公开(公告)号：US09476533B2

公开(公告)日：2016-10-25

申请号：US14595838

申请日：2015-01-13

申请人： EMBRAER S.A.

发明人： Sideto Futatsugi ,  Francisco Keller Klug ,  André Gasparotti

IPC分类号： F16K47/02 ,  F16L55/033

CPC分类号： F16L55/033 ,  F16L55/041

摘要： Fluid attenuator systems and methods for attenuating fluid ripple waves within a main fluid line (e.g., a main hydraulic fluid line of an aircraft hydraulic system). At least one attenuator branch conduit may be provided in fluid communication with and at substantially a right angle to the main fluid line with a porous material positioned therewithin (e.g., at an open inlet or a closed distal end of the at least one attenuator branch conduit). The porous material may be a metallic or ceramic open-cell foam material. Multiple attenuator branch conduits may be provided with each having a different length as compared to the others. In such embodiments, the porous material may (or may not) be positioned within the different length attenuator branch conduits (e.g., at an open inlet or a closed distal end of respective ones of attenuator branch conduits).

摘要翻译： 用于衰减主流体管线（例如，飞行器液压系统的主液压流体管线）内的流体波纹波的流体衰减器系统和方法。 可以提供至少一个衰减器分支导管，其与主流体管线流体连通并且与主流体管线基本成直角，其中多孔材料定位在其中（例如，在至少一个衰减器分支导管的开放入口或封闭的远端处 ）。 多孔材料可以是金属或陶瓷开孔泡沫材料。 可以提供多个衰减器分支导管，每个衰减器分支导管与其它分支导管的长度不同。 在这种实施例中，多孔材料可以（或可以不）定位在不同长度的衰减器分支导管内（例如，在相应的衰减器分支导管的开放入口或封闭的远端）。

公开(公告)号：US10040535B2

公开(公告)日：2018-08-07

申请号：US14957185

申请日：2015-12-02

申请人： EMBRAER S.A.

发明人： Sideto Futatsugi ,  Israel Pereira ,  Danillo Cafaldo Dos Reis

IPC分类号： B32B3/12 ,  B64C1/40 ,  G10K11/172 ,  B64C1/00

摘要： Composite acoustic panels are provided which may usefully be employed for aircraft interior panel assemblies. The composite acoustic panels may include a core member defining opposed surfaces, and a pair of exterior face sheets each attached to a respective one of the opposed surfaces of the core member. At least one of the face sheets may be microperforated. The core member comprises an adjacent plurality of tubular channels extending through a thickness dimension of the core member between the opposed surfaces thereof, while predetermined adjacent ones of the tubular channels are filled with a material to define a series of filled tubular channels which are adjacent to a region of open tubular channels. Certain ones of the open tubular channels may be partially filled with an acoustic dampening material. Discontinuous viscoelastic layers may be positioned so as to overlay central regions of the adjacent plurality of the open tubular channels which are bounded by an array of the filled tubular channels.