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    NOISE REDUCTION DEVICE
    3.
    发明公开
    NOISE REDUCTION DEVICE 有权
    RAUSCHVERRINGERUNGSVORRICHTUNG

    公开(公告)号：EP2495423A1

    公开(公告)日：2012-09-05

    申请号：EP10826698.2

    申请日：2010-10-26

    申请人： IHI Corporation

    发明人： TANAKA, Nozomi ,  KUSUDA, Shinya ,  OISHI, Tsutomu ,  OBA, Yoshinori

    IPC分类号： F02K1/34

    CPC分类号： F02C6/08 ,  F02K1/34 ,  F02K1/386

    摘要： A noise reduction system includes: a microjet ring (16) provided at an exhaust side peripheral edge of a main nozzle of a jet engine, and has a plurality of injection pipes (26) formed in a circumferential direction thereof at regular intervals; and a supply path configured to take part of compressed air in from a flow path in an upstream side of a combustor in the jet engine, and to guide the part of compressed air to the plurality of injection pipes (26), wherein the plurality of injection pipes (26) is configured to inject the part of compressed air to a jet flow.

    摘要翻译： 一种噪声降低系统，包括：设置在喷气发动机的主喷嘴的排气侧周边的微喷射环（16），并且具有以规则的间隔沿圆周方向形成的多个喷射管（26） 以及供给路径，被配置为从喷气发动机中的燃烧器的上游侧的流路中取出一部分压缩空气，并将压缩空气的一部分引导到多个喷射管（26），其中， 喷射管（26）构造成将一部分压缩空气喷射到喷射流。

    SOUND-ABSORBING PANEL AND MANUFACTURING METHOD FOR SAME
    5.
    发明公开
    SOUND-ABSORBING PANEL AND MANUFACTURING METHOD FOR SAME 审中-公开

    公开(公告)号：EP3636550A1

    公开(公告)日：2020-04-15

    申请号：EP18812702.1

    申请日：2018-06-05

    申请人： IHI Corporation ,  Japan Aerospace Exploration Agency ,  Gifu Plastic Industry Co., Ltd.

    发明人： OISHI, Tsutomu ,  HOJO, Masahiro ,  SHIBAGAKI, Shingo

    IPC分类号： B64D33/00 ,  B32B3/12 ,  B32B27/34 ,  B64C1/00 ,  F02C7/045

    摘要： A sound-absorbing panel to be used affixed to a jet engine of an aircraft, provided with: a resin core layer 20 having a first surface, a second surface disposed on the side opposite from the first surface, and multiple partitions extending between the first surface and second surface so as to partition multiple cells; a resin first skin layer 30a laminated on the first surface of the core layer 20; and a resin second skin layer 40a laminated on the second surface of the core layer 20. The first skin layer 30a is disposed so as to face the external space while in use, and has multiple through-holes 60 for providing communication between internal spaces of the multiple cells S and external space faced by the first skin layer 30a. The core layer 20 has openings 50 for providing communication between the internal spaces of the multiple cells and external space of the core layer 20.

    NOISE REDUCTION DEVICE WITH CHAMBER
    6.
    发明公开
    NOISE REDUCTION DEVICE WITH CHAMBER 审中-公开
    RAUSCHVERRINGERUNGSVORRICHTUNG麻省理工学院

    公开(公告)号：EP2495424A1

    公开(公告)日：2012-09-05

    申请号：EP10826774.1

    申请日：2010-10-27

    申请人： IHI Corporation

    发明人： TANAKA, Nozomi ,  KUSUDA, Shinya ,  OISHI, Tsutomu ,  OBA, Yoshinori

    IPC分类号： F02K1/34

    CPC分类号： F02K1/34 ,  F02C6/08 ,  F02K1/38 ,  F02K1/44 ,  F02K1/46 ,  F02K1/52 ,  F05D2220/323 ,  F05D2260/96

    摘要： A noise reduction system with a chamber includes a chamber (17) which is provided at a portion of a supply path connecting a flow path in an upstream side of a combustor in a jet engine to a plurality of microjet nozzles which is provided at an exhaust side peripheral edge of a main nozzle of the jet engine, wherein the supply path is configured to supply part of compressed air from the flow path into the chamber (17), and the chamber (17) is configured to inject the compressed air through the plurality of the microjet nozzles (63) to a jet flow.

