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특허 상세정보

Wing tip devices

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-003/16   
미국특허분류(USC) 244/1994; 244/047; 416/238
출원번호 US-0661031 (2005-09-15)
등록번호 US7971832 (2011-06-21)
우선권정보 GB-2004-420601.7(2004-09-16)
국제출원번호 PCT/GB2005/003553 (2005-09-15)
§371/§102 date 20070223 (20070223)
국제공개번호 WO06/030213 (2006-03-23)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    McDonnell Boehnen Hulbert & Berghoff LLP
인용정보 피인용 횟수 : 17  인용 특허 : 17

A tip device to act as an outboard continuation of an aircraft wing or other aerodynamic lifting surface has a downward cant angle, a leading edge swept back in relation to the leading edge of the inboard lifting surface, and a chord reducing in the outboard direction of the device. A favourable balance between induced drag reduction and increased wing root bending moment can thereby be achieved. Preferably the device also has an upwardly canted portion at its root end so that the downward cant commences from a relatively elevated spanwise location, ther...


The invention claimed is: 1. A tip device to act as an outboard continuation of an aerodynamic lifting surface, said lifting surface being without anhedral, wherein said device has a downward cant angle and in planform has a leading edge swept back in relation to the leading edge of the lifting surface inboard thereof, a trailing edge swept back in relation to the trailing edge of the lifting surface inboard thereof and at a sweep angle which increases in the outboard direction of the device at least from a position substantially outboard of the root o...

이 특허에 인용된 특허 (17)

  1. Johnstone Edmund H. (82 Salzburg Blvd. Apt. G Columbus IN 47201). Aircraft wing vortex deflector. USP1976083974986.
  2. Fort F. Felker. Aircraft with elliptical winglets. USP2002116484968.
  3. Welles Stanley W. (3943 SW. Rose St. Seattle WA 98136). Airframe design. USP1987064674709.
  4. Dizdarevic, Faruk; Dizdarevic, Mithad. Airlifting surface division. USP2003066578798.
  5. Toulmay Francois V. (Vitrolles FRX) Falchero Danile A. (Ventabren FRX). Blade for aircraft rotary wings, with swept-back tip. USP1994075332362.
  6. Toulmay Fran.cedilla.ois Valentin Gaston,FRX ; Zibi Joelle Marguerite,FRX. Blade with swept-back tip for the rotary wings of an aircraft. USP1999126000911.
  7. Gratzer Louis B. (2201 3rd Ave. #2004 Seattle WA 98121). Blended winglet. USP1994095348253.
  8. Herrick Larry L. ; Bays-Muchmore C. Byram ; Hoffman Michael S. ; LeGrand Louis L. ; Ogg Steven S. ; Paul ; Jr. Bernard P. ; Visser Kenneth D. ; Wells Stephen L.. Blunt-leading-edge raked wingtips. USP2000076089502.
  9. Hoisington, Zachary C.; Rawdon, Blaine K.. Ground effect wing having a variable sweep winglet. USP2003046547181.
  10. Perry Frederick J. (Yeovil GB2). Helicopter rotor blades. USP1990124975022.
  11. Rudolph Peter K. C. (Seattle WA). High taper wing tip extension. USP1991085039032.
  12. Hagiwara, Nobuyuki; Horike, Shoji. Method of manufacturing hub unit for supporting wheel and die for manufacturing the same. USP2004086772615.
  13. Jerry E. Carlow. Mobius-like joining structure for fluid dynamic foils. USP2002116474604.
  14. McCarthy Peter T. (134 Park St. #5 Buffalo NY 14201). Tip vortex generation technology for creating a lift enhancing and drag reducing upwash effect. USP1997065634613.
  15. Finch ; Reginald Vernon. Vortex reducing wing tip. USP1978084108403.
  16. Santos Jonathan (2902 Tapered La. Bowie MD 20715). Wing tip airfoils. USP1986064595160.
  17. Heller, Gerd; Maisel, Manfred; Kreuzer, Peter. Wing tip extension for a wing. USP2004046722615.