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특허 상세정보

Airplane with braced wings and pivoting propulsion devices

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/22   
미국특허분류(USC) 244/7A ; 244/7R ; 244/45R
출원번호 US-0308656 (1989-02-09)
발명자 / 주소
인용정보 피인용 횟수 : 26  인용 특허 : 0
초록

Conventional cantilever wings of a tiltrotor aircraft are replaced by a joined-wing configuration that eliminates some major speed-limiting constraints of prior tiltrotor configurations-thereby allowing operation into the intermediate speed range of roughly 350 to 450 knots. Joined wings offer relatively rigid, stiffened support for the additional wing-mounted hardware, and also stiffen the system to resist rotor flutter and other sources of aggravated loading, that are characteristic of tiltrotor craft. Joined wings provide this advantage, however, whil...

대표
청구항

A hybrid aircraft capable of vertical takeoff and highly efficient hovering flight, and of forward cruising flight at intermediate speeds approaching roughly four hundred knots, and comprising: a fuselage; self-bracing means for providing aerodynamic lift in forward cruising flight at speeds approaching roughly four hundred knots, and comprising, on each side of the fuselage: a first wing, fixed at substantially the bottom of the fuselage, that is substantially unperforated in hovering as well as forward flight, and a second wing, fixed at substantially ...

이 특허를 인용한 특허 피인용횟수: 26

  1. Garrett Timothy M.. Aerodynamic body having coplanar joined wings. USP1999055899410.
  2. Cazals, Olivier; Genty de la Sagne, Jaime. Aircraft presenting two pairs of wings and fuel tanks in fluid communication. USP2013058439310.
  3. Peters ; Jr. Spence E.. Aircraft structure to improve directional stability. USP2000086098923.
  4. Karem, Abe. Aircraft with integrated lift and propulsion system. USP2015018939393.
  5. Karem, Abe. Aircraft with integrated lift and propulsion system. USP2014108864062.
  6. Karem, Abe. Aircraft with integrated lift and propulsion system. USP2013088517302.
  7. Karem, Abe. Aircraft with integrated lift and propulsion system. USP2011017861967.
  8. Patt, Dan; Karem, Abe. Anhedral tip blades for tiltrotor aircraft. USP2011118066219.
  9. Gosling, Harry George Dennis. Annular airborne vