Abstract
Coupled analytical and empirical structural-acoustic models of an aircraft fuselage and wing structure driven by propeller wake/vortex-induced loading are developed to predict structure-borne noise transmission into the aircraft cabin. Free-interface component coupling functions are used to couple the system components for structure-borne noise prediction. Predicted interior noise levels for the first two propeller tones are compared to laboratory-based test results to assess the predictive procedures. The results of the study indicate that accurate prediction of structure-borne noise transmission requires detail finite element modeling of wing panel motion.
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