    摘要翻译： 具有室的降噪系统包括：室（17），其设置在将喷气发动机中的燃烧器的上游侧的流路连接到设置在排气口处的多个微喷嘴的供给路径的一部分 其中所述供应路径被构造成将来自所述流动路径的压缩空气的一部分供应到所述室（17）中，并且所述室（17）构造成将所述压缩空气喷射通过所述室 多个微喷嘴（63）到喷射流。

    NOISE REDUCING DEVICE, AND JET PROPULSION SYSTEM
    8.
    发明公开
    NOISE REDUCING DEVICE, AND JET PROPULSION SYSTEM 审中-公开
    GERÄUSCHMINDERUNGSVORRICHTUNGUND STRAHLANTRIEBSSYSTEM

    公开(公告)号：EP2256327A1

    公开(公告)日：2010-12-01

    申请号：EP09715023.9

    申请日：2009-02-25

    申请人： IHI Corporation

    发明人： OISHI, Tsutomu ,  OBA, Yoshinori

    IPC分类号： F02K1/34 ,  F02K1/00 ,  F02K1/44 ,  F02K1/46 ,  F02K3/06

    CPC分类号： F02K3/06 ,  B64C7/02 ,  B64D27/18 ,  F02K1/34 ,  F02K1/44 ,  F02K1/46 ,  F05D2260/96

    摘要： A noise reducing device in a jet engine that has a cylindrical casing, a cylindrical partition wall that is inserted in the casing while protruding partially from a trailing edge of the casing, and a compressor that compresses air that is taken into the cylindrical partition wall, with the inside of the cylindrical partition wall serving as a duct in which a core stream of high-speed air flows, and the space between the cylindrical partition wall and the casing serving as a duct in which a bypass stream of low-speed air flows, and being connected with a wing of an airplane by a pylon that has a projection portion that extends beyond the casing to the downstream of the core stream and the bypass stream, the noise reducing device includes a nozzle, disposed at the pylon on the downstream of the core stream, that injects a fluid toward a noise generation source that is produced from the mutual approach of an ambient air stream that is produced outside of the bypass stream and the core stream.

    摘要翻译： 一种喷气发动机中的降噪装置，其具有圆筒形壳体，一部分从壳体的后缘突出地插入壳体中的圆筒形分隔壁，以及压缩器，该压缩机压缩进入圆筒形分隔壁的空气， 其中圆筒形分隔壁的内部用作高速空气的芯流的管道，以及作为低速空气流的旁路流的圆筒形分隔壁和用作管道的壳体之间的空间 并且通过具有延伸超出壳体的突出部分到芯流和下游流的下游的塔架与飞机的翼连接，降噪装置包括设置在下游的塔架处的喷嘴 的核心流，其将流体朝向由在旁路流之外产生的环境空气流的相互接近而产生的噪声产生源和核心层 EAM。

    JET FLOW DISCHARGE NOZZLE AND JET ENGINE
    9.
    发明公开
    JET FLOW DISCHARGE NOZZLE AND JET ENGINE 有权
    澳大利亚国家石油公司（Strahlströmungundzugehöriges）Strahltriebwerk

    公开(公告)号：EP2123894A1

    公开(公告)日：2009-11-25

    申请号：EP07850783.7

    申请日：2007-12-18

    申请人： IHI Corporation

    发明人： OBA, Yoshinori ,  OISHI, Tsutomu

    IPC分类号： F02K1/48 ,  F02C7/04

    CPC分类号： F02K1/386 ,  B64D29/06 ,  B64D33/06

    摘要： A jet flow discharge nozzle includes a tubular partition wall, a tubular casing which covers an outer periphery of the tubular partition wall, and a bifurcation which extends in an axial direction of the tubular partition wall and the casing so as to support downstream ends of the tubular partition wall and the casing from outside. Inside of the tubular partition wall is defined as a flow path for a high-speed core flow. A space between the tubular partition wall and the casing is defined as a flow path for a low-speed bypass flow. A pair of first projections is provided at a downstream edge of the tubular partition wall near the bifurcation at positions symmetric about the bifurcation. One of ridges of each of the first projections faces an upstream side. The invention reduces noise by avoiding adverse effects of the presence of the bifurcation on an increase in noise.

    摘要翻译： 喷流排出喷嘴包括管状分隔壁，覆盖管状隔壁外周的管状壳体和沿管状分隔壁和壳体的轴向延伸的分支，以支撑管状分隔壁的下游端 管状分隔壁和外壳外壳。 管状分隔壁的内部被定义为用于高速芯流的流动路径。 管状分隔壁和壳体之间的空间被定义为用于低速旁路流动的流动路径。 一对第一突起设置在管状分隔壁的靠近分叉处的位置处的分支处的下游边缘处，位于与分叉对称的位置处。 每个第一突起的脊之一面向上游侧。 本发明通过避免分岔存在对噪声增加的不利影响来降低噪声。