公开(公告)号：WO2016097939A1

公开(公告)日：2016-06-23

申请号：PCT/IB2015/059473

申请日：2015-12-09

Applicant: BOMBARDIER INC. ,  SHORT BROTHERS PLC

Inventor： WONG, Raymond Lee Man

IPC: B64C1/40 ,  B64C21/02

CPC classification number: B64C1/40 ,  B64C3/187 ,  B64C3/26 ,  B64C21/02 ,  B64C2230/08 ,  B64C2230/14 ,  B64C2230/22 ,  B64C2230/24 ,  B64D2033/0206 ,  Y02T50/166

Abstract: Sound absorbers and airframe components comprising such sound absorbers are disclosed. In one embodiment, an airframe component comprises an aerodynamic surface (48) and a sound absorber (38). The sound absorber (38) comprises a perforated panel (40) having a front side exposed to an ambient environment outside of the airframe component and an opposite back side. The panel (40) comprises perforations extending through a thickness of the panel for permitting passage of sound waves therethrough. The sound absorber (38) also comprises a boundary surface spaced apart from the perforated panel. The boundary surface and the back side of the perforated panel (40) at least partially define a cavity in the airframe component for attenuating some of the sound waves entering the cavity via the perforations in the perforated panel (40).

Abstract translation: 公开了包括这种吸声器的吸声器和机身部件。 在一个实施例中，机身部件包括空气动力学表面（48）和吸声器（38）。 吸声器（38）包括穿孔面板（40），其具有暴露于机身部件外部的周围环境的前侧和相对的后侧。 面板（40）包括穿过板的厚度的穿孔，以允许声波通过其中。 吸声器（38）还包括与穿孔板间隔开的边界表面。 穿孔板（40）的边界表面和背面至少部分地限定了机身部件中的空腔，用于通过穿孔板（40）中的穿孔来衰减进入空腔的一些声波。