CN110313030A - 多层声学衬里 - Google Patents

多层声学衬里 Download PDF

Info

Publication number
CN110313030A
CN110313030A CN201880012855.2A CN201880012855A CN110313030A CN 110313030 A CN110313030 A CN 110313030A CN 201880012855 A CN201880012855 A CN 201880012855A CN 110313030 A CN110313030 A CN 110313030A
Authority
CN
China
Prior art keywords
plate
face
layer
group
supporting layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201880012855.2A
Other languages
English (en)
Inventor
安德鲁·迈克尔·拉赫
大卫·帕特里克·考尔德
格拉哈姆·弗兰克·豪沃思
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MRA Systems LLC
Original Assignee
MRA Systems LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MRA Systems LLC filed Critical MRA Systems LLC
Publication of CN110313030A publication Critical patent/CN110313030A/zh
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/24—Heat or noise insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/06—Open cell foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/12—Gel
    • B32B2266/126—Aerogel, i.e. a supercritically dried gel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/06—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with front fan
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/32—Application in turbines in gas turbines
    • F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/963—Preventing, counteracting or reducing vibration or noise by Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/601—Fabrics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

一种声学衬里，可以包括：支撑层，该支撑层具有一组具有开口面的分隔腔；第一面对板和第二面对板，该第一面对板和第二面对板均具有穿孔并且可操作地联接到支撑层，使得面对板覆盖并且闭合开口面；和气凝胶层，气凝胶层可操作地联接到第二面对板。

