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특허 상세정보

Jet engine noise suppressor

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02K-003/02    F02K-003/00    F02K-001/34    F02K-001/00    F02K-001/40   
미국특허분류(USC) 060/226.1; 060/262; 060/230; 060/231; 181/213; 181/220; 239/265.17; 239/265.35
출원번호 US-0393173 (2003-03-20)
등록번호 US-7293401 (2007-11-13)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Blakely, Sokoloff, Taylor & Zafman
인용정보 피인용 횟수 : 11  인용 특허 : 21
초록

An embodiment of the invention is a technique to suppress noise in a jet engine. A noise suppressor includes an exhaust duct to exhaust a first stream from an air stream taken from an inlet. The exhaust duct has an exit end. The air stream is divided into the first stream and a second stream. The second stream has an axis. A stream director attached to vicinity of the exit end directs the first stream to a direction that is away from or sideward relative to the axis.

대표
청구항

What is claimed is: 1. A turbofan jet engine comprising: a first exhaust duct to exhaust a first stream through a first exit end from an air stream taken from an inlet, the air stream being divided into the first stream and a second stream, one of the first and second streams being a fan bypass stream; a second exhaust duct to exhaust the second stream through a second exit end, the first and second streams being substantially coaxial at the first and second exit ends; and a noise-reducing stream director attached to a vicinity of at least one of the fi...

이 특허에 인용된 특허 (21)

  1. Shivashankara Belur N. (Bellevue WA) Miller Wendell R. (Renton WA) Stubbs Gene W. (Seattle WA). Acoustic reflector for ground plane microphone. USP1986124625828.
  2. Bozich Daniel J. (San Diego CA) Wagenfeld Robert (Westport CT). Active gas turbine (jet) engine noise suppression. USP1995025386689.
  3. Rudolph Peter K. C.. Aircraft turbofan engine mixing apparatus. USP1998065771681.
  4. John J. Dugan. Apparatus for reducing noise in the jet engine. USP2002086427801.
  5. Friedrich Thomas E. (7 Egerton Place London ; S.W.3 GBX). Arrangement for suppressing jet engine noise. USP1990064934481.
  6. Batey J. Gary. Core flow expansion chamber device system for reduction of jet turbine engine noise. USP1998065758488.
  7. Richard A Pinker GB. Exhaust nozzle for by-pass gas turbine engines. USP2002076415598.
  8. Dessale Bruno Filbert,FRX ; Duparcq Jean-Luc Gerard,FRX ; Joubert Hugues Denis,FRX. Exhaust nozzle mixer for a turbofan engine. USP1998055755092.
  9. Steven H. Zysman ; Wesley K. Lord ; Gregory A. Kohlenberg. Gas turbine engine jet noise suppressor. USP2002126487848.
  10. Larson Richard S. (Rocky Hill CT) Packman Allan B. (West Hartford CT). Gas turbine noise suppressor. USP1981084284170.
  11. Berman Charles H.. Jet engine noise suppressor assembly. USP1999095947412.
  12. Stanek, Michael J.. Jet noise suppressor. USP2003066571549.
  13. Shaw ; Jr. Leonard L. (Troy OH). Jet noise suppressor and method. USP1992035092425.
  14. Gordon Walter R. (Savannah GA). Jet noise suppressor nozzle. USP1976093982696.
  15. Bhat Waman V. (Redmond WA). Noise-suppressing jet engine nozzles and method. USP1981074280587.
  16. Gilbertson Frederick L. (Toronto CAX) Garland Douglas B. (Toronto CAX) Whittley Donald C. (Toronto CAX). Nozzle structure with notches. USP1982014311291.
  17. Janardan, Bangalore Ananthamurthy; Brausch, John Francis. Stub airfoil exhaust nozzle. USP2003016502383.
  18. Cowan ; Sr. Howard H. (3315 N. Godfrey #36 Midland TX 79707). System for suppressing engine exhaust noise. USP1995075428954.
  19. Lair,Jean Pierre. Turbofan variable fan nozzle. USP2006016983588.
  20. Osborn Melvin N. (Los Angeles CA). Variable shape, fluid flow nozzle for sound suppression. USP1983124422524.
  21. Birch Stanley F. (Bellevue Federal Way WA) Lawler John A. (Federal Way WA) Paynter Gerald C. (Seattle WA). Vortex generators for internal mixing in a turbofan engine. USP1981114298089.

이 특허를 인용한 특허 피인용횟수: 11

  1. Papamoschou,Dimitri. Jet engine noise suppressor. USP2009017472543.
  2. Mengle, Vinod G.. Jet engine nozzle exit configurations and associated systems and methods. USP2011067966824.
  3. Mengle, Vinod G.. Jet engine nozzle exit configurations and associated systems and methods. USP2013088511090.
  4. Tanaka, Nozomi; Kusuda, Shinya; Oishi, Tsutomu; Oba, Yoshinori. Noise reduction system with chamber. USP2014088813907.
  5. 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.
  6. 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.
  7. Alkislar, Mehmet B.; Butler, George W.; Reed, David H.. Systems and methods for reducing noise from jet engine exhaust. USP2011067966826.
  8. Papamoschou, Dimitri. Turbofan engine noise suppression using fan flow deflector. USP2015048997454.
  9. Niergarth, Daniel Alan; Prentice, Ian Francis; Kroger, Christopher James. Variable pitch fan blade retention system. USP20181010100653.
  10. Miller, Brandon Wayne; Prentice, Ian Francis; Niergarth, Daniel Alan. Variable pitch fan for gas turbine engine and method of assembling the same. USP20180910072510.
  11. Niergarth, Daniel Alan; Miller, Brandon Wayne; Bradley, Donald Albert. Variable-pitch rotor with remote counterweights. USP2018019869190.