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특허 상세정보

Turbofan variable fan nozzle

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02K-001/12    F02K-001/00    F02K-003/04    F02K-003/00   
미국특허분류(USC) 060/226.1; 060/711; 239/265.33
출원번호 US-0338499 (2003-01-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 35  인용 특허 : 6
초록

A turbofan exhaust nozzle includes a fan duct defined between a fan nacelle and core engine cowling. The duct includes an arcuate outlet at the trailing edge of the nacelle. A movable flap is disposed in a minor portion of the fan duct, with a remaining major portion of the fan duct having a constant flow area. The flap may be moved between stowed and deployed positions to locally decrease flow area inside the duct for noise attenuation.

대표
청구항

Accordingly, what is desired to be secured by Letters Patent of the United States is the invention as defined and differentiated in the following claims in which I claim: 1. A turbofan exhaust nozzle comprising: a fan nacelle surrounding a core engine cowling to define a fan duct radially therebetween for discharging fan air; said fan duct including an arcuate outlet disposed radially between said cowling and a trailing edge of said nacelle; said fan duct further including a movable flap disposed solely in a minor portion thereof, with a remaining major...

이 특허를 인용한 특허 피인용횟수: 35

  1. Winter, Michael; Jain, Ashok K.. Actuation of a turbofan engine bifurcation to change an effective nozzle exit area. USP2012038137060.
  2. Calder, David Patrick; Bhutiani, Pupinder. Apparatus and methods for linear actuation of flow altering components of jet engine nozzle. USP2013128613398.
  3. Migliaro, Jr., Edward F.; Winter, Michael; Jain, Ashok K.. Bifurcation and aft vent used to vary fan nozzle exit area. USP2014028650854.
  4. Jasklowski, Christopher; Sangwin, Michael L.; Foutch, David William; Alkislar, Mehmet Bahadir; Dilligan, Matthew Anthony. Cable-actuated variable area fan nozzle with elastomeric seals. USP2015059021813.
  5. Core, Robert A.. Dilating fan duct nozzle. USP2010057716932.
  6. Hanson, Russell B.. Fan variable area nozzle for a gas turbine engine fan nacelle. USP2010057721551.
  7. Rosenkrans, William E.; Morris, Robert J.. Flutter sensing system for a gas turbine engine. USP2014028646251.
  8. Baltas, Constantine. Gas turbine engine bifurcation located fan variable area nozzle. USP2018029885313.
  9. Baltas, Constantine. Gas turbine engine having variable flow through a bifurcation having an intake with multiple louvers. USP2013048418471.
  10. Parry,Anthony B. Gas turbine engine including stator vanes having variable camber and stagger configurations at different circumferential positions. USP2008117444802.
  11. Alletzhauser, Eric W.. Gas turbine engine with fan variable area nozzle having a rotational valve system. USP2011067966827.
  12. Smith, Peter G.; Ochs, Stuart S.; Schwarz, Frederick M.. Gas turbine engine with low fan pressure ratio. USP2013068459035.
  13. Do, Logan H.; Krystowski, Edward A.. Gas turbine engine with variable area fan nozzle. USP2013108549834.
  14. Smith, Peter G.; Ochs, Stuart S.. Gas turbine engine with variable geometry fan exit guide vane system. USP2013018347633.
  15. Papamoschou,Dimitri. Jet engine noise suppressor. USP2007117293401.
  16. Papamoschou,Dimitri. Jet engine noise suppressor. USP2009017472543.
  17. Sawyers-Abbott, Nigel David; Exner, Matthew. Link arm drag reducing device. USP2017069670877.
  18. Moniz, Thomas Ory; Seda, Jorge Francisco; Orlando, Robert Joseph. Method of operating a turbofan engine cowl assembly. USP2012018091334.
  19. Bakken, David Alan. Methods and apparatus for sealing variable area fan nozzles of jet engines. USP2018069989009.
  20. Lair, Jean-Pierre. Pivoting door thrust reverser for a turbofan gas turbine engine. USP2012058172175.
  21. Jasklowski, Christopher T.. Pivoting ring petal actuation for variable area fan nozzle. USP2017059650991.
  22. Jasklowski, Christopher T.. Shape memory alloy actuation system for variable area fan nozzle. USP2017029581145.
  23. Lair, Jean-Pierre. Thrust reverser. USP2011118051639.
  24. Lair, Jean-Pierre. Thrust reverser door. USP2012018091827.
  25. Lair, Jean-Pierre. Thrust reverser door. USP2011118052086.
  26. Lair, Jean-Pierre. Thrust reverser for a turbofan gas turbine engine. USP2011118052085.
  27. Lair, Jean-Pierre; Weaver, Paul. Thrust reverser for a turbofan gas turbine engine. USP2012038127530.
  28. Lair, Jean-Pierre. Thrust reverser nozzle for a turbofan gas turbine engine. USP2011098015797.
  29. Winter, Michael; Hanson, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2009127637095.
  30. Winter, Michael; Hanson, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2014078769925.
  31. Winter, Michael; Harison, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2014088806850.
  32. Moniz, Thomas Ory; Seda, Jorge Francisco; Orlando, Robert Joseph. Turbofan engine cowl assembly and method of operating the same. USP2011027886518.
  33. Papamoschou, Dimitri. Turbofan engine noise suppression using fan flow deflector. USP2015048997454.
  34. Kemper, Paul D.; Moniz, Thomas Ory; Seda, Jorge Francisco. Turbofan engine nozzle assembly and method of operating same. USP2010067726116.
  35. Chakkera, Kevin K.; Vaughan, Ron. Variable area fan nozzle systems with improved drive couplings. USP2016119488130.