Double layer attenuation panel
    1.
    发明授权
    Double layer attenuation panel 失效
    双层衰减面板

    公开(公告)号:US4318453A

    公开(公告)日:1982-03-09

    申请号:US76284

    申请日:1979-09-17

    摘要: A double degree acoustic attenuation sandwich panel having a plurality of stacked components adhered together to form a unitary sandwich structure. The structure comprising an impervious facing of thin sheet material, a first honeycomb core with end wise directed cells, a first perforate facing of thin sheet material, a first thin layer of porous fibrous material, a second honeycomb core with end wise directed cells, a second perforate facing of thin sheet material and a second layer of porous fibrous material. The resulting sandwich panel has a predetermined flow through resistance between the outer surface of the first and second layers of porous fibrous material and the cells of the first and second honeycomb cores. The cell of the first and second honeycomb cores may be of equal or different volume cells and may be constructed of similar or dissimilar materials.

    摘要翻译: 一种双重声衰减夹层板,具有粘接在一起形成一体的三明治结构的多个堆叠部件。 所述结构包括薄片材料的不透水面,具有端向导向单元的第一蜂窝芯,面对薄片材料的第一穿孔孔,多孔纤维材料的第一薄层,具有端向定向单元的第二蜂巢芯, 薄片材料的第二穿孔面和多孔纤维材料的第二层。 所得到的夹层板在第一和第二多孔纤维材料层的外表面与第一和第二蜂窝芯的单元之间具有预定的流动阻力。 第一和第二蜂窝芯的电池可以具有相同或不同的体积电池,并且可以由相似或不相似的材料构成。

    Method of manufacturing double layer attenuation panel with two layers
of linear type material
    2.
    发明授权
    Method of manufacturing double layer attenuation panel with two layers of linear type material 失效
    制造双层衰减板的方法,采用两层直线型材料

    公开(公告)号:US4421811A

    公开(公告)日:1983-12-20

    申请号:US106146

    申请日:1979-12-21

    IPC分类号: B32B3/12 G10K11/172 E04B1/82

    摘要: A method of manufacturing a double degree acoustic attenuation sandwich panel having a plurality of stacked components adhered together to form a unitary sandwich structure. The structure comprising an impervious facing of thin sheet material, a first honeycomb core with end wise directed cells, a first perforate facing of thin sheet material, a first thin layer of porous fibrous material, a second perforated facing of thin sheet material, a second honeycomb core with end wise directed cells, a third perforate facing of thin sheet material, the second perforated facing sheet having substantially larger perforations than the first and third sheets, and a second layer of porous fibrous material. The resulting sandwich panel has a pre-determined flow through resistance between the outer surface of the first and second layers of porous fibrous material and the cells of the first and second honeycomb cores. The cells of the first and second honeycomb cores may be of equal or different volume and may be constructed of similar or dissimilar materials.

    摘要翻译: 一种双重声衰减夹层板的制造方法,其具有多个堆叠部件,粘合在一起形成一体的三明治结构。 所述结构包括薄片材料的不透水面,具有端向定向单元的第一蜂巢芯,面向薄片材料的第一穿孔,多孔纤维材料的第一薄层,薄片材料的第二穿孔面,第二孔 具有端面定向细胞的蜂窝芯,面向薄片材料的第三穿孔,所述第二穿孔表面片具有比所述第一和第三片具有大的穿孔,以及第二层多孔纤维材料。 所得夹层板在第一和第二多孔纤维材料层的外表面与第一和第二蜂窝芯的单元之间具有预定的流动阻力。 第一和第二蜂窝芯的电池可以具有相同或不同的体积,并且可以由相似的材料构成。

    Double layer attenuation panel with two layers of linear type material
    3.
    发明授权
    Double layer attenuation panel with two layers of linear type material 失效
    双层衰减面板采用两层直线型材料

    公开(公告)号:US4294329A

    公开(公告)日:1981-10-13

    申请号:US103913

    申请日:1979-12-17

    摘要: A double degree acoustic attenuation sandwich panel having a plurality of stacked components adhered together to form a unitary sandwich structure. The structure comprising an impervious facing of thin sheet material, a first honeycomb core with end wise directed cells, a first perforate facing of thin sheet material, a first thin layer of porous fibrous material, a second perforated facing of thin sheet material, a second honeycomb core with end wise directed cells, a third perforate facing of thin sheet material, the second perforated facing sheet having substantially larger perforations than the first and third sheets, and a second layer of porous fibrous material. The resulting sandwich panel has a pre-determined flow through resistance between the outer surface of the first and second layers of porous fibrous material and the cells of the first and second honeycomb cores. The cells of the first and second honeycomb cores may be of equal or different volume and may be constructed of similar or dis-similar materials.

