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Apparatus and method for reducing noise emissions from a gas turbine engine inlet

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01D-025/00    F01N-007/00   
미국특허분류(USC) 415/119 ; 181/212 ; ; 60/2261
출원번호 US-0694967 (1996-08-09)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 26  인용 특허 : 5
초록

Noise attenuating linings for a turbofan engine inlet are installed around the upper crown area and/or around the lower lip. The acoustical lining at the upper crown area attenuates those fan noise emissions which are normally reflected from the crown area downward toward the ground. The acoustical lining at the lower inlet lip attenuates those fan noise emissions which travel along the inner surface of the lip and are diffracted around the lower lip downward toward the ground.

대표
청구항
▼

A method for reducing noise emissions from an inlet of a turbofan engine, the method comprising the steps of: a. installing noise attenuating material at a lower portion of the inlet having a lower leading edge; b. installing the noise attenuating material in a manner that it extends from the lower leading edge in a direction rearward along an inner surface of the lower inlet portion to a throat portion of the inlet; and c. installing the noise attentuating material in a manner that it extends from the lower leading edge in a direction rearward along an ...

이 특허에 인용된 특허 (5)

  1. Chee Wan T. (Bellevue WA). Inlet cowl attachment for jet engine. USP1985084534167.
  2. Kutney John T. (Cincinnati OH) Mishler Rodger B. (West Chester OH). Inlet noise deflector. USP1976033946830.
  3. Stockman Norbert O. (Batavia OH) Yates David E. (Cincinnati OH) Crum Timothy S. (Fairfield OH). Nacelle inlet for an aircraft gas turbine engine. USP1991105058617.
  4. Kelley Winfield L. (1581 Brickell Ave. Miami FL 33129). Noise attenuating and air streamlining spiral. USP1988114786231.
  5. Heufler Siegfried (Hard ATX) Sesser Hans (Bregenz ATX). Snow-making machine. USP1989054828175.

이 특허를 인용한 특허 피인용횟수: 26

  1. Borja,Mark Edward; Hendricks,Gavin Julian. Acoustic dampers. USP2008017322195.
  2. Surply, Thierry; Prat, Damien; Gagnaire, Benoit. Air inlet for commercial aircraft jet engine nacelle. USP2004036708711.
  3. Hogeboom William H. ; Bielak Gerald W.. Aircraft engine acoustic liner. USP1998075782082.
  4. Hogeboom William H. ; Bielak Gerald W.. Aircraft engine acoustic liner and method of making same. USP2001046209679.
  5. William H. Hogeboom ; Gerald W. Bielak. Aircraft engine acoustic liner and method of making the same. USP2002036360844.
  6. Porte, Alain; Batard, Herv?. Aircraft engine pod with acoustic attenuation. USP2005056896099.
  7. Jeffrey W. Moe. Aircraft wing and method for reducing airframe-generated noise. USP2002096454219.
  8. Moe,Jeffrey W.; Byrne,Stuart J.; James,Norman J.; Burdisso,Ricardo A.. Assembly and method for aircraft engine noise reduction. USP2006057047725.
  9. Olsen,Ronald F.; Breer,Marlin D.. Flow restrictors for aircraft inlet acoustic treatments, and associated systems and methods. USP2008027331421.
  10. Zecca, Joseph Christopher; Botura, Galdemir Cezar; Burkett, Brian Bobby; Hubert, Claude Marc; Layland, Michael John; Olson, Timothy Robert; Roman, James Michael. Ice protection system for a multi-segment aircraft component. USP2010117837150.
  11. Cloft, Thomas G.; Wiley, Richard H.. Integral suction device with acoustic panel. USP2010087766280.
  12. Cloft, Thomas G.; Wiley, Richard H.. Integral suction device with acoustic panel. USP2013068459597.
  13. Chiou, Song; Yu, Jia; Hubert, Claude; Layland, Michael; Kwan, Hwa-Wan. Linear acoustic liner. USP2012068196704.
  14. Labrecque, Michel; Couture-Gagnon, Vincent; Ullyott, Richard. Low noise aeroengine inlet system. USP2018059957889.
  15. Labrecque, Michel; Couture-Gagnon, Vincent; Ullyott, Richard. Low noise aeroengine inlet system. USP2018049951690.
  16. Labrecque, Michel; Couture-Gagnon, Vincent; Ullyott, Richard. Low noise aeroengine inlet system. USP20180810054050.
  17. Breer, Marlin D.; Olsen, Ronald F.; Kunze, Jr., Robert K.; Riedel, Brian L.. Method and apparatus for aircraft inlet ice protection. USP2004026688558.
  18. Marlin D. Breer ; Ronald F. Olsen ; Robert K. Kunze, Jr. ; Brian L. Riedel. Method and apparatus for aircraft inlet ice protection. USP2002046371411.
  19. Marlin D. Breer ; Ronald F. Olsen ; Robert K. Kunze, Jr. ; Brian L. Riedel. Method and apparatus for aircraft inlet ice protection. USP2002106457676.
  20. Shah, Anil D.; Gupta, Alankar. Method and apparatus for detecting conditions conducive to ice formation. USP2009127628359.
  21. Shah,Anil D.; Gupta,Alankar. Method and apparatus for detecting conditions conducive to ice formation. USP2007027175136.
  22. Friddell,Stephen D.; Prichard,Alan K.. Method and apparatus for liquid containment, such as for aircraft fuel vessels. USP2006087090167.
  23. Moe, Jeffrey W.; Wunsch, John J.; Sperling, Michael S.. Method and apparatus for noise abatement and ice protection of an aircraft engine nacelle inlet lip. USP2009097588212.
  24. Porte, Alain. Process for de-icing by forced circulation of a fluid, an air intake cowling of a reaction motor and device for practicing the same. USP2004036698691.
  25. Thrash, Patrick J.; Miller, David Michael. Unitized engine nacelle structure. USP2012078220588.
  26. Labrecque, Michel; Couture-Gagnon, Vincent; Ullyott, Richard. Variable geometry inlet system. USP20190310221764.

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