Sound quality assessment of a medium-range aircraft with enhanced fan-noise shielding design

Abstract The investigation of technologies that can improve the sustainability air transport system requires not only development alternative fuel concepts and novel vehicle but also definition appropriate assessment strategies. Regarding noise, should reflect situation communities living near airports, i.e., addressing sound levels accounting for annoyance caused by aircraft noise. For this purpose, conventional A-weighted pressure level metrics provide initial limited information as level- frequency-dependency human hearing is accounted in a simplified manner. Ideally, subjective evaluations are required to adequately quantify perceived short-term associated with However, listening tests time-consuming suitable be applied during conceptual design stage, where large solution space needs explored. Aiming at bridging gap, work presents methodology quality computational noise predictions, which hereby conducted terms objective psychoacoustic metrics. proposed medium-range fan shielding architecture take-off landing procedures. relevance individual sources, airframe engine contributions, their dependencies on flight procedures assessed loudness, sharpness, tonality. Moreover, steered towards community assessment, impacts brought analysed. based modified annoyance, metric provides quantitative description combination different sensations. present understood an essential step low-annoyance design.