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특허 상세정보

External acoustic liners for multi-functional aircraft noise reduction

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-001/40    B64C-025/00   
출원번호 US-0417351 (2012-03-12)
등록번호 US-9623952 (2017-04-18)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Warmbier, Andrea Z.
인용정보 피인용 횟수 : 1  인용 특허 : 17
초록

Acoustic liners for aircraft noise reduction include one or more chambers that are configured to provide a pressure-release surface such that the engine noise generation process is inhibited and/or absorb sound by converting the sound into heat energy. The size and shape of the chambers can be selected to inhibit the noise generation process and/or absorb sound at selected frequencies.

대표
청구항

1. An aircraft comprising: a fuselage defining outwardly-facing surfaces and lift-generating wings extending outwardly in generally opposite directions away from the fuselage and defining outer wing surfaces;at least one engine having a thrust-generating element, and wherein the aircraft includes a source of noise that produces noise during operation of the aircraft;a noise absorbing acoustic liner disposed on the outer surfaces of the fuselage and the wings, and having a depth dimension, the noise absorbing liner including: a porous outer surface that p...

이 특허에 인용된 특허 (17)

  1. Harper, Cedric B.. Acoustic liners. USP2011067967108.
  2. Mau, Knut; Grünewald, Michael; Reichenberger, Johann; Borchers, Ingo; Drobietz, Roger. Aerodynamic flap of an aircraft having a device which influences the flap vortex. USP2012018096513.
  3. Hogeboom William H. ; Bielak Gerald W.. Aircraft engine acoustic liner. USP1998075782082.
  4. Jeffrey W. Moe. Aircraft wing and method for reducing airframe-generated noise. USP2002096454219.
  5. Chow,Leung Choi; Rondeau,David Leonard; Wood,Christopher Neil. Landing gear door assembly. USP2008127458542.
  6. Moe, Jeffrey W.; Whitmire, Julia; Kwan, Hwa-Wan; Abeysinghe, Amal. Landing gear noise attenuation. USP2011067954757.
  7. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W.. Lift augmentation system and associated method. USP2011108033510.
  8. Harper, Cedric B; Creagh, Michael; Humphries, Neil; Martindale, Ian G. Liner for a gas turbine engine casing. USP2011017866939.
  9. Wilson Robert S. (Belfast GB5). Noise attenuation panel. USP1996085543198.
  10. Harris Alfred W. (Bellevue WA). Noise reducing air inlet for gas turbine engines. USP1980124240250.
  11. Hutcheson,Florence V.; Brooks,Thomas F.. Noise reduction of aircraft flap. USP2009027484930.
  12. Lin, Juhn-Shyue; Hoffman, Herbert L.; Chewning, Gary R.; Kosanchick, III, Melvin; Poling, Hugh. Particle-filled wing-to-body fairing and method for reducing fairing vibrations. USP2011118056850.
  13. Leishman, John G.; Han, Yong Oun. Rotor blade system with reduced blade-vortex interaction noise. USP2005096948906.
  14. Glenn E. Warnaka. Sound absorbing structure. USP2002086435303.
  15. Warnaka Glenn E. (Erie PA). Sound absorbing structure. USP1979024141433.
  16. Pal, Anadish Kumar. Surface flow diverting and static charging ducted pores on wing or blade tip to reduce wake and BVI noise. USP2009127637462.
  17. Wagenfeld Robert E. (New York NY). System for reducing aircraft noise and hush kit. USP1989064836469.