Development and validation of preliminary analytical models for aircraft interior noise prediction

Abstract A preliminary version of an airplane interior noise prediction model has been developed. This model is based on a power flow type of analysis. For validation of the model, predictions are made of the sound transmission into a simple unpressured, unstiffened cylinder under random and harmonic excitations. These are compared against experimental results and statistically significant differences between predictions and measurements are identified. It is concluded that these differences are related primarily to input data deficiencies.