Description

多层声学衬里
背景技术
消声面板可用于降低噪音。例如，飞行器可包括发动机机舱中的消声面板，以减少涡轮发动机的噪声排放。消声面板通常具有夹层结构，该夹层结构包括环绕蜂窝型内部结构的板。
发明内容
在一个方面，声学衬里包括具有第一侧和间隔开的第二侧的支撑层，其中支撑层包括在第一侧和第二侧之间延伸的一组分隔腔，并且该组分隔腔具有开口面。声学衬里还包括第一面对板，该第一面对板可操作地联接到支撑层，使得第一面对板覆盖并且闭合第一侧的开口面，其中一组穿孔包含在第一面对板中，并且与包含在一组分隔腔中的腔流体连通，以形成一组声学谐振器。声学衬里还包括第二面对板，该第二面对板可操作地联接到支撑层，使得第二面对板覆盖并且闭合第二侧的开口面，其中一组穿孔包含在第二面对板中，并且与包含在该组分隔腔中的腔流体连通。声学衬里进一步包括气凝胶层，该气凝胶层在第二面对板的与支撑层相对的一侧可操作地联接到第二面对板。
在另一方面，一种飞行器发动机组件包括飞行器发动机、机舱，机舱被构造成围绕飞行器发动机并具有限定对周围空气开放的入口的入口区段，并且其中机舱至少部分地限定通过该组件的环形气流路径。飞行器发动机组件还包括至少一个可操作地联接到飞行器发动机或机舱中的至少一个声学面板，并且该至少一个声学面板包括具有第一侧和间隔开的第二侧的支撑层，该支撑层包括在第一侧和第二侧之间延伸的一组分隔腔，并且该组分隔腔具有开口面。声学面板进一步包括第一面对板，该第一面对板可操作地联接到支撑层，使得第一面对板覆盖并且闭合第一侧的开口面，其中一组穿孔包含在第一面对板中，并且与包含在一组分隔腔中的腔流体连通，以形成一组声学谐振器，并且声学面板还包括第二面对板，第二面对板可操作地联接到支撑层，使得第二面对板覆盖并且闭合第二侧的开口面，其中一组穿孔包含在第二面对板中，并且与包含在该组分隔腔中的腔流体连通，并且气凝胶层在第二面对板的与支撑层相对的一侧可操作地联接到第二面对板，其中，第一面对板与环形气流路径续接。
附图说明
在附图中：
图1是根据现有技术的典型声学面板的侧剖视图。
图2是图1的声学面板的立体图，其中为清楚起见，部分被移除。
图3是根据本发明描述的各个方面的具有声学面板的飞行器发动机组件的示意图，其中为清楚起见，外机舱的一部分被切除。
图4是图3的声学面板的侧剖视图。
图5是图3的声学面板的立体图，其中为清楚起见，部分被移除。
具体实施方式
现代飞行器发动机和机舱结构通常包括具有穿孔的声学面对表皮的消声面板。图1示出了根据现有技术的典型声学面板的侧视图。声学面板2包括设置在无孔背板6和穿孔板或面对板8之间的开口框架4。开口框架4形成具有一组带有开口面的分隔腔或单元9的支撑层。开口框架4在开口框架4的相对的前侧和后侧具有开口面。以这种方式，开口框架4在开口框架4，背板6和面对板8之间的开口空间中形成一组单元9。
如图2中更清楚地示出，由设置在背板6和面对板8之间的开口框架4所形成的单元9，每个单元具有由开口框架4的几何形状与背板6和面对板8之间的间隔限定的预定体积。开口框架4可包括蜂窝结构，其中这些单元具有由开口框架4形成的六个壁，由背板6形成的底壁和由面对板8形成的顶壁。背板6对于空气可以是不可渗透的。更具体地，背板6可以是由支撑层或开口框架4支撑在开口框架4的与面对板8相对的一侧的无孔板。以这种方式，无孔板在开口框架4背侧并且闭合背侧的开口面。
面对板8可以被穿孔，使得在面对板8中形成预定模式的一组穿孔10，穿孔10形成入口，以允许空气进入所选择的单元9。面对板8可以由开口框架4支撑，使得穿孔10与开口框架4的开口面处于叠置关系，以形成配对的穿孔10和限定声学谐振器单元9的腔。穿孔板可以直接支撑在开口框架4上。替代地，可以利用插入层。面对板8可由任何合适的材料形成，包括但不限于复合材料。穿孔10的面积可以相同，或者可以在穿孔板的不同区域中改变面积。形成背板6和面对板8以及开口框架4以使得背板6和面对板8以及开口框架4中不存在缝隙。
