25th Congress of International Council of the Aeronautical Sciences, 3 - 8 September 2006, Hamburg, Germany
Paper ICAS 2006-10.1.1

INFLUENCE OF DIFFERENT STIFFENING TYPES OF THE AIRCRAFT BODY STRUCTURE ON THE NOISE EXPOSURE IN THE CABIN

O. von Estorff, T. König
TU Hamburg-Harburg, Germany

Keywords: acoustics, calculation, stringer, BEM, transmission loss

Preliminary studies have shown that torsional vibrations of the stiffeners of a fuselage form a sound transmission path, they excite the adjacent „aircraft skin fields“ in such a way that further “noise sources” arise. The target is to change torsional momentum of stiffeners such that noise exposure can be reduced.

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