Origin and prediction of cabin noise due to structure-borne sound (A06)

结构声引起的机舱噪声的起源和预测（A06）

• 批准号: 190291092
• 金额: --
• 依托单位: Institut für Aerodynamik und Strömungstechnik
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/190291092?language=en
• 关键词: Origin; prediction; cabin; noise; due

The project aims for a comprehensive numerical prognosis and assessment of cabin noise, accounting for relevant uncertainties. Hence, realistic aero- and vibroacoustical loads and relevant transfer paths for structure borne sound are considered, especially those originating from the active high-lift system. Furthermore, the noise emitted by the fully installed aircraft engine under asymmetric inflow conditions during landing is considered. Validated loads as input for the numerical prognosis are obtained from vibroacoustical measurements on realistic aircraft parts and from the active high-lift system experiment in the wind tunnel NWB.

该项目的目的是对机舱噪声进行全面的数值预后和评估，并考虑相关的不确定性。因此，考虑了结构传播声音的现实空气和杂音载荷以及相关的传递路径，尤其是源自主动高速公路系统的声音。此外，考虑到着陆期间不对称的流入条件下，完全安装的飞机发动机发出的噪音。经过验证的载荷作为数值预后的输入，是从逼真的飞机零件上的振荡声测量以及风隧道NWB中的主动高速系统实验中获得的。