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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
초록

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...

대표
청구항

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)

  1. Mani Ramani (Scotia NY). Acoustic duct with peripherally segmented acoustic treatment. USP1976023937590.
  2. Proscia,William; Jones,Christopher D.. Acoustic liner with bypass cooling. USP2007127311175.
  3. Sanicki,Scott; Costa,Mark W.. Acoustic mechanical retainer. USP2007117296656.
  4. Shawn S. Shirvan. Acoustically treated structurally reinforced sound absorbing panel. USP2002086439340.
  5. Porte, Alain; Batard, Herv?. Aircraft engine pod with acoustic attenuation. USP2005056896099.
  6. Della Mora, Pierangelo. Anti-noise and anti-vortex stabilizer. USP2005086935835.
  7. Matheny,Alfred Paul; Nelson,Kenneth I.. Braided wire damper for segmented stator/rotor and method. USP2006097104752.
  8. Le Biez, Philippe; Lebret, Yann; Mons, Claude. Casing, a compressor, a turbine, and a combustion turbine engine including such a casing. USP2005046881029.
  9. Khalid Syed J. (Palm Beach Gardens FL). Compressor endwall treatment. USP1996055520508.
  10. Costa,Mark W.; Brown,Charles W.; Freiler,Chris. Duct liner acoustic splice. USP2007117296655.
  11. Holt Paul (Rugby EN). Fan assemblies. USP1976033947148.
  12. Man-Chun Tse CA. Fan-stator interaction tone reduction. USP2002066409469.
  13. Freeman ; Christopher ; Moritz ; Robert Rudolph. Gas turbine engine with improved compressor casing for permitting higher air flow and pressure ratios before surge. USP1978044086022.
  14. Mulcaire, Thomas G; Holdsworth, Michael T; Evans, Richard. Guide vane assembly. USP2004076764276.
  15. Butler,George W.; Reed,David H.; Calkins,Frederick T.; Davis,Christopher L.; Mabe,James H.. High frequency jet nozzle actuators for jet noise reduction. USP2006087085388.
  16. Ho Patrick Y. ; Gliebe Philip R.. Low noise permeable airfoil. USP2000106139259.
  17. Nadeau, Sylvain; Kurbatskii, Konstantin. Low tone axial fan structure. USP2003076599085.
  18. Wilkinson Wilfred H. (Turnditch GB2). Metal cavitated sandwich structures. USP1979074161231.
  19. Wilson, Robert Samuel. Noise attenuation panel. USP2004126827180.
  20. Duane C. McCormick ; Wesley K. Lord. Passively driven acoustic jet controlling boundary layers. USP2002046379110.
  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.
  27. Kouichi Irie JP; Tomoyoshi Okamura JP; Akira Manabe JP; Junichi Kurokawa JP. Turbo machines. USP2002086435819.
  28. Frantz John J. (Fairfield OH). Variable double lip quiet inlet. USP1979014132240.
  29. Costa,Mark W.; Brown,Charles; Foose,Andrew S.. Zero acoustic splice fan case liner. USP2008027328771.