单元9可形成声学谐振器的一部分。例如，穿孔10的面积和面对板8的厚度可以限定亥姆霍兹谐振器(Helmholtz resonators)的颈部，并且单元9的体积可以限定腔体积。可以调谐谐振器以衰减与进入声学谐振器的发动机声音相关的预定频率；调谐可以通过声学设计领域中实践者熟知的多个过程来完成。蜂窝单元9可以是六边形几何形状的单层或由多孔层隔开的相同或不同几何形状的多层，通常被识别为隔膜。另外，可以设想除六边形之外的替代几何形状，包括由开口单元泡沫或类似材料形成的随机尺寸的单元。
本文描述的方面包括在声学表皮中使用穿孔以及附着于表皮的气凝胶层。如本文所用，“气凝胶”或“聚酰亚胺气凝胶”可包括任何合适的气凝胶材料，其被配置，被选择或使其能够承受应用的操作环境，例如在燃气涡轮发动机中。
应该理解，声学面板可以用于各种环境中。图3示出了具有涡轮发动机12，风扇组件13和机舱14的飞行器发动机组件11的示例性环境。为了清楚起见，机舱14的一些部分已被切除。机舱14围绕涡轮发动机12，并且具有限定了向环境空气开放的入口19的入口区段17和通过飞行器发动机组件11的环形气流路径或环形旁路管道16，其限定箭头18示意性示出的大致从前到后的旁路气流路径。涡轮发动机12可具有包括环形风扇壳体23的风扇区段21和推力反向器(未示出)的后管道25。风扇区段21可以设置在机舱14内，其中风扇区段21与入口19流体连通。环形声学面板或者声学衬里100可以设置在机舱14的至少一部分内。作为非限制性示例，已经在入口19，风扇区段21和后管道25处示出了声学衬里。声学衬里100被构造成衰减飞行器发动机组件11中的噪声并且限定贯通空气流。
通常如上所述的声学衬里仅可容纳由飞行器发动机(如飞行器发动机组件11)产生的宽频带噪声的一部分。随着具有更大的、更慢的转向风扇13的更高旁通涡轮风扇发动机的出现，飞行器发动机组件11的声学特征趋向于较低的声音频率。这种飞行器发动机组件11产生宽频带噪声，包括多个频率峰值。这是在一个不断寻求改善飞行器和发动机性能(需要较低的重量，并且在发动机机舱的情况下，减小厚度以优化发动机安装并减小整体尺寸和导致的空气动力学阻力)的环境下进行的。
根据本公开的一个方面，图4示出了图3的环形声学衬里100的一部分的横截面视图。包括具有第一侧111和与第一侧111间隔开的第二侧112的支撑层110，并且支撑层110可包括任何合适的材料，例如铝，诺梅克斯(nomex)，玻璃纤维，耐腐蚀钢或热塑性塑料。一组分隔腔120在第一侧111和第二侧112之间延伸，并且腔120可以在第一侧111和第二侧112具有开口面122(在图5中更详细地示出)。
第一面对板130可以可操作地联接到支撑层110，使得第一面对板130覆盖并且闭合第一侧111的开口面122。第一组穿孔130包含在第一面对板130中并与分隔腔组120流体连通。第二面对板150可以可操作地联接到支撑层110，覆盖并且闭合第二侧112的开口面122。第二组穿孔152可以包含在第二面对板150中并与一组分隔腔120流体连通。可以想到，第一组穿孔132和第二组穿孔152中的任一个或两个可以与一组腔120相关联，使得可以为一组腔120中的每个腔提供穿孔132，152，如图所示。
诸如海绵，泡沫，凝胶或纤维织物的开口单元层160也可包含在声学衬里100中。开口单元层160可包括但不限于气凝胶层160，该气凝胶层如图所示在与支撑层110相对的一侧可操作地联接到第二面对板150。另外，金属表层162可以包含在气凝胶层160附近，以及膜164位于第二面对板130和气凝胶层160之间。膜164可以包括金属或非金属材料(包括网状物，穿孔材料或非刚性材料)，并且可以配置成声学上透明以及阻挡流体。结果是，声学衬里外产生的声音可穿过腔120和第二组穿孔152以进入气凝胶层，用于额外的噪声衰减。
如图5中更清楚地示出，这里示出的具有蜂窝状轮廓的分隔腔120可以由设置在第二面对板150和第一面对板130之间的开口框架121形成。分隔腔120各自具有由开口框架121的几何形状以及第二面对板150与第一面对板130之间的间隔所限定的预定体积。蜂窝状轮廓的分隔腔120可具有由开口框架121形成的六个壁，由第二面对板150形成的底壁和由第一面对板130形成的顶壁。
