EP0935235A3 - Sandwich-type wall - Google Patents
Sandwich-type wall Download PDFInfo
- Publication number
- EP0935235A3 EP0935235A3 EP99102139A EP99102139A EP0935235A3 EP 0935235 A3 EP0935235 A3 EP 0935235A3 EP 99102139 A EP99102139 A EP 99102139A EP 99102139 A EP99102139 A EP 99102139A EP 0935235 A3 EP0935235 A3 EP 0935235A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiber composite
- sandwich
- type wall
- cover skin
- absorbing
- 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.)
- Ceased
Links
Classifications
-
- 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
Abstract
Eine Sandwichwand (2), insbesondere für eine Hubschrauberzelle, bestehend aus einer oberen und einer unteren Deckhaut (8, 10) aus Faserverbundwerkstoff und einem zwischen diesen angeordneten, aus aufrecht stehenden Hohlkörpern (4) bestehenden Innen-, insbesondere Wabenkern (6) ist erfindungsgemäß in gewichtssparender und herstellungsmäßig einfacher Weise dadurch schallabsorbierend ausgebildet, daß die der Hauptschallquelle (H) zugewandte Deckhaut (8) aus einem offenmaschigen, mit einer flexiblen Deckfolie (16) belegten Faserverbundnetz (12) mit einer Kleineren Maschengröße als der Hohlkörper-Innenquerschnitt besteht. A sandwich wall (2), in particular for a helicopter cell, consisting of an upper and a lower cover skin (8, 10) made of fiber composite material and an inner, in particular honeycomb core (6) consisting of upright hollow bodies (4) arranged between them Sound-absorbing in a weight-saving and simple manner in terms of production in that the cover skin (8) facing the main sound source (H) consists of an open-meshed fiber composite network (12) covered with a flexible cover film (16) with a smaller mesh size than the hollow body internal cross-section.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19804718 | 1998-02-06 | ||
DE19804718A DE19804718C2 (en) | 1998-02-06 | 1998-02-06 | Sound absorbing sandwich wall |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0935235A2 EP0935235A2 (en) | 1999-08-11 |
EP0935235A3 true EP0935235A3 (en) | 2001-11-14 |
Family
ID=7856838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99102139A Ceased EP0935235A3 (en) | 1998-02-06 | 1999-02-03 | Sandwich-type wall |
Country Status (3)
Country | Link |
---|---|
US (1) | US6179086B1 (en) |
EP (1) | EP0935235A3 (en) |
DE (1) | DE19804718C2 (en) |
Families Citing this family (100)
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JP4278677B2 (en) * | 2006-11-30 | 2009-06-17 | 株式会社ジャムコ | Sandwich panel |
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DE102007060668A1 (en) | 2007-12-17 | 2009-06-18 | Airbus Deutschland Gmbh | Sandwich panel for sound absorption |
DE102007060662B4 (en) | 2007-12-17 | 2014-07-24 | Airbus Operations Gmbh | Flugzeugkabinenpaneel |
US8079443B2 (en) * | 2008-01-07 | 2011-12-20 | Pelzer Acoustic Products Gmbh | Aircraft trim panel with integrated adjustable acoustic properties |
US8056850B2 (en) * | 2008-01-18 | 2011-11-15 | The Boeing Company | Particle-filled wing-to-body fairing and method for reducing fairing vibrations |
US8292214B2 (en) * | 2008-01-18 | 2012-10-23 | The Boeing Company | Vibration damping for wing-to-body aircraft fairing |
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CN102089801B (en) * | 2008-05-22 | 2013-05-29 | 3M创新有限公司 | Multilayer sound absorbing structure comprising mesh layer |
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BRPI1015191A2 (en) | 2009-06-24 | 2017-06-13 | Zephyros Inc | honeycomb insulation panel |
