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특허 상세정보

Minimum drag wing configuration for aircraft operating at transonic speeds

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-005/08   
미국특허분류(USC) 244/91 ; 244/199
출원번호 US-0862286 (1977-12-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 38  인용 특허 : 0
초록

A wing extension or tip fin is disclosed wherein the tip fin is joined to an aircraft wing to form a nonplanar wing configuration which minimizes induced drag during both low speed and high speed operation of an aircraft. The tip fin which is of generally trapezoidal geometry, extends streamwise along the end of the aircraft wing and is canted to project upwardly and outwardly therefrom. Additionally, the tip fin is twisted to toe-out relative to the freestream direction with the angle of twist varying along the lower portion of the tip fin length. Viewe...

대표
청구항

A tip fin mountable to the outboard end of an aircraft wing to form a nonplanar wing configuration for reducing induced drag relative to that exhibited by the wing alone, said tip fin having first and second boundary surfaces contoured to define an airfoil section including a leading edge, a trailing edge, a root chord and a tip chord, said tip fin leading edge extending between said tip fin root chord and said tip fin chord at a first predetermined angle, said tip fin trailing edge extending between said tip fin root chord and said tip fin tip chord at ...

이 특허를 인용한 특허 피인용횟수: 38

  1. Guida, Nicholas R.. Active winglet. USP2014048684315.
  2. Guida, Nicholas R.. Active winglet. USP2017099764825.
  3. Jupp Jeffrey A. (Filton GBX) Rees Peter H. (Hatfield GBX). Aircraft wing and winglet arrangement. USP1987124714215.
  4. Speer, Stephen R.. Aircraft winglet design having a compound curve profile. USP20180810053209.
  5. Fort F. Felker. Aircraft with elliptical winglets. USP2002116484968.
  6. Dizdarevic, Faruk; Dizdarevic, Mithad. Airlifting surface division. USP2003066578798.
  7. Paul E. McMahon ; Tai-Shung Chung ; Lincoln Ying. Composite fiber blends. USP2002066403504.
  8. Guida, Nicholas R.. Controllable airflow modification device periodic load control. USP2017029567066.
  9. Sankrithi, Mithra M. K. V.; Frommer, Joshua B.. Controllable winglets. USP2010067744038.
  10. Kasper Witold A. (7747 -115th Pl. NE. Kirkland WA 98033). Flying wing aircraft. USP1988114781341.
  11. Guida, Nicholas R.. Multiple controllable airflow modification devices. USP2015109162755.
  12. Guida, Nicholas R.. Multiple controllable airflow modification devices. USP2018059969487.
  13. Roman, Dino L.; Vassberg, John C.; Friedman, Douglas M.; Malachowski, Adam P.; Vegter, Christopher A.. Performance-enhancing winglet system and method. USP2015018936219.
  14. Yechout, Thomas R.. Rakelet. USP2013028382041.
  15. Wobben, Aloys. Rotor blade for a wind turbine. USP2013088506255.
  16. Wobben, Aloys. Rotor blade for a wind turbine. USP2010097794209.
  17. Gratzer, Louis B.. Split blended winglet. USP20190410252793.
  18. Gratzer, Louis B.. Split blended winglet. USP20180610005546.
  19. Gratzer, Louis B.. Split blended winglet. USP2016049302766.
  20. Gratzer, Louis B.. Split blended winglet. USP2015028944386.
  21. Gratzer, Louis B.. Split blended winglet. USP20181010106247.
  22. Gratzer, Louis B.. Split spiroid. USP2017029580170.
  23. Gratzer, Louis B.. Split spiroid. USP2015059038963.
  24. Gratzer, Louis B.. Split spiroid. USP2016099434470.
  25. Roman, Dino L.; Vassberg, John C.; Friedman, Douglas M.; Malachowski, Adam P.; Vegter, Christopher A.. Split winglet system. USP2017059637226.
  26. Ivans, Steven Ray; Wu, Nathan Gabriel. Tiltrotor aircraft having rotatable wing extensions. USP20180710011349.
  27. Ivans, Steven Ray; Wu, Nathan Gabriel. Tiltrotor aircraft having rotatable wing extensions. USP20190110173771.
  28. Wright, Christopher; Chu, James K.; Himisch, Jan. Wing tip device. USP2015119193445.
  29. Wright, Christopher; Chu, James K.; Himisch, Jan. Wing tip device. USP2015129199727.
  30. Wright, Christopher; Chu, James K.; Himisch, Jan. Wing tip device. USP2015059033282.
  31. Chaussee, Julien; Paumes, Camille; Wijker, Norman; Alexander, Stuart. Wing tip device attachment apparatus and method. USP2016119499255.
  32. Zaman, AbuMuhammed A.. Wing tip device for an aircraft wing. USP2016129511850.
  33. Theurich, Frank; Himisch, Jan. Wing tip shape for a wing, in particular of aircraft. USP2017019550563.
  34. Theurich, Frank; Himisch, Jan. Wing tip shape for a wing, in particular of aircraft. USP2014058727285.
  35. Gratzer, Louis B.. Wing tip with optimum loading. USP2016079381999.
  36. Roman, Dino L.; Vassberg, John C.; Friedman, Douglas M.; Malachowski, Adam P.; Vegter, Christopher A.. Winglet system. USP2016059346537.
  37. Roman, Dino L.; Vassberg, John C.; Friedman, Douglas M.; Malachowski, Adam P.; Vegter, Christopher A.. Winglet system and method. USP2015129216817.
  38. Roman, Dino L.; Vassberg, John C.; Friedman, Douglas M.; Malachowski, Adam P.; Vegter, Christopher A.. Winglet system having upper and lower winglet. USP2016109463871.