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특허 상세정보

Central body for a turbojet exhaust channel, turbojet

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02K-001/00   
미국특허분류(USC) 060/770; 181/213
출원번호 US-0742829 (2007-05-01)
등록번호 US7886543 (2011-02-02)
우선권정보 FR-2006-6 04615(2006-05-23)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
인용정보 피인용 횟수 : 5  인용 특허 : 15
초록

A device for attenuating acoustic noise from an exhaust nozzle of a turbojet is disclosed. The turbojet exhaust nozzle includes a central body spaced apart from an external casing, defining a gas exhaust channel therebetween. The central body includes a flexible sleeve within an external wall, defining at least one resonator cavity therebetween. The at least one resonator cavity is in fluid communication with the gas exhaust channel via a plurality of orifices through at least one upstream portion of the external wall. The at least one resonator cavity a...

대표
청구항

The invention claimed is: 1. A central body disposed within an outer casing of a turbojet gas exhaust nozzle, defining a gas exhaust channel therebetween, comprising:an external wall including a plurality of orifices through at least one upstream portion of the external wall; andat least one internal wall forming at least one resonance cavity between the external wall and the at least one internal wall,wherein the at least one resonance cavity and the plurality of orifices form at least one Helmholtz resonator, andwherein the at least one internal wall c...

이 특허에 인용된 특허 (15)

  1. Wasif,Samer P.; Johnson,Clifford E.. Acoustic resonator with impingement cooling tubes. USP2008087413053.
  2. Wynosky Thomas A. (Madison CT). Acoustical turbine engine tail pipe plug. USP1980124240519.
  3. Ewing Joseph H. (Lake Pk. FL) Baker ; II John H. E. (Palm Beach Gardens FL). Ceramic blanket augmentor liner. USP1993025184455.
  4. Jakob Keller CH; Georg Keller CH; Vera Keller CH. Combustion chamber for a gas turbine. USP2002036351947.
  5. Lowrie ; Brian W.. Duct linings. USP1978104122672.
  6. Webb Lee F. (Russells Point OH). Hush kit for jet engine. USP1997015592813.
  7. Campbell,Thomas A.; Voll,William A.; Diamond,John A.. Integrated axially varying engine muffler, and associated methods and systems. USP2007097267297.
  8. Sattinger, Stanley S.. Method of suppressing combustion instabilities using a resonator adopting counter-bored holes. USP2009067549506.
  9. Czachor, Robert P.. Methods and apparatus for minimizing thermal stresses in a centerbody. USP2003076584766.
  10. Sattinger, Stanley S.; Darling, Douglas Dean; Holbert, Roy Kyle; Kepes, William E.. Modular resonators for suppressing combustion instabilities in gas turbine power plants. USP2003036530221.
  11. Tseo Gudin (San Diego CA). Slanted cavity resonator. USP1977124064961.
  12. Kishi Kimihiro (Komaki JPX). Sound absorbing apparatus for a supersonic jet propelling engine. USP1997085655361.
  13. Snyder Stephen J. (West Hills CA). Sound attenuating laminate installation for jet aircraft engines. USP1990084947958.
  14. Herman Gerald T. (Seattle WA). Turbojet engine nozzle for attenuating core and turbine noise. USP1979024137992.
  15. Lair, Jean-Pierre. Variable area plug nozzle. USP2005016845607.