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CN102597477B (en) * | 2009-09-17 | 2015-12-16 | 沃尔沃航空公司 | Noise reduction panel and the gas turbine engine component comprising noise reduction panel |
DE102010015638B4 (en) | 2010-04-20 | 2015-02-12 | Airbus Operations Gmbh | Aircraft cabin plate absorber |
US8156710B1 (en) * | 2010-11-19 | 2012-04-17 | Advance Vinyl Floor Manufacturing Corp. | Method and apparatus for floor tiles and planks |
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DE102010051583A1 (en) * | 2010-11-05 | 2012-05-10 | Progress-Werk Oberkirch Ag | Sound-absorbing shield element used in motor vehicle e.g. car, has acoustic effect micro-perforated films that are arranged on portion of porous absorbing layer |
JP5206818B2 (en) * | 2011-02-14 | 2013-06-12 | トヨタ自動車株式会社 | Sound absorbing structure for vehicle |
DE202011005339U1 (en) * | 2011-03-30 | 2012-07-04 | Mta Ohg | Lightweight molded part |
DE102011007856A1 (en) * | 2011-04-21 | 2012-10-25 | J. Eberspächer GmbH & Co. KG | silencer |
EP2718180B1 (en) | 2011-06-07 | 2018-02-28 | Composite Helicopters International Holdings Limited | A helicopter |
EP2583823A1 (en) | 2011-10-20 | 2013-04-24 | Eurocopter Deutschland GmbH | Sound attenuating airframe from an air vehicle |
PT2771180T (en) * | 2011-10-28 | 2016-08-05 | Iseli Alfred | Method for manufacturing ultralight cardboard structures having substantial mechanical stability |
EP2610052A1 (en) * | 2011-12-30 | 2013-07-03 | AGUSTAWESTLAND S.p.A. | Aircraft interior trim panel, and aircraft fitted with such panels |
US8511429B1 (en) | 2012-02-13 | 2013-08-20 | Usg Interiors, Llc | Ceiling panels made from corrugated cardboard |
US9321241B2 (en) * | 2012-05-11 | 2016-04-26 | The Boeing Company | Ventilated aero-structures, aircraft and associated methods |
EP2674091A1 (en) | 2012-06-13 | 2013-12-18 | Nitto Europe N.V | Honeycomb-based high temperature structural damper |
WO2014197035A2 (en) | 2013-03-15 | 2014-12-11 | United Technologies Corporation | Acoustic liner with varied properties |
US8800245B1 (en) | 2013-03-27 | 2014-08-12 | Advancecd Vinyl Floor Manufacturing Corp. | Method and apparatus for floor tiles and planks |
EP2830042A1 (en) | 2013-07-26 | 2015-01-28 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | Sandwich type load bearing panel |
AU2015252769A1 (en) * | 2014-05-02 | 2016-12-22 | Ashmere Holdings Pty Ltd | Acoustic absorption and methods of manufacture |
GB2531808A (en) | 2014-11-03 | 2016-05-04 | Short Brothers Plc | Methods and precursors for manufacturing a perforated composite part |
CN105788587A (en) * | 2014-12-24 | 2016-07-20 | 北京市劳动保护科学研究所 | Porous composite sound absorption structure |
US20160215700A1 (en) * | 2015-01-23 | 2016-07-28 | Rohr, Inc. | Inner fixed structure acoustic panel with directional perforations |
US9650963B2 (en) * | 2015-01-29 | 2017-05-16 | Rohr, Inc. | Acoustic structural panel with herringbone core |
ITUB20152261A1 (en) * | 2015-07-17 | 2017-01-17 | Mecaer Aviation Group S P A | MULTILAYER PANEL FOR SOUNDPROOFING OF AIRCRAFT INTERIORS |
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FR3049651B1 (en) * | 2016-04-04 | 2019-06-21 | Airbus Operations | ACOUSTIC PANEL FOR AN AIRCRAFT NACELLE AND METHOD FOR MANUFACTURING THE ACOUSTIC PANEL. |
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EP3339677B1 (en) * | 2016-12-20 | 2019-11-20 | Airbus Operations, S.L. | Energy absorbing structure for attenuating the energy transmitted from an energy source |
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US10569495B2 (en) * | 2017-05-08 | 2020-02-25 | The Boeing Company | Composite structure assembly having a conformable core |
