Business jet customers increasingly demand quiet cabin spaces and frequently specify expected noise levels in aircraft delivery/acceptance contracts. To effectively design an optimal acoustic package to meet customer expectations, Jet Aviation and Gulfstream Aerospace Corporation collaborated to develop a high fidelity Statistical Energy Analysis (SEA) model of a furnished wide-body commercial business jet. The SEA model utilized material properties and methodologies derived through extensive tests conducted at Gulfstream's Acoustic Test Facility. Loads and transmission paths, implemented in the model, were examined through a battery of ground and flight tests conducted on the unfurnished aircraft. This SEA model was then used to predict noise levels throughout the furnished aircraft, identify potential issues, optimize sound proofing packages, and devise engineering solutions to reduce noise and vibration. Cabin noise levels on the furnished aircraft were measured nearly a year after the release of SEA predictions. The acoustic flight test confirmed that the aircraft SEA model predicted noise levels with a high degree of accuracy. In this paper, SEA model building methodologies and correlation results for the unfurnished and furnished wide-body VIP business jet aircraft will be presented.
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