Large Aircraft Acoustic Flight Testing for Cabin Noise Prediction

Creating a quiet business-jet cabin is a key factor in ensuring a healthy and satisfying cabin experience for passengers. The lower the cabin sound levels, the better the presumed experience will be. As such, it has become ever more important for manufacturers to be able to accurately predict cabin sound levels. Statistical Energy Analysis (SEA) and modelling methods have been implemented to predict interior noise levels. The SEA results are based on an analysis of empty aircraft both on the ground and in the air. The authors will discuss a collaborative effort between Jet Aviation and Gulfstream Aerospace Corporation to use a microphone array to measure and map Sound Pressure Levels (SPLs) inside aircraft while they are on the ground and in the air. Once noise sources are identified, the companies use that information to create sound-proofing packages that meet the manufacturer