SE0201790D0 - An acoustic liner - Google Patents

An acoustic liner

Info

Publication number
SE0201790D0
SE0201790D0 SE0201790A SE0201790A SE0201790D0 SE 0201790 D0 SE0201790 D0 SE 0201790D0 SE 0201790 A SE0201790 A SE 0201790A SE 0201790 A SE0201790 A SE 0201790A SE 0201790 D0 SE0201790 D0 SE 0201790D0
Authority
SE
Sweden
Prior art keywords
acoustic liner
liner
top sheet
relates
acoustic
Prior art date
Application number
SE0201790A
Other languages
Swedish (sv)
Other versions
SE525812C2 (en
SE0201790L (en
Inventor
Sohan Sarin
Pontus Nordin
Original Assignee
Saab Ab
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 Saab Ab filed Critical Saab Ab
Priority to SE0201790A priority Critical patent/SE525812C2/en
Publication of SE0201790D0 publication Critical patent/SE0201790D0/en
Priority to US10/517,495 priority patent/US20060060421A1/en
Priority to AU2003230494A priority patent/AU2003230494A1/en
Priority to PCT/SE2003/000670 priority patent/WO2003106263A1/en
Priority to EP03723564A priority patent/EP1515888A1/en
Publication of SE0201790L publication Critical patent/SE0201790L/en
Publication of SE525812C2 publication Critical patent/SE525812C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F02K1/827—Sound absorbing structures or liners
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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

Abstract

The present invention relates to an acoustic liner ( 1 ) arranged to attenuate sound. The acoustic liner ( 1 ) comprises a top sheet ( 5 ) having substantially linear characteristics and a liner core ( 2 ) or cavity. The top sheet ( 5 ) comprises a layer ( 3 ) of a metallic foam. The invention also relates to the use of said acoustic liner in a hot stream environment such as the outlet of an aircraft engine, and to the manufacture of an acoustic liner.
SE0201790A 2002-06-12 2002-06-12 Acoustic lining, use of a lining and ways of producing an acoustic lining SE525812C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE0201790A SE525812C2 (en) 2002-06-12 2002-06-12 Acoustic lining, use of a lining and ways of producing an acoustic lining
US10/517,495 US20060060421A1 (en) 2002-06-12 2003-04-25 Acoustic liner use of such a liner and method for manufacturing an acoustic liner
AU2003230494A AU2003230494A1 (en) 2002-06-12 2003-04-25 An acoustic liner, use of such a liner and method for manufacturing an acoustic liner
PCT/SE2003/000670 WO2003106263A1 (en) 2002-06-12 2003-04-25 An acoustic liner, use of such a liner and method for manufacturing an acoustic liner
EP03723564A EP1515888A1 (en) 2002-06-12 2003-04-25 An acoustic liner, use of such a liner and method for manufacturing an acoustic liner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0201790A SE525812C2 (en) 2002-06-12 2002-06-12 Acoustic lining, use of a lining and ways of producing an acoustic lining

Publications (3)

Publication Number Publication Date
SE0201790D0 true SE0201790D0 (en) 2002-06-12
SE0201790L SE0201790L (en) 2003-12-13
SE525812C2 SE525812C2 (en) 2005-05-03

Family

ID=20288160

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0201790A SE525812C2 (en) 2002-06-12 2002-06-12 Acoustic lining, use of a lining and ways of producing an acoustic lining

Country Status (5)

Country Link
US (1) US20060060421A1 (en)
EP (1) EP1515888A1 (en)
AU (1) AU2003230494A1 (en)
SE (1) SE525812C2 (en)
WO (1) WO2003106263A1 (en)