    摘要翻译: 一种双重声衰减夹层板,具有粘接在一起形成一体的三明治结构的多个堆叠部件。 所述结构包括薄片材料的不透水面,具有端向定向单元的第一蜂巢芯,面向薄片材料的第一穿孔,多孔纤维材料的第一薄层,薄片材料的第二穿孔面,第二孔 具有端面定向细胞的蜂窝芯,面向薄片材料的第三穿孔,所述第二穿孔表面片具有比所述第一和第三片具有大的穿孔,以及第二层多孔纤维材料。 所得夹层板在第一和第二多孔纤维材料层的外表面与第一和第二蜂窝芯的单元之间具有预定的流动阻力。 第一和第二蜂窝芯的电池可以具有相同或不同的体积,并且可以由类似或不相似的材料构成。

    Quiet nacelle system and hush kit
    4.
    发明授权
    Quiet nacelle system and hush kit 失效
    安静的机舱系统和静音套件

    公开(公告)号:US4723626A

    公开(公告)日:1988-02-09

    申请号:US769141

    申请日:1985-08-26

    摘要: A quiet nacelle system for jet aircraft engines includes an elongated nose cowl and nose dome of the nacelle and a sound-attenuating liner applied to the nose cowl, nose dome and fan duct components. The system is particularly suitable for JT3D-3B and JT3D-7 engines for use with DC-8 aircraft. The components may be combined as a hush kit for retrofit in existing nacelle systems.

    摘要翻译: 用于喷气式飞机发动机的安静的机舱系统包括机舱的细长的鼻罩和鼻穹顶,以及应用于鼻罩,鼻罩和风扇管道部件的声音衰减衬垫。 该系统特别适用于与DC-8飞机一起使用的JT3D-3B和JT3D-7发动机。 这些组件可以组合为用于在现有机舱系统中进行改装的撬动套件。

    Double reverse helix agitator
    6.
    发明授权
    Double reverse helix agitator 失效
    双反螺旋搅拌器

    公开(公告)号:US4627735A

    公开(公告)日:1986-12-09

    申请号:US699335

    申请日:1985-02-07

    摘要: The double reverse helix agitator with an internal conveying screw is used in a gas phase olefin polymerization reactor having at least one polymerization section and has helical flights defined by helical blades which are mounted to a shaft, which extend in opposite axial directions and which have approximately the same radius from the axis of rotation of the agitator. The shaft has a spiral screw thread thereon for conveying polymer particles axially by the agitator through a reactor vessel.

    摘要翻译: 具有内部输送螺杆的双反向螺旋搅拌器用于具有至少一个聚合部分的气相烯烃聚合反应器中,并具有由螺旋叶片限定的螺旋形叶片,螺旋叶片安装在轴上,该轴线沿相反轴向延伸并且具有约 与搅拌器的旋转轴线相同的半径。 轴上具有螺旋螺纹,用于通过反应器容器通过搅拌器轴向地输送聚合物颗粒。

    Bulk acoustic absorber panels for use in high speed gas flow environments
    7.
    发明授权
    Bulk acoustic absorber panels for use in high speed gas flow environments 失效
    用于高速气流环境的散装吸声板

    公开(公告)号:US4313524A

    公开(公告)日:1982-02-02

    申请号:US217209

    申请日:1980-12-17

    申请人: Philip M. Rose

    发明人: Philip M. Rose

    摘要: A sandwich type acoustical absorbing panel for use adjacent high speed gas flow areas in and around the engines of high speed aircraft. The panel comprises a pan type base having an imperforate base member and upstanding sides and end walls, an acoustic absorbing medium is disposed within the pan type base, a rigid perforated plate is secured to the distal surfaces of the upstanding sides and end walls for enclosing the acoustic absorbing medium and a sheet of fine woven mesh is secured to the outer surface of the rigid perforated plate. The outer positioned fine woven mesh enhances acoustic properties of the panel and substantially prevents entry of water, dust, chemicals and similar foreign matter from penetrating into the panel structure and reduces the aerodynamic drag loss normally encountered by high speed gas flows across perforated material, such as, that normally used for the outer surface of acoustic panels.

