Engine Sonic Load Prediction of Blended Wing Body Aircraft

Abstract The sonic load of the engine is input for cabin noise design and acoustic fatigue verification in civil aircraft. Based on static database, an engineering prediction method blended wing body aircraft flight developed. In process prediction, sound source position correction, geometric diffusion, effect airframe scattering component are considered. air-frame level simulated analyzed. overall pressure distribution spectrum at typical positions given. results show that fan inlet most important BWB surface, maximum value upper surface 134 dB, which higher than conventional crane