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특허 상세정보

Multi-splice acoustic liner

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64D-033/02   
미국특허분류(USC) 181/214; 181/210; 181/212; 415/119; 244/001N; 244/053B
출원번호 US-0437466 (2006-05-19)
등록번호 US-8602156 (2013-12-10)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Carlson, Gaskey & Olds, P.C.
인용정보 피인용 횟수 : 1  인용 특허 : 29

A liner assembly for an aircraft engine housing includes a noise attenuation structure that is covered by a face sheet. The face sheet covering the noise attenuation structure includes a surface having a plurality of circumferentially spaced apart acoustic energy absorption areas that are interspersed between a corresponding plurality of acoustic energy reflective areas. The acoustic energy reflective areas scatter higher order acoustic modes into a plurality of lower order modes. The difficult to attenuate lower order acoustic modes produced by the vari...


1. A method of attenuating noise within an aircraft engine housing comprising the steps of: a) absorbing a portion of generated acoustic energy in an acoustic energy absorption area, where the acoustic energy absorption area comprises a noise attenuation structure disposed under a face sheet portion including a plurality of openings, wherein a width of the plurality of energy absorption areas varies to provide a uniformly orientated repeating pattern within the aircraft engine housing; andb) scattering higher order acoustic energy at a plurality of locat...

이 특허에 인용된 특허 (29)

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  2. Proscia,William; Jones,Christopher D.. Acoustic liner with bypass cooling. USP2007127311175.
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  19. Wilson, Robert Samuel. Noise attenuation panel. USP2004126827180.
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  21. Lord, Wesley K.. Reduced noise fan exit guide vane configuration for turbofan engines. USP2003046554564.
  22. Schaut Larry A. (Renton WA). Rotating acoustically lined inlet splitter for a turbo-fan engine. USP1997075649419.
  23. Ehrich ; Frederic Franklin. Spiral strip acoustic treatment. USP1978084104002.
  24. Berthillier,Marc; Cloarec,Yvon; Seinturier,Eric. Structure comprising a rotor and fixed perturbation sources and method for reducing vibrations in said structure. USP2006047029227.
  25. Porte, Alain. Tubular acoustic attenuation piece for an aircraft jet engine air intake. USP2004076761245.
  26. Irie, Kouichi; Okamura, Tomoyoshi; Manabe, Akira; Kurokawa, Junichi. Turbo machines. USP2003066582189.
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