    摘要翻译: 一种夹层式吸声板,用于与高速飞机发动机及其周围的高速气流区域相邻。 面板包括具有无孔基部构件和直立侧面和端壁的平底座基座,在盘状基座内设置吸声介质,刚性多孔板固定到直立侧面和端壁的远侧表面以封闭 吸声介质和细编织网片固定到刚性多孔板的外表面。 外部定位的细编织网增强了面板的声学特性,并且基本上防止了水,灰尘,化学物质和类似异物进入面板结构中,并且降低了高速气流通过穿孔材料通常遇到的空气动力学阻力损失, 如通常用于声学面板的外表面的那样。

    Honeycomb noise attenuation structure
    8.
    发明授权
    Honeycomb noise attenuation structure 失效
    蜂窝噪声衰减结构

    公开(公告)号:US5041323A

    公开(公告)日:1991-08-20

    申请号:US426764

    申请日:1989-10-26

    申请人: Philip M. Rose Jia Yu

    发明人: Philip M. Rose Jia Yu

    摘要: A double layer structural honeycomb sandwich noise suppression panel for use in severe environments such as aircraft turbine engine housings. Two honeycomb core sheets having multiple cells transverse to the sheets are sandwiched around and bonded to a septum sheet consisting of a wire cloth sheet alone or bonded to a sheet of perforated material. A thin sheet of impervious material is bonded to one surface of the sandwich and a facing of thin perforated sheet material is bonded to the other sandwich surface. The panel has improved simplicity, structural strength with unusually light weight.

    摘要翻译: 一种用于恶劣环境(如飞机涡轮发动机外壳)的双层结构蜂窝夹层噪声抑制面板。 具有横跨片材的多个细胞的两个蜂窝状芯片被夹在中间并且被粘合到由单独的丝布片组成的隔膜片上,或者粘合到一张穿孔材料上。 一层薄薄的不透水材料粘合在夹层的一个表面上,薄的多孔板材的表面与另一个夹层表面结合。 该面板具有改善的简单性,结构强度与异常轻的重量。

    Quiet nacelle system and hush kit
    9.
    发明授权
    Quiet nacelle system and hush kit 失效
    安静的机舱系统和静音套件

    公开(公告)号:US4817756A

    公开(公告)日:1989-04-04

    申请号:US78560

    申请日:1987-07-28

    摘要: A quiet nacelle system for jet aircraft engines includes a nose cowl and nose dome having a sound-attenuating liner, a concentric ring between the nose cowl and nose dome, and fan duct components having a sound-attenuating liner. The system is particularly suitable for JT3D-3B and JT3D-7 engines for use with DC-8 aircraft. The components may be combined as a hush kit for retrofit in existing nacelle systems.

    摘要翻译: 用于喷气飞机发动机的安静的机舱系统包括具有声音衰减衬垫的鼻罩和鼻穹顶,鼻罩和鼻穹顶之间的同心环以及具有声音衰减衬垫的风扇管道部件。 该系统特别适用于与DC-8飞机一起使用的JT3D-3B和JT3D-7发动机。 这些组件可以组合为用于在现有机舱系统中进行改装的撬动套件。

    Turbofan duct with noise suppression and boundary layer control
    10.
    发明授权
    Turbofan duct with noise suppression and boundary layer control 失效
    具有噪声抑制和边界层控制的Turbofan管道

    公开(公告)号:US4749150A

    公开(公告)日:1988-06-07

    申请号:US813234

    申请日:1985-12-24

    IPC分类号: B64C1/40 B64C21/06 B64D33/02

    摘要: A boundary layer control device is installed in the acoustically treated inlet duct of a turbofan engine. The device sucks off the turbulent boundary layer of air flowing over the inner or "air wetted" surface of the inlet during aircraft take-off, cruise and approach. The lip of the inlet can thus be made thinner to reduce drag during cruise without degradation of fan performance during take-off. The acoustic liner of the inlet comprises a microporous honeycomb sandwich structure through which air may be sucked at various locations through headers and conduits connected to an onboard pump.

    摘要翻译: 边界层控制装置安装在涡轮风扇发动机的声处理进气管道中。 在飞机起飞,巡航和接近期间,该装置吸收在入口的内部或“空气润湿”表面上流动的空气的湍流边界层。 因此,入口的唇缘可以变薄,以减少巡航过程中的阻力,而不会在起飞时风扇性能下降。 入口的声学衬垫包括微孔蜂窝夹层结构,空气可以通过空气通过连接到车载泵的集管和管道在各个位置被吸入。