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FR2865309B1 (en) * 2004-01-15 2006-09-08 Hurel Hispano PERFORATED SKIN FOR ACOUSTIC ELEMENT, ACOUSTIC ELEMENT AND METHOD OF MANUFACTURE
US20060169532A1 (en) * 2005-02-03 2006-08-03 Patrick William P Acoustic liner with nonuniform impedance
US20060169533A1 (en) * 2005-02-03 2006-08-03 Patrick William P Acoustic liner with a nonuniform depth backwall
DE102006049826A1 (en) * 2006-10-23 2008-04-24 Robert Bosch Gmbh Protection device, especially for hand-held machine tool, has disk-shaped rotary tool and base body on which is arranged energy absorption element
FR2925208B1 (en) 2007-12-14 2016-07-01 Eurocopter France ABSORBENT STRUCTURE FOR ATTENUATING NOISE GENERATED IN PARTICULAR BY A ROTOR AND FAIRING COMPRISING SUCH A STRUCTURE
DE102008017357B4 (en) * 2008-04-04 2014-01-16 Airbus Operations Gmbh Acoustically optimized cabin wall element and its use
US9938931B2 (en) 2008-12-23 2018-04-10 General Electric Company Combined surface cooler and acoustic absorber for turbomachines
DE102008037143A1 (en) * 2008-08-08 2010-02-11 Airbus Deutschland Gmbh Insulation structure for thermal and acoustic insulation of an aircraft
TWI651455B (en) * 2009-01-14 2019-02-21 Kuraray Co., Ltd Sound insulation board, sound insulation structure and sound insulation method
US7913813B1 (en) * 2009-10-21 2011-03-29 The Boeing Company Noise shield for a launch vehicle
JP5650429B2 (en) * 2010-04-06 2015-01-07 株式会社荏原製作所 Rotating electric machine
US8047329B1 (en) * 2010-08-13 2011-11-01 Rohr, Inc. System and method for noise suppression
JP5693293B2 (en) * 2011-02-25 2015-04-01 三菱重工業株式会社 Combustor
US9200537B2 (en) * 2011-11-09 2015-12-01 Pratt & Whitney Canada Corp. Gas turbine exhaust case with acoustic panels
US10336433B2 (en) * 2015-03-09 2019-07-02 The Boeing Company Fused porogen process for acoustic septa fabrication
US10323325B2 (en) 2016-04-12 2019-06-18 United Technologies Corporation Light weight housing for internal component and method of making
US10399117B2 (en) 2016-04-12 2019-09-03 United Technologies Corporation Method of making light weight component with internal metallic foam and polymer reinforcement
US10619949B2 (en) 2016-04-12 2020-04-14 United Technologies Corporation Light weight housing for internal component with integrated thermal management features and method of making
US10335850B2 (en) 2016-04-12 2019-07-02 United Technologies Corporation Light weight housing for internal component and method of making
US10724131B2 (en) 2016-04-12 2020-07-28 United Technologies Corporation Light weight component and method of making
US10302017B2 (en) * 2016-04-12 2019-05-28 United Technologies Corporation Light weight component with acoustic attenuation and method of making
CN112069657B (en) * 2020-08-13 2024-03-12 株洲时代新材料科技股份有限公司 Pipeline acoustic liner design method and pipeline acoustic liner suitable for air flow environment
CN114321024B (en) * 2021-12-31 2024-03-26 广东美的白色家电技术创新中心有限公司 Control method and control device of noise reduction device, storage medium and noise reduction device

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US4300978A (en) * 1979-07-06 1981-11-17 Rohr Industries, Inc. Bonding tool for venting honeycomb noise attenuation structure during manufacture
US4291080A (en) * 1980-03-31 1981-09-22 Vought Corporation Sound attenuating structural panel
US4433021A (en) * 1982-09-22 1984-02-21 Rohr Industries, Inc. Sound attenuation sandwich panel including barrier material for corrosion control
US4817756A (en) * 1985-08-26 1989-04-04 Aeronautic Development Corp. Ltd. Quiet nacelle system and hush kit
US4828932A (en) * 1986-05-12 1989-05-09 Unix Corporation Ltd. Porous metallic material, porous structural material and porous decorative sound absorbing material, and methods for manufacturing the same
DE8700264U1 (en) * 1987-01-07 1988-05-11 Irbit Research + Consulting Ag, Freiburg/Fribourg, Ch
GB9101355D0 (en) * 1991-01-22 1991-03-06 Short Brothers Plc Noise attentuation panel
US5175401A (en) * 1991-03-18 1992-12-29 Grumman Aerospace Corporation Segmented resistance acoustic attenuating liner
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US5766395A (en) * 1995-08-28 1998-06-16 Johns Manville International, Inc. Method of making self-supporting composite structures
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US6209680B1 (en) * 2000-04-10 2001-04-03 Jay Perdue Acoustic diffuser panels and wall assembly comprised thereof
US20050067218A1 (en) * 2001-11-21 2005-03-31 Dunlop Aerospace Limited Noise attenuator arrangement
US7017706B2 (en) * 2001-12-21 2006-03-28 Honeywell International, Inc. Turbine noise absorber
GB0223697D0 (en) * 2002-10-14 2002-11-20 Rolls Royce Plc Acoustic liner for gas turbine engineers

Also Published As

Publication number Publication date
WO2003106263A1 (en) 2003-12-24
EP1515888A1 (en) 2005-03-23
US20060060421A1 (en) 2006-03-23
SE525812C2 (en) 2005-05-03
AU2003230494A1 (en) 2003-12-31
SE0201790L (en) 2003-12-13
WO2003106263A8 (en) 2005-03-10

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Legal Events

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