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US20220093072A1 (en) * | 2018-11-30 | 2022-03-24 | Ashmere Holdings Pty Ltd | Acoustic Absorption |
RU2723876C2 (en) * | 2018-12-06 | 2020-06-17 | Сергей Юрьевич Алышев | Multilayer composite material |
US11459085B2 (en) * | 2019-04-30 | 2022-10-04 | Textron Innovations Inc. | Energy attenuation stabilizers and methods |
CN112927668A (en) * | 2019-12-05 | 2021-06-08 | 财团法人工业技术研究院 | Sound insulation member |
TWI737065B (en) * | 2019-12-05 | 2021-08-21 | 財團法人工業技術研究院 | Soundproof member |
US20220366886A1 (en) * | 2021-05-12 | 2022-11-17 | B/E Aerospace, Inc | Aircraft acoustic panel |
US11804206B2 (en) * | 2021-05-12 | 2023-10-31 | Goodrich Corporation | Acoustic panel for noise attenuation |
US20220364514A1 (en) * | 2021-05-12 | 2022-11-17 | Rohr, Inc. | Nacelle liner comprising unit cell resonator networks |
CN113488018B (en) * | 2021-06-07 | 2022-08-09 | 哈尔滨工程大学 | Bendable and foldable hollow glass bead interlayer type flexible sound reflection structure and application |
CN113650724B (en) * | 2021-07-19 | 2022-10-28 | 哈尔滨工程大学 | Nonlinear anti-drag noise-reduction skin based on micro-space X-shaped mechanism array |
US20230048280A1 (en) * | 2021-08-16 | 2023-02-16 | The Boeing Company | Sound absorbing structures |
US11830467B2 (en) | 2021-10-16 | 2023-11-28 | Rtx Coroporation | Unit cell resonator networks for turbomachinery bypass flow structures |
US11781485B2 (en) | 2021-11-24 | 2023-10-10 | Rtx Corporation | Unit cell resonator networks for gas turbine combustor tone damping |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1502314A (en) * | 1974-04-08 | 1978-03-01 | Lockheed Aircraft Corp | Cellular sound absorptive structure |
US4433021A (en) * | 1982-09-22 | 1984-02-21 | Rohr Industries, Inc. | Sound attenuation sandwich panel including barrier material for corrosion control |
US4541879A (en) * | 1982-07-15 | 1985-09-17 | Rohr Industries, Inc. | Method of manufacture of noise suppression panel |
US5414232A (en) * | 1991-01-22 | 1995-05-09 | Short Brothers Plc | Noise attenuation panel |
EP0747285A1 (en) * | 1995-06-09 | 1996-12-11 | AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE, Société Anonyme | Sandwich panel using a composite material and method of making it |
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1998
- 1998-02-06 DE DE19804718A patent/DE19804718C2/en not_active Expired - Lifetime
-
1999
- 1999-02-03 EP EP99102139A patent/EP0935235A3/en not_active Ceased
- 1999-02-08 US US09/246,652 patent/US6179086B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1502314A (en) * | 1974-04-08 | 1978-03-01 | Lockheed Aircraft Corp | Cellular sound absorptive structure |
US4541879A (en) * | 1982-07-15 | 1985-09-17 | Rohr Industries, Inc. | Method of manufacture of noise suppression panel |
US4433021A (en) * | 1982-09-22 | 1984-02-21 | Rohr Industries, Inc. | Sound attenuation sandwich panel including barrier material for corrosion control |
US5414232A (en) * | 1991-01-22 | 1995-05-09 | Short Brothers Plc | Noise attenuation panel |
EP0747285A1 (en) * | 1995-06-09 | 1996-12-11 | AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE, Société Anonyme | Sandwich panel using a composite material and method of making it |
Also Published As
Publication number | Publication date |
---|---|
DE19804718C2 (en) | 2001-09-13 |
EP0935235A2 (en) | 1999-08-11 |
US6179086B1 (en) | 2001-01-30 |
DE19804718A1 (en) | 1999-08-19 |
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