第一组穿孔132和第二组穿孔152可以以预定模式形成入口，以允许空气进入所选择的腔120以及进入气凝胶层160。该组穿孔132，152中的穿孔的面积或间距可以相同，或者可以在穿孔板的不同区域中改变面积；可以想到，第二组穿孔152中的穿孔可以具有比第一组穿孔132中的穿孔更大的横截面面积，并且进一步地，在两组穿孔132，152的非限制性实例中，一组穿孔132的几何轮廓可能不同于一组穿孔152的穿孔的几何轮廓，例如圆形，椭圆形，矩形或不规则形。还可以想到，由于第一组穿孔132和第二组穿孔152之间的不同，第二板150比第一板130具有更大的开口面积百分比。
腔120还可以形成声学谐振器的一部分，例如如上所述的亥姆霍兹谐振器，其中第一组穿孔132和第一面对板130形成较小的颈部，腔120的体积限定腔体积，第二组穿孔152和第二面对板150限定较大的颈部。在非限制性示例中，可以调谐谐振器以衰减与进入声学谐振器的发动机声音相关联的预定频率。这可能包括宽频带噪声，以及包括低于3000Hz的频率。气凝胶层160由于其大量的自由体积，刚性结构，大的表面积和低密度而可以进一步衰减噪声；作为非限制性示例，开口单元层160的自由体积(也称为开口单元含量，孔隙率，或空隙比)可以是80％或者更高。
声学衬里100的声音衰减特性可取决于气凝胶层厚度161；风扇组件13附近的环境中的频率可以与远离风扇组件13的那些频率不同，并且可以调节气凝胶层厚度161以根据声学衬里100放置的位置衰减各种声音频率。在非限制性示例中可以想到，声学衬里100可以具有高达2.0英寸的总厚度170，并且进一步地，气凝胶层160可以具有大约0.25至1.0英寸的厚度161；然而，本发明并不局限于此，并且在静止或海上应用中，总厚度170可以根据需要为几英寸厚。进一步设想，气凝胶层160的厚度161可以基于声学衬里100在飞行器发动机组件11内的位置而变化；例如，远离风扇组件13的声学衬里100的部分300可以具有减小的气凝胶层厚度161，如图3所示。另外，声音频率也可以在周向方向上变化，并且可以设想，环形声学衬里100可以在周向方向上具有变化的气凝胶层厚度161，以衰减飞行器发动机组件11周围的不同频率。例如，声学衬里100的第二部分200(图3)可以具有与部分300不同的声音衰减要求，即使两个部分200，300都定位在远离风扇13的相同轴向距离处。作为非限制性示例，部分200，300可以具有不同的声音衰减，因为第二部分200的层厚度161可能不同，或者气凝胶层160可包括不同材料类型或者密度的多层，其被设计用于根据需要在部分200、300中的部分衰减多个频率、最大限度地隔热，或提供环境或抗损坏性。
上述公开内容的各方面提供了多种益处，包括使用气凝胶可以在比使用传统制造材料(例如二氧化硅)目前可实现的更宽的频率范围内导致更低频率的衰减，以及为安装有声学面板100的部件提供隔热或防火屏障。另外，与不包括气凝胶的典型声学面板相比，来自气凝胶层160的改善的声音衰减可以允许单元高度的降低，因此可以在保持期望的声音衰减效果的同时减小总厚度170。可以理解，总厚度170的减小可以允许在声学衬里100的构造中使用更少的材料，同时减少衬里100的重量，从而提高发动机11的效率。进一步地，金属表层162可以防止液体(油或水)被吸收到声学衬里100中，这样的吸收可能改变衬里100的频率衰减特性或加速材料损坏。
在尚未描述的范围内，各种实施例的不同特征和结构可以根据需要彼此组合来使用。该一个特征可能未在所有实施例中示出，并且不意味着被解释为它可能不是，而是为了描述的简洁而完成。因此，无论是否明确地描述了新的实施例，可以根据需要混合和匹配不同实施例的各种特征以形成新的实施例。本公开内容涵盖本文描述的特征的所有组合或置换。
本书面描述使用示例来公开本发明，包括最佳模式，并且还使任何本领域技术人员能够实践本发明，包括制造和使用任何装置或系统以及执行任何结合的方法。本发明的可专利范围由权利要求限定，并且可包括本领域技术人员想到的其他示例。如果这些其他示例具有与权利要求的字面语言没有不同的结构元件，或者如果它们包括与权利要求的字面语言无实质差别的等效结构元件，则这些其他示例意图在权利要求的范围内。

