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특허 상세정보

Aero-engine exhaust jet noise reduction assembly

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02K-001/40    F02K-001/46   
미국특허분류(USC) 060/262; 060/264; 239/265.19; 239/265.17; 181/220
출원번호 US-0737599 (2000-12-18)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Pratt & Whitney Canada Corp.
인용정보 피인용 횟수 : 27  인용 특허 : 13
초록

A gas turbine engine of a fan bypass type includes an exhaust shroud having a perforated tubular wall extending between a forward end and an aft end. The exhaust shroud is adapted to be affixed to a gas turbine engine exhaust for discharging engine exhaust gases without substantial blockage thereto. The perforations formed in the shroud wall communicate the regions at both sides of the shroud wall to pass fluid flow across the perforated shroud wall so that the mixing of the engine exhaust gases with a surrounding fluid flow is enhanced. The mixing of th...

대표
청구항

1. A gas turbine engine comprising: a turbine portion; a combustor portion; a compressor portion driven by the turbine portion; and a noise reducing apparatus mounted to the engine at an exit end of the engine, the apparatus including an annular wall extending from a first open end to a second open end, the wall communicating directly with the exit end to thereby conduct engine exhaust gases therethrough, the wall having a plurality of perforations therethrough in a staggered offset pattern, the plurality of perforations disposed substantially over...

이 특허에 인용된 특허 (13)

  1. Friedrich Thomas E. (7 Egerton Place London ; S.W.3 GBX). Arrangement for suppressing jet engine noise. USP1990064934481.
  2. Presz ; Jr. Walter M. (Wilbraham MA) Paterson Robert W. (Simbury CT) Werle Michael J. (W. Hartford CT). Bodies with reduced surface drag. USP1988114786016.
  3. Tolman Alan G. (Phoenix AZ). Broad band acoustic attenuator. USP1981014244441.
  4. John F. Brausch ; Bangalore A. Janardan ; John W. Barter, IV ; Gregory E. Hoff. Chevron exhaust nozzle for a gas turbine engine. USP2002036360528.
  5. Rudolph Peter K. C. (Seattle WA). Gas turbine mixer apparatus. USP1980084215536.
  6. Ayyagari ; Radhakrishna. Gas turbine mixer apparatus for suppressing engine core noise and engine fan noise. USP1978034077206.
  7. Larson Richard S. (Rocky Hill CT) Packman Allan B. (West Hartford CT). Gas turbine noise suppressor. USP1981084284170.
  8. Brewer John A. (2120 Kensington Blvd. Fort Wayne IN 46805). Jet engine with compressor driven by a ram air turbine. USP1977104051671.
  9. Bagley Charles S. (1314 Ohio Ave. Alamogordo NM 88310). Jet propulsion engine and method. USP1989044817379.
  10. Hauser Joseph R.. Noise suppressing fluid mixing system for a turbine engine. USP2000016012281.
  11. Gilbertson Frederick L. (Toronto CAX) Garland Douglas B. (Toronto CAX) Whittley Donald C. (Toronto CAX). Nozzle structure with notches. USP1982014311291.
  12. Griffin ; Jr. Ralph Cornelius ; Bard William David ; Schein David Brian. Sound suppressor exhaust structure. USP1998025717172.
  13. Mathews Douglas C. ; Low John K. C.. Tabbed nozzle for jet noise suppression. USP2001116314721.

이 특허를 인용한 특허 피인용횟수: 27

  1. Viswanathan,Krishnamurthy. Apparatus and method for reduction jet noise from single jets. USP2008057377108.
  2. Viswanathan, Krishnamurthy. Apparatus and method for reduction of jet noise from single jets. USP2010087784285.
  3. Viswanathan, Krishnamurthy. Apparatus and method for reduction of jet noise from turbofan engines having separate bypass and core flaws. USP2010117836700.
  4. Viswanathan,Krishnamurthy. Apparatus and method for reduction of jet noise from turbofan engines having separate bypass and core flows. USP2008057377109.
  5. Lair, Jean-Pierre. Confluent exhaust nozzle. USP2005126971229.
  6. Cerra, David F.; Tretow, Paul Robert; Willie, Robert H.; Sahay, Abhishek. Core cowl for a turbofan engine. USP20181010094332.
  7. Clemen, Carsten; Lazik, Waldemar. Device for mixing fuel and air of a jet engine. USP2016039279587.
  8. Katheder,Karl. Device for mixing two flows of fluid which are initially guided separate from one another in a bypass jet engine. USP2007117299635.
  9. Prouteau,Jackie; Miroudot,Fr챕d챕ric. Device for reducing the jet noise of a turbomachine. USP2007127310939.
  10. Alhatim, Omair M.. Exhaust nozzle of a gas turbine engine. USP2016039297334.
  11. Baran, Kenneth C.. Fan variable area nozzle for a gas turbine engine fan nacelle with cam drive ring actuation system. USP2010057721549.
  12. Salamon, Keith T.; Turner, Matthew A.; Tirone, John P.. Flexible connection between a wall and a case of a turbine engine. USP2016069366185.
  13. Lord,Wesley K.; Zysman,Steven H.; Howlett,Matthew J.. Fluid mixer with an integral fluid capture ducts forming auxiliary secondary chutes at the discharge end of said ducts. USP2008107434384.
  14. Huzzard Cunningham, Mark. Gas turbine engine exhaust mixer including circumferentially spaced-apart radial rows of tabs extending downstream on the radial walls, crests and troughs. USP2014018635875.
  15. Alletzhauser, Eric W.. Gas turbine engine with fan variable area nozzle having a rotational valve system. USP2011067966827.
  16. Do, Logan H.; Krystowski, Edward A.. Gas turbine engine with variable area fan nozzle. USP2013108549834.
  17. Mengle, Vinod G.. Jet engine nozzle exit configurations and associated systems and methods. USP2011067966824.
  18. Mengle, Vinod G.. Jet engine nozzle exit configurations and associated systems and methods. USP2013088511090.
  19. Mengle, Vinod G.; Thomas, Russell H.. Jet engine nozzle exit configurations, including projections oriented relative to pylons, and associated systems and methods. USP2012048157207.
  20. Reba, Ramons Andris; Wake, Brian Ernest; Narayanan, Satish; Maeder, Thierry. Serrated nozzle trailing edge for exhaust noise suppression. USP2009067543452.
  21. Alhatim, Omair M.. System of support thrust from wasted exhaust. USP2018019879636.
  22. Birch, Stanley F.; Secundov, Alexander N.; Lyubimov, Dmitriy A.; Khritov, Konstantin M.; Maslov, Vladimir P.; Mironov, Aleksey K.. Systems and methods for passively directing aircraft engine nozzle flows. USP2011017870722.
  23. Birch, Stanley F.; Secundov, Alexander N.; Lyubimov, Dmitriy A.; Khritov, Konstantin M.; Maslov, Vladimir P.; Mironov, Aleksey K.. Systems and methods for passively directing aircraft engine nozzle flows. USP2012058166768.
  24. Alkislar, Mehmet B.; Butler, George W.; Reed, David H.. Systems and methods for reducing noise from jet engine exhaust. USP2011067966826.
  25. Chang, Esther H.; Pirollo, Kathleen F.. Treatment for exposure to nerve agent. USP2018019878055.
  26. Turner, Jeffrey A.; Sheoran, Yogendra Y.; Bouldin, Bruce D.. Turbine engine diffusing exhaust muffler. USP2010077762374.
  27. Thomas, Russell H.; Kinzie, Kevin W.. Wet active chevron nozzle for controllable jet noise reduction. USP2011098015819.