
14 - 19 September 2008, Anchorage, Alaska, USA
Paper ICAS 2008-4.9.3

A NOVEL RECIPROCAL SOUND TRANSMISSION MEASURING METHOD, APPLIED ON A COMPOSITE FUSELAGE

H. van der Wal, P. Sijtsma, B. Berton*, P. Hardy*
NLR, Netherlands; *Dassault Aviation, France

Keywords: Cabin noise, Fuselage wall, Reciprocal sound transmission measuring method, Nearfield acoustic holography, Sound intensity

An experimental method is described for reciprocal Transmission Loss measurement on a business jet type fuselage barrel. The barrel volume is excited with a calibrated monopole source, determining the pressure normal derivative of the exterior barrel surface by Nearfield Acoustic Holography from microphone array measurements close to the barrel.

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