Claims (20)

1.一种声学衬里，其特征在于，包括：
支撑层，所述支撑层具有第一侧和间隔开的第二侧，并且所述支撑层包含在所述第一侧和所述第二侧之间延伸的一组分隔腔，并且所述一组分隔腔具有开口面；
第一面对板，所述第一面对板可操作地联接到所述支撑层，使得所述第一面对板覆盖并且闭合所述第一侧的所述开口面，其中一组穿孔包含在所述第一面对板中，并且与包含在所述一组分隔腔中的腔流体连通，以形成一组声学谐振器；
第二面对板，所述第二面对板可操作地联接到所述支撑层，使得所述第二面对板覆盖并且闭合所述第二侧的所述开口面，其中一组穿孔包含在所述第二面对板中，并且与包含在所述一组分隔腔中的腔流体连通；以及
气凝胶层，所述气凝胶层在所述第二面对板的与所述支撑层相对的一侧可操作地联接到所述第二面对板。
2.根据权利要求1所述的声学衬里，其特征在于，其中所述第二面对板中的所述一组穿孔与用于所述一组分隔腔中的每个腔的穿孔相关。
3.根据权利要求1所述的声学衬里，其特征在于，其中所述气凝胶层被构造成衰减频率低于3000Hz的噪声。
4.根据权利要求1所述的声学衬里，其特征在于，其中所述第二面对板中的所述一组穿孔具有比所述第一面对板中的所述一组穿孔更大的横截面面积。
5.根据权利要求1所述的声学衬里，其特征在于，其中所述支撑层至少部分地由铝蜂窝芯形成。
6.根据权利要求1所述的声学衬里，其特征在于，其中所述声学衬里的总厚度等于或小于2.0英寸。
7.根据权利要求1所述的声学衬里，其特征在于，进一步包括与所述气凝胶层相邻的金属表层。
8.根据权利要求1所述的声学衬里，其特征在于，进一步包括位于所述第二面对板和所述气凝胶层之间的膜，并且所述膜被构造成声学上透明的。
9.根据权利要求8所述的声学衬里，其特征在于，其中所述膜进一步被构造成阻挡流体。
10.根据权利要求1所述的声学衬里，其特征在于，其中所述气凝胶层包括不同的厚度。
11.根据权利要求1所述的声学衬里，其特征在于，其中所述第一面对板或所述第二面对板中的至少一个包括复合表皮。
12.一种飞行器发动机组件，其特征在于，包括：
飞行器发动机；
机舱，所述机舱被构造成围绕所述飞行器发动机并且具有限定对周围空气开放的入口的入口区段，并且所述机舱至少部分地限定通过所述飞行器发动机组件的环形气流路径；以及
至少一个声学面板，所述至少一个声学面板可操作地联接到所述飞行器发动机或所述机舱中的至少一个，所述至少一个声学面板包括：
支撑层，所述支撑层具有第一侧和间隔开的第二侧，并且所述支撑层包括在所述第一侧和所述第二侧之间延伸的一组分隔腔，并且所述一组分隔腔具有开口面；
第一面对板，所述第一面对板可操作地联接到所述支撑层，使得所述第一面对板覆盖并且闭合所述第一侧的所述开口面，其中一组穿孔包含在所述第一面对板中，并且与包含在所述一组分隔腔中的腔流体连通，以形成一组声学谐振器；
第二面对板，所述第二面对板可操作地联接到所述支撑层，使得所述第二面对板覆盖并且闭合所述第二侧的所述开口面，其中一组穿孔包含在所述第二面对板中，并且与包含在所述一组分隔腔中的腔流体连通；以及
气凝胶层，所述气凝胶层在所述第二面对板的与所述支撑层相对的一侧可操作地联接到所述第二面对板；
其中，所述第一面对板与所述环形气流路径续接。
13.根据权利要求12所述的飞行器发动机组件，其特征在于，其中，所述至少一个声学面板可操作地联接到所述飞行器发动机，并且进一步包括与所述气凝胶层相邻的金属表层。
14.根据权利要求12所述的飞行器发动机组件，其特征在于，其中，所述第二面对板中的所述一组穿孔具有比所述第一面对板中的所述一组穿孔更大的横截面面积。
15.根据权利要求12所述的飞行器发动机组件，其特征在于，其中所述声学面板的总厚度等于或小于2.0英寸。
16.根据权利要求12所述的飞行器发动机组件，其特征在于，进一步包括位于所述第二面对板和所述气凝胶层之间的膜，并且所述膜被构造成声学上透明的并且被构造成阻挡流体。
17.根据权利要求12所述的飞行器发动机组件，其特征在于，其中所述气凝胶层包括沿着所述环形气流路径的长度的至少一部分的不同的厚度。
18.根据权利要求17所述的飞行器发动机组件，其特征在于，其中所述气凝胶层在与所述飞行器发动机的风扇区段相邻处厚度增加。
19.一种声学衬里，其特征在于，包括：
支撑层，所述支撑层具有第一侧和间隔开的第二侧，并且所述支撑层包括在所述第一侧和所述第二侧之间延伸的一组分隔腔，并且所述一组分隔腔具有开口面；
第一面对板，所述第一面对板可操作地联接到所述支撑层，使得所述第一面对板覆盖并且闭合所述第一侧的所述开口面，其中一组穿孔包含在所述第一面对板中，并且与包含在所述一组分隔腔中的腔流体连通，以形成一组声学谐振器；
第二面对板，所述第二面对板可操作地联接到所述支撑层，使得所述第二面对板覆盖并且闭合所述第二侧的所述开口面，其中一组穿孔包含在所述第二面对板中，并且与包含在所述一组分隔腔中的腔流体连通；以及
开口单元层，所述开口单元层在与所述支撑层相对的一侧可操作地联接到所述第二面对板，并且所述开口单元层是海绵，织物，泡沫或凝胶中的一种。
20.根据权利要求19所述的声学衬里，其特征在于，其中所述开口单元层的自由体积是80％或者更高。
CN201880012855.2A 2017-02-24 2018-01-16 多层声学衬里 Pending CN110313030A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15/442,158 US10876479B2 (en) 2017-02-24 2017-02-24 Acoustic liner having multiple layers
US15/442,158 2017-02-24
PCT/US2018/013762 WO2018169599A2 (en) 2017-02-24 2018-01-16 Acoustic liner having multiple layers

