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특허 상세정보

Device for acoustic treatment of the noise emitted by a turbojet

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-001/40   
미국특허분류(USC) 244/001N; 181/292; 181/288; 060/262
출원번호 US-0267327 (2011-10-06)
등록번호 US-8579225 (2013-11-12)
우선권정보 FR-10 58148 (2010-10-07)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
인용정보 피인용 횟수 : 6  인용 특허 : 18
초록

The invention provides a device for acoustical treatment of the noise emitted by a bypass turbojet comprising a primary cowl having in an outer surface an inner annular acoustic treatment panel and a secondary cowl including in an inner surface an outer annular acoustic treatment panel arranged facing the inner panel. The inner and outer panels include respective central panel portions facing each other and extending axially over a common predetermined length, the length of the central panel portions lying in the range one-fifth to four-fifths of the tot...

대표
청구항

1. A device for acoustically treating the noise emitted by a bypass turbojet, the device comprising: a primary cowl for surrounding a central core of the turbojet and including an inner annular acoustic treatment panel placed in an outer surface of the primary cowl; anda secondary cowl surrounding the primary cowl to co-operate therewith to define an annular channel for passing a cold flow from the turbojet, the secondary cowl including an outer annular acoustic treatment panel placed in an inner surface of the secondary cowl, the outer panel facing the ...

이 특허에 인용된 특허 (18)

  1. Julliard, Jacques Michel Albert; Molinari, Olivier Michael; Morel, Patrick Charles Georges; Riou, Georges Jean Xavier. Acoustic flow straightener for turbojet engine fan casing. USP2010027661261.
  2. Autie Pascal J. M. (Paris FRX) Avignon Philippe P. (Combs-la-Ville FRX) Camusso Dominique P. (Evry FRX) Forestier Alexandre (Melun FRX) Ulryck Gilles (Ballancourt FRX). Acoustic panel for sound insulating linings of gas ducts. USP1989084858721.
  3. Gliebe Philip R. (Waynesville OH). Active low noise fan assembly. USP1995125478199.
  4. Hoetzeldt, Stephan; Thomas, Christian. Aircraft cabin panel with core recesses for acoustic absorption. USP2012128336804.
  5. Porte, Alain; Batard, Herv?. Aircraft engine pod with acoustic attenuation. USP2005056896099.
  6. Vauchel, Guy Bernard; Dauguet, Jean-Philippe; Beilliard, Stephane. Aircraft nacelle guidance system installation. USP2012128333344.
  7. Dhoore Louis G. (Seattle WA) Schultz William H. (Bellevue WA). Combination bulk absorber-honeycomb acoustic panels. USP1980114235303.
  8. Emborg, Urban; Sarin, Sohan. Device at an acoustic liner. USP2004116811372.
  9. Huber, Jerome; Bonnet, Jean-Paul; Delville, Joel; Jordan, Peter; Strekowski, Francois. Device for reducing noise generated by an aircraft jet engine with curve ducts. USP2012048157050.
  10. Huber, Jerome; Bonnet, Jean-Paul; Delville, Joel; Jordan, Peter; Strekowski, Francois. Device with plane jets for reducing the noise generated by an aircraft engine. USP2012038132756.
  11. Journade, Frederic; Lafont, Laurent. Engine assembly for aircraft with sliding nacelle. USP2012078226027.
  12. Arcas Noe ; Hutto Frederick M. ; Parente Charles A.. Extended reaction acoustic liner for jet engines and the like. USP1999075923003.
  13. Blackner Anthony M.. Jet engine and method for reducing jet engine noise by reducing nacelle boundary layer thickness. USP2000086094907.
  14. Torkelson Delbert W. (Claremore OK). Jet engine fixed plug noise suppressor. USP1992125167118.
  15. Torkelson Delbert W. (Claremore OK). Jet engine noise reduction system. USP1991105060471.
  16. Haines James Charles ; Fay Ralph Michael. Method of making sound absorbing laminates and laminates having maximized sound absorbing characteristics. USP1998105824973.
  17. Morin, Bruce L.; Ksiazkiewicz, Jr., Rudolph A.; Cicon, Dennis. Micro-perforated acoustic liner. USP2009067540354.
  18. Wilson, Robert Samuel. Noise attenuation panel. USP2004126827180.