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특허 상세정보

System for reducing aircraft noise and hush kit

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64D-029/00    B64D-033/04   
미국특허분류(USC) 244/1N ; 181/213 ; 181/220 ; 181/222
출원번호 US-0055635 (1987-05-29)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 22  인용 특허 : 3
초록

A system is provided for existing three-engine jet aircraft to reduce the noise levels at take-off and landing in order to meet governmental noise regulations. The system is particularly suitable for 727-200 aircraft having three JT8D engines. A hush kit is formed of the modified components for installation in existing airplanes.

대표
청구항

A method for quieting jet engine noise produced by an airplane having three jet engines upon take-off and landing, comprising: (a) replacing two outboard-mounted jet engines at the rear of the fuselage with jet engines which produce lower noise and greater thrust; (b) retaining a center fuselage-mounted jet engine, and removing a thrust reverser from the aft position thereof; (c) mounting a forced-air mixer on the center engine at the position from which the thrust reverser was removed, the mixer being adapted to combine cold air passing around the engin...

이 특허를 인용한 특허 피인용횟수: 22

  1. Moore, Matthew D.; Boren, Kelly L.; Marques, Edward C.. Aircraft. USP201008D622653.
  2. Moore, Matthew D.; Boren, Kelly L.; Marques, Edward C.. Aircraft configuration. USP2011098016233.
  3. Moore, Matthew D.; Boren, Kelly L.; Marques, Edward C.; Lan, Justin. Aircraft configuration. USP2014018628040.
  4. Hogeboom William H. ; Bielak Gerald W.. Aircraft engine acoustic liner. USP1998075782082.
  5. Hogeboom William H. ; Bielak Gerald W.. Aircraft engine acoustic liner and method of making same. USP2001046209679.
  6. William H. Hogeboom ; Gerald W. Bielak. Aircraft engine acoustic liner and method of making the same. USP2002036360844.
  7. Andre,Joan; Andrieu,Laurent. Aircraft provided with thrust reversers. USP2006097107757.
  8. Moore, Matthew D.; Boren, Kelly L.; Marques, Edward C.. Airplane configuration. USP2012018087607.
  9. Suciu, Gabriel L.; Merry, Brian D.. Conjoined reverse core flow engine arrangement. USP2017129845159.
  10. Batey J. Gary. Core flow expansion chamber device system for reduction of jet turbine engine noise. USP1998065758488.
  11. Lair, Jean-Pierre. Duplex mixer exhaust nozzle. USP2004096786038.
  12. Jones, Michael G.; Thomas, Russell H.; Nark, Douglas M.; Howerton, Brian M.; Czech, Michael J.. External acoustic liners for multi-functional aircraft noise reduction. USP2017049623952.
  13. 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.
  14. Webb Lee F. (Russells Point OH). Hush kit for jet engine. USP1997015592813.
  15. Jones, Michael G.; Howerton, Brian M.; Van De Ven, Thomas. Landing gear door liners for airframe noise reduction. USP2014048708272.
  16. Hilbert Gary R. ; Pearson David D. ; Crawley Edward F.. Method and apparatus for damping vibration in turbomachine components. USP2001106299410.
  17. Kirk Philip S. ; Dugan John J.. Method and apparatus for reducing airplane noise. USP2000126161797.
  18. Fujino Michimasa,JPX ; Kawamura Yuichi,JPX. Method for reducing wave resistance in airplane. USP2001106308913.
  19. Khorrami, Mehdi R.. Reactive orthotropic lattice diffuser for noise reduction. USP2016019227719.
  20. Lillibridge Robert W. ; McGuire Kenneth R. ; Phillips Edward J. ; Matthews Eugene James. Turbofan engine with reduced noise. USP1999085943856.
  21. Lillibridge Robert W. ; McGuire Kenneth R. ; Phillips Edward J. ; Matthews Eugene James. Turbofan engine with reduced noise. USP1998085791138.
  22. Osman, Medhat. Ultra hush exhaust system (UHES). USP20181210156207.