Publications (1)

Publication Number Publication Date
CN110313030A true CN110313030A (zh) 2019-10-08

Family

ID=63246684

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880012855.2A Pending CN110313030A (zh) 2017-02-24 2018-01-16 多层声学衬里

Country Status (3)

Country Link
US (1) US10876479B2 (zh)
CN (1) CN110313030A (zh)
WO (1) WO2018169599A2 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114439557A (zh) * 2020-11-06 2022-05-06 通用电气公司 用于热发动机的声学衬里
CN114787908A (zh) * 2019-11-29 2022-07-22 赛峰航空器发动机 谐振补片和设置有这种补片的声学处理单元

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016101168A1 (de) * 2016-01-22 2017-07-27 Rolls-Royce Deutschland Ltd & Co Kg Strömungsmaschine mit einer in einer Ausnehmung einer Wandung anordenbaren Einsetzeinrichtung
JP6292339B1 (ja) * 2016-12-25 2018-03-14 株式会社 静科 吸音パネル
US20180347585A1 (en) * 2017-06-01 2018-12-06 Rolls-Royce Corporation Fan track liner assembly
JP7172457B2 (ja) * 2018-11-05 2022-11-16 ヤマハ株式会社 吸音用ユニットおよび吸音構造体
JP7310120B2 (ja) 2018-11-05 2023-07-19 ヤマハ株式会社 吸音構造体
CN113646541B (zh) * 2019-04-24 2024-03-26 富士胶片株式会社 风扇消音系统
FR3095674B1 (fr) * 2019-05-03 2021-04-16 Safran Aircraft Engines Grille d’inverseur de poussée incluant un traitement acoustique
FR3101723B1 (fr) * 2019-10-08 2022-07-22 Safran Nacelles Panneau d’atténuation acoustique pour onde basses fréquences
CN111105774A (zh) * 2019-10-29 2020-05-05 同济大学 亥姆霍兹共振器及基于其的低频宽带吸声降噪结构
US11199107B2 (en) * 2020-04-13 2021-12-14 Raytheon Technologies Corporation Airfoil-mounted resonator
CN113496693B (zh) * 2021-07-05 2022-09-09 上海交通大学 一种具有显著压致宽带化特点的吸声结构
US20230167774A1 (en) * 2021-12-01 2023-06-01 Rohr, Inc. Attachment ring insulator systems, methods, and assemblies
EP4261034A1 (en) * 2022-04-12 2023-10-18 Volvo Truck Corporation Sound absorbent device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030156940A1 (en) * 2002-02-15 2003-08-21 General Electric Company Fan casing acoustic treatment
US20090250293A1 (en) * 2008-04-04 2009-10-08 Airbus Deutschland Gmbh Acoustically optimized cabin wall element
WO2014111068A2 (en) * 2013-01-18 2014-07-24 Technicka Univerzita V Liberci A sound absorbing means containing at least one cavity resonator
US20150344142A1 (en) * 2014-06-02 2015-12-03 Mra Systems, Inc. Acoustically attenuating sandwich panel constructions
DE102014214346A1 (de) * 2014-07-23 2016-01-28 BSH Hausgeräte GmbH Haushaltsgerät
CN105719634A (zh) * 2014-12-04 2016-06-29 北京市劳动保护科学研究所 宽带复合吸声结构
CN105821980A (zh) * 2016-03-23 2016-08-03 西安交通大学 一种六边形蜂窝波纹复合结构吸声承载板
WO2016144331A1 (en) * 2015-03-10 2016-09-15 Middle River Aircraft Systems Acoustic liners for use in a turbine engine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4235303A (en) * 1978-11-20 1980-11-25 The Boeing Company Combination bulk absorber-honeycomb acoustic panels
US4421811A (en) * 1979-12-21 1983-12-20 Rohr Industries, Inc. Method of manufacturing double layer attenuation panel with two layers of linear type material
US5782082A (en) * 1996-06-13 1998-07-21 The Boeing Company Aircraft engine acoustic liner
US5973015A (en) 1998-02-02 1999-10-26 The Regents Of The University Of California Flexible aerogel composite for mechanical stability and process of fabrication
US20030134916A1 (en) 2002-01-15 2003-07-17 The Regents Of The University Of California Lightweight, high strength carbon aerogel composites and method of fabrication
US20050076644A1 (en) * 2003-10-08 2005-04-14 Hardwicke Canan Uslu Quiet combustor for a gas turbine engine
US8461223B2 (en) 2005-04-07 2013-06-11 Aspen Aerogels, Inc. Microporous polycyclopentadiene-based aerogels
US7781492B2 (en) 2006-06-08 2010-08-24 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Foam/aerogel composite materials for thermal and acoustic insulation and cryogen storage
JP2009062977A (ja) * 2007-08-15 2009-03-26 Rohr Inc 線形音響ライナー
FR2953058B1 (fr) * 2009-11-23 2017-11-03 Aircelle Sa Peau acoustique pour un panneau acoustique d'une nacelle d'aeronef
US8765230B1 (en) 2009-12-01 2014-07-01 The Boeing Company Thermal barrier coated RF radomes and method
US20120308369A1 (en) 2011-05-31 2012-12-06 Mra Systems, Inc. Laminate thermal insulation blanket for aircraft applications and process therefor
KR101485784B1 (ko) 2013-07-24 2015-01-26 주식회사 지오스에어로젤 단열 및 방음 기능 향상을 위한 에어로겔이 포함된 단열성 조성물 및 이를 이용한 단열원단의 제조방법
KR101684504B1 (ko) 2014-09-22 2016-12-20 현대자동차 주식회사 엔진 방사 소음 저감유닛
CN106005445A (zh) 2016-07-27 2016-10-12 中国航空工业集团公司西安飞机设计研究所 一种发动机结构及具有其的飞机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030156940A1 (en) * 2002-02-15 2003-08-21 General Electric Company Fan casing acoustic treatment
US20090250293A1 (en) * 2008-04-04 2009-10-08 Airbus Deutschland Gmbh Acoustically optimized cabin wall element
WO2014111068A2 (en) * 2013-01-18 2014-07-24 Technicka Univerzita V Liberci A sound absorbing means containing at least one cavity resonator
US20150344142A1 (en) * 2014-06-02 2015-12-03 Mra Systems, Inc. Acoustically attenuating sandwich panel constructions
DE102014214346A1 (de) * 2014-07-23 2016-01-28 BSH Hausgeräte GmbH Haushaltsgerät
CN105719634A (zh) * 2014-12-04 2016-06-29 北京市劳动保护科学研究所 宽带复合吸声结构
WO2016144331A1 (en) * 2015-03-10 2016-09-15 Middle River Aircraft Systems Acoustic liners for use in a turbine engine
CN105821980A (zh) * 2016-03-23 2016-08-03 西安交通大学 一种六边形蜂窝波纹复合结构吸声承载板

