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GB2256395B - Noise attenuation panel - Google Patents

Noise attenuation panel

Info

Publication number
GB2256395B
GB2256395B GB9211223A GB9211223A GB2256395B GB 2256395 B GB2256395 B GB 2256395B GB 9211223 A GB9211223 A GB 9211223A GB 9211223 A GB9211223 A GB 9211223A GB 2256395 B GB2256395 B GB 2256395B
Authority
GB
United Kingdom
Prior art keywords
noise attenuation
attenuation panel
panel
noise
attenuation
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.)
Expired - Fee Related
Application number
GB9211223A
Other versions
GB9211223D0 (en
GB2256395A (en
Inventor
Robert Samual Wilson
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.)
Short Brothers PLC
Original Assignee
Short Brothers PLC
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 Short Brothers PLC filed Critical Short Brothers PLC
Publication of GB9211223D0 publication Critical patent/GB9211223D0/en
Publication of GB2256395A publication Critical patent/GB2256395A/en
Application granted granted Critical
Publication of GB2256395B publication Critical patent/GB2256395B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G10K11/162—Selection of materials
    • G10K11/165—Particles in a matrix
    • 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
    • B32B15/043—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 metal
    • 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
    • B32B15/08—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 synthetic resin
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
    • 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
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/026—Porous
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • 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
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • 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
    • B32B2371/00—Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone
    • 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
    • B32B2607/00—Walls, panels

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Casings For Electric Apparatus (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Connection Or Junction Boxes (AREA)
GB9211223A 1991-05-30 1992-05-27 Noise attenuation panel Expired - Fee Related GB2256395B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919111621A GB9111621D0 (en) 1991-05-30 1991-05-30 Noise attenuation panel

Publications (3)

Publication Number Publication Date
GB9211223D0 GB9211223D0 (en) 1992-07-08
GB2256395A GB2256395A (en) 1992-12-09
GB2256395B true GB2256395B (en) 1995-07-05

Family

ID=10695801

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919111621A Pending GB9111621D0 (en) 1991-05-30 1991-05-30 Noise attenuation panel
GB9211223A Expired - Fee Related GB2256395B (en) 1991-05-30 1992-05-27 Noise attenuation panel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919111621A Pending GB9111621D0 (en) 1991-05-30 1991-05-30 Noise attenuation panel

Country Status (8)

Country Link
EP (1) EP0586452A1 (en)
JP (1) JPH06508935A (en)
AU (1) AU1762592A (en)
BR (1) BR9205581A (en)
CA (1) CA2095919A1 (en)
GB (2) GB9111621D0 (en)
IL (1) IL102049A0 (en)
WO (1) WO1992022053A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12428165B2 (en) 2023-06-05 2025-09-30 Rohr, Inc. Nacelle inlet structure with foam core

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2739888B2 (en) * 1994-10-24 1998-04-15 正幸 今井 Oxygen concentrator
FR2775216B1 (en) * 1998-02-26 2000-07-13 Snecma SOUNDPROOFING PANEL AND METHOD FOR PRODUCING THE SAME
GB0119608D0 (en) * 2001-08-11 2001-10-03 Rolls Royce Plc A guide vane assembly
JP4754836B2 (en) * 2005-01-27 2011-08-24 株式会社神戸製鋼所 Double wall structure
US7434659B2 (en) * 2005-04-04 2008-10-14 Hexcel Corporation Acoustic septum cap honeycomb
US8834667B2 (en) 2010-10-19 2014-09-16 The Boeing Company Method for joining sandwich truss core panels and composite structures produced therefrom
US8815038B2 (en) 2008-10-01 2014-08-26 The Boeing Company Joining curved composite sandwich panels
US8607924B2 (en) * 2011-09-08 2013-12-17 Hexcel Corporation Anchoring of septums in acoustic honeycomb
US8651233B2 (en) 2012-05-08 2014-02-18 Hexcel Corporation Acoustic structure with increased bandwidth suppression
GB2512869B (en) * 2013-04-09 2021-07-21 Upm Kymmene Corp A composite having acoustic properties, manufacturing the composite, a component comprising a composite, manufacturing the component and uses thereof
GB2539228B (en) * 2015-06-10 2017-07-26 Fergusson's Advanced Composite Tech Ltd A method of making a composite structure
WO2021116889A1 (en) * 2019-12-12 2021-06-17 3M Innovative Properties Company Methods of making dual layer sound-absorbing panels comprising a core consisting of connected cells, wherein some of the cell walls have openings
WO2021116888A1 (en) * 2019-12-12 2021-06-17 3M Innovative Properties Company Dual layer sound-absorbing panels comprising a core consisting of connected cells, wherein some of the cell walls have openings
EP4144649A1 (en) * 2021-09-07 2023-03-08 Lilium eAircraft GmbH Shrouded fan engine comprising an acoustic liner
EP4411726A1 (en) * 2023-01-31 2024-08-07 Airbus SAS Honeycomb structure of an acoustic attenuation panel comprising at least one partition configured to vibrate at a desired frequency, method for producing said honeycomb structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5073734A (en) * 1973-11-05 1975-06-18
GB2064988A (en) * 1979-11-19 1981-06-24 Gadde V Sound-damping mat or drape and method of manufacture thereof
EP0428991A2 (en) * 1989-11-21 1991-05-29 PETOCA Ltd. Composite material of carbon fibers and method for producing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981360A (en) * 1954-02-18 1961-04-25 Bayer Ag Sound-absorbing systems
US3821999A (en) * 1972-09-05 1974-07-02 Mc Donnell Douglas Corp Acoustic liner
JPS57178855A (en) * 1981-04-30 1982-11-04 Nissan Motor Acoustic board
GB2130963B (en) * 1982-11-30 1986-03-19 Rolls Royce Manufacturing damped resonator acoustical panel
FR2562699B1 (en) * 1984-04-09 1986-12-05 Alsthom Atlantique ACOUSTIC WAVE ABSORBING COATING
GB8817669D0 (en) * 1988-07-25 1988-09-01 Short Brothers Ltd Means for attenuating sound energy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5073734A (en) * 1973-11-05 1975-06-18
GB2064988A (en) * 1979-11-19 1981-06-24 Gadde V Sound-damping mat or drape and method of manufacture thereof
EP0428991A2 (en) * 1989-11-21 1991-05-29 PETOCA Ltd. Composite material of carbon fibers and method for producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12428165B2 (en) 2023-06-05 2025-09-30 Rohr, Inc. Nacelle inlet structure with foam core

Also Published As

Publication number Publication date
BR9205581A (en) 1994-09-27
WO1992022053A1 (en) 1992-12-10
GB9211223D0 (en) 1992-07-08
AU1762592A (en) 1993-01-08
JPH06508935A (en) 1994-10-06
IL102049A0 (en) 1992-12-30
GB2256395A (en) 1992-12-09
EP0586452A1 (en) 1994-03-16
GB9111621D0 (en) 1991-07-24
CA2095919A1 (en) 1992-12-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000527