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특허 상세정보

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Multi-layer acoustic linings

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E04B-001/82   
미국특허분류(USC) 181/286 ; 181/292
출원번호 US-0092089 (1979-11-06)
우선권정보 GB-0050046 (1978-12-27)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 70  인용 특허 : 1
초록
▼

A multi-layer acoustic lining, e.g. for a flow duct in a gas turbine aeroengine, includes Helmholtz-type and tube-type resonators sandwiched between backing and facing sheets. In the invention, the ends of the tube-type resonators abut the Helmholtz resonators but are acoustically divided from them by partition means in such a way that the tube-type resonators differ from each other in resonant frequency. Variation of resonant frequency in the tube-type resonators is achieved by variation of their lengths according to which portion of the partition means...

대표
청구항
▼

A multi-layer acoustic lining for a fluid flow duct comprising: an impermeable backing layer; a sound permeable facing layer spaced from said impermeable backing layer; a plurality of Helmholtz resonators sandwiched between said backing layer and said sound permeable facing layer, said plurality of Helmholtz resonators being defined by a first set of resonator compartments, each of which is acoustically coupled to said sound permeable facing layer by a resonator neck means having a cross-sectional area restrictive relative to the cross-sectional area of ...

이 특허에 인용된 특허 (1)

  1. Hoch Rene G. (La Rochette FRX) Jubelin Bernard J. L. (Cesson FRX) Sarlat Pierre M. A. (Fontainebleau FRX) Thomas Pierre (La Houssaye en Brie FRX). Resonant cavity devices for reducing noise within a duct in the presence of a gaseous fluid. USP1979044150732.

이 특허를 인용한 특허 피인용횟수: 70

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  2. Martinez, Michael Moses; Majjigi, Rudramuni Kariveerappa; Davies, Steven Thomas; Geertsema, Egbert. Acoustic liner for gas turbine engine components. USP20190110174675.
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  5. Nampy, Sreenivas Narayanan. Acoustic panel with vertical stiffeners. USP2018059978354.
  6. Porte, Alain; Lalane, Jacques; Gantie, Fabrice; Barillot-Creuzet, Jacques. Acoustic processing structure particularly adapted to the air inlet of an aircraft nacelle. USP2013048413922.
  7. Nampy, Sreenivas Narayanan; Biset, Charles Michael; Soria, Christian. Acoustic structural panel with herringbone core. USP2017059650963.
  8. Barry Brian (Duffield GB2) Freeman Christopher (Farnsfield GB2). Aerodynamic damping of vibrations in rotor blades. USP1985074531362.
  9. Dausch, Uwe. Air-diffusion panel for a motor vehicle. USP2004116814182.
  10. Suciu, Gabriel L.; Norris, James W; Nordeen, Craig A.; Merry, Brian. Annular turbine ring rotor. USP2014038672630.
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  12. Dobbeling Klaus,CHX ; Paschereit Christian,CHX ; Polifke Wolfgang,CHX. Arrangement for damping combustion-chamber oscillations. USP2000126164058.
  13. Suciu, Gabriel; Roberge, Gary D.; Merry, Brian. Axial compressor for tip turbine engine. USP2010127845157.
  14. Nordeen, Craig A.; Suciu, Gabriel L.. Balanced turbine rotor fan blade for a tip turbine engine. USP2014088807936.
  15. Chien, Eugene; Yu, Jia; Chiou, Song. Broadband acoustic panels coupled with large secondary cavities to attenuate low frequencies. USP2017089732677.
  16. Suciu, Gabriel L.; Roberge, Gary D.; Merry, Brian. Cantilevered tip turbine engine. USP2011108033094.
  17. Cazuc, Xavier; Joret, Jean-Philippe. Cellular acoustic structure for a turbojet engine and turbojet engine incorporating at least one such structure. USP2017069670878.
  18. Suciu, Gabriel L.; Nordeen, Craig A.; Kramer, Stephen. Combustor for turbine engine. USP2011098024931.
  19. Ross David F. (Scottsdale AZ) Lyon Craig A. (Mesa AZ). Compact muffler apparatus and associated methods. USP1987024645032.
  20. Morgenthaler David R.. Composite fairing with integral damping and internal helmholz resonators. USP2000086098926.
  21. Merry, Brian; Suciu, Gabriel L.; Norris, James W.; Nordeen, Craig A.. Counter-rotating compressor case and assembly method for tip turbine engine. USP2011118061968.
  22. Suciu, Gabriel; Merry, Brian; McCune, Michael E.. Counter-rotating gearbox for tip turbine engine. USP2015028950171.
  23. Brooks, Richard V.; Coupland, John. Damping assembly. USP2015089097179.
  24. Suciu, Gabriel L.; Norris, James W.; Nordeen, Craig A.. Diffuser aspiration for a tip turbine engine. USP2013068468795.
  25. Suciu, Gabriel L.; Roberge, Gary D.. Ejector cooling of outer case for tip turbine engine. USP2011077980054.
  26. Sternberger, Joe Everet; Gallman, Judith Marie. Engine inlet varying impedance acoustic liner section. USP2014108863893.
  27. Suciu, Gabriel L.; Norris, James W.; Nordeen, Craig A.; Merry, Brian. Fan blade with integral diffuser section and tip turbine blade section for a tip turbine engine. USP2011027887296.
  28. Liu, Zheji. Gas compression apparatus and method with noise attenuation. USP2005076918740.
  29. Bouchard, Richard; Girard, Gaetan; Pronovost, Christian. Gas turbine exhaust case with acoustic panels. USP2015129200537.
  30. Bitzer Thomas N.. Honeycomb core with controlled crush properties. USP2001066245408.
  31. Nusser Lori A. ; Dixon G. Douglass ; Hull H. Robert. Honeycomb crash pad. USP2000126158771.
  32. Nusser Lori A. ; Dixon G. Douglass ; Hull H. Robert. Honeycomb crash pad. USP2001116318755.
  33. Nordeen, Craig A.; Norris, James W.. Individual inlet guide vane control for tip turbine engine. USP2015038967945.
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  35. Griffin Steven ; Huybrechts Steven. Mechanically coupled helmholtz resonators for broadband acoustic attenuation. USP2000056069840.
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  49. Merry, Brian; Webb, Scot Adams; McCune, Michael. Starter generator system for a tip turbine engine. USP2011017874163.
  50. Billy, Frédéric. Thermo-acoustic protection structure for a rotating machine. USP2016109469256.
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  52. Suciu, Gabriel L.; Norris, James W.; Merry, Brian. Tip turbine engine composite tailcone. USP2017129845727.
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