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114787908A (zh) * 2019-11-29 2022-07-22 赛峰航空器发动机 谐振补片和设置有这种补片的声学处理单元
CN114787908B (zh) * 2019-11-29 2023-09-15 赛峰航空器发动机 谐振补片和设置有这种补片的声学处理单元
CN114439557A (zh) * 2020-11-06 2022-05-06 通用电气公司 用于热发动机的声学衬里

Also Published As

Publication number Publication date
US10876479B2 (en) 2020-12-29
US20180245515A1 (en) 2018-08-30
WO2018169599A3 (en) 2018-12-06
WO2018169599A2 (en) 2018-09-20

Similar Documents

Publication Publication Date Title
CN110313030A (zh) 多层声学衬里
JP6634454B2 (ja) タービンエンジンにおける使用のための音響ライナ
US6182787B1 (en) Rigid sandwich panel acoustic treatment
CN110312853A (zh) 声学衬里和形成声学衬里的方法
EP3033746B1 (en) Sound wave guide for use in acoustic structures
EP3450738B1 (en) Acoustic liner having internal structure
JP6495280B2 (ja) 内部隔壁を有するハニカムを備えた雑音吸収構造体
US9500131B2 (en) Sound-damping arrangement for an engine nacelle and engine nacelle comprising such an arrangement
US10280839B2 (en) Acoustic treatment panel
US11745887B2 (en) Multifrequency absorption acoustic panel for an aircraft nacelle
US6672424B2 (en) Acoustically treated turbomachine multi-duct exhaust device
US20090173572A1 (en) Sandwich panel for sound absorption
RU2352798C1 (ru) Турбовентиляторный двигатель
RU2277178C2 (ru) Устройство шумоглушения в турбореактивном двухконтурном двигателе
CN110364136A (zh) 具有声学衰减特性组合的用于航天器的声音衰减面板

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination