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Exhaust flow guide for jet noise reduction

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01N-001/00   
미국특허분류(USC) 181/213; 084/214; 084/215
출원번호 US-0879988 (2001-06-14)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Yan, Wayne H.Renault, Ogilvy
인용정보 피인용 횟수 : 22  인용 특허 : 13
초록
▼

A gas turbine engine includes an exhaust flow guide attached to the engine exhaust end. The exhaust flow guide is made of a piece of sheet metal curved about the central longitudinal axis of the engine to form a partial portion of a nozzle having curved leading and trailing edges, and side edges. The exhaust flow guide asymmetrically affects the downstream jet noise contribution volume of the exhaust gases discharged from the engine exhaust end to change the jet noise directivity and reduce its power level. The exhaust flow guide can further include addi...

대표
청구항
▼

A gas turbine engine includes an exhaust flow guide attached to the engine exhaust end. The exhaust flow guide is made of a piece of sheet metal curved about the central longitudinal axis of the engine to form a partial portion of a nozzle having curved leading and trailing edges, and side edges. The exhaust flow guide asymmetrically affects the downstream jet noise contribution volume of the exhaust gases discharged from the engine exhaust end to change the jet noise directivity and reduce its power level. The exhaust flow guide can further include addi...

이 특허에 인용된 특허 (13)

  1. Secrest Lynn Thomas ; Tetley Paul Antony. Acoustic silencer nozzle. USP2000096112850.
  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. Neumann Gerhard (Swampscott MA). Gas turbine engine noise shield. USP1976063964568.
  4. Larson Richard S. (Rocky Hill CT) Packman Allan B. (West Hartford CT). Gas turbine noise suppressor. USP1981084284170.
  5. Wilkinson Wilfred H. (Turnditch GB2). Metal cavitated sandwich structures. USP1979074161231.
  6. Neal ; Brian ; Andersen ; Lars Q.. Noise suppressing exhaust mixer assembly for ducted-fan, turbojet engine. USP1978104117671.
  7. Parente Charles A.. Noise suppression system for a jet engine. USP1998025721402.
  8. Fletcher James C. Administrator of the National Aeronautics and Space Administration ; with respect to an invention of ( Palo Alto CA) Cheng Dah Y. (Palo Alto CA). Noise suppressor for turbo fan jet engines. USP1983024372110.
  9. Wlezien Richard W. (Darien IL). Porous single expansion ramp. USP1996025491307.
  10. Griffin ; Jr. Ralph Cornelius ; Bard William David ; Schein David Brian. Sound suppressor exhaust structure. USP1998025717172.
  11. Lillibridge Robert W. ; McGuire Kenneth R. ; Phillips Edward J. ; Matthews Eugene James. Turbofan engine with reduced noise. USP1999085943856.
  12. Herman Gerald T. (Seattle WA). Turbojet engine nozzle for attenuating core and turbine noise. USP1979024137992.
  13. Presz ; Jr. Walter M.. Two-stage mixer ejector suppressor. USP1998065761900.

이 특허를 인용한 특허 피인용횟수: 22

  1. Drack, Lorenz Edwin; Maeder, Thierry Pascal; Sengundermudaliar, Gowri Jaganathan; Vijayakumar, Karthickprabu. Acoustic shield for noise reduction in wind turbines. USP2017069677537.
  2. Harrison, Geoffrey E.. Annular acoustic panel. USP2005076920958.
  3. Germain,Patrick; Bruno,Vittorio. Axisymmetric flap on gas turbine exhaust centerbody. USP2006047032387.
  4. Haley, Paul F.. Centrifugal compressor assembly and method. USP2010127856834.
  5. Haley, Paul F.; Dorman, Dennis R.; Hamm, Jr., Frederic Byron; Foye, David M.; Kwiatkowski, James A.; James, Rick T.; Janssen, Randall L.; Plzak, William J.. Centrifugal compressor assembly and method. USP2017019556875.
  6. Haley, Paul F.; Dorman, Dennis R.; Hamm, Jr., Frederic Byron; Foye, David M.; Kwiatkowski, James A.; James, Rick T.; Janssen, Randall L.; Plzak, William J.. Centrifugal compressor assembly and method. USP2011108037713.
  7. Haley, Paul F.; James, Rick T.. Centrifugal compressor assembly and method. USP2016059353765.
  8. Haley, Paul H.; Dorman, Dennis R.; Hamm, Jr., Frederic Byron; Foye, David M.; Kwiatkowski, James A.; James, Rick T.; Janssen, Randall L.; Plzak, William J.. Centrifugal compressor assembly and method. USP2014018627680.
  9. James, Rick T.; Haley, Paul F.; Janssen, Randall L.; Plzak, William J.. Coaxial economizer assembly and method. USP2017069683758.
  10. James, Rick T.; Haley, Paul F.; Janssen, Randall L.; Plzak, William J.. Coaxial economizer assembly and method. USP2011077975506.
  11. Baran, Kenneth C.. Fan variable area nozzle for a gas turbine engine fan nacelle with cam drive ring actuation system. USP2010057721549.
  12. Durocher, Eric; Gekht, Eugene; Lefebvre, Guy. Gas turbine engine exhaust duct ventilation. USP2010107805925.
  13. Alletzhauser, Eric W.. Gas turbine engine with fan variable area nozzle having a rotational valve system. USP2011067966827.
  14. Do, Logan H.; Krystowski, Edward A.. Gas turbine engine with variable area fan nozzle. USP2013108549834.
  15. Suchezky, Mark E.; Simpkins, Lisa M.. Jet engine exhaust nozzle and associated system and method of use. USP2014068746613.
  16. Nesbitt, Eric H.; Yee, Mark; Elkoby, Ronen; Hebert, Leonard J.; Alston, Thomas E.. Jet nozzle having noise attenuating shield and method therefor. USP2011027883049.
  17. Rose, Marco; Spieweg, Rene. Nozzle with guiding devices. USP2017039605621.
  18. Rose, Marco; Spieweg, Rene. Nozzle with guiding devices. USP2016039279387.
  19. Williams,Nicholas A.; Yip,Susan E.. Procedure for replacement of acoustic liner in integrated exhaust duct muffler for use with airborne auxiliary power units. USP2008117448133.
  20. Sankrithi, Mithra M. K. V.; Nelson, Paul E.. Rotatable scarf inlet for an aircraft engine and method of using the same. USP2004076764043.
  21. Dun, Roy. Scarf nozzle for a jet engine and method of using the same. USP2005116969028.
  22. Blodgett,Keith Edward James; Early,Kevin Sean; Martens,Steven; Bailey,William Andrew; Price,Kenneth Daniel. Sinuous chevron exhaust nozzle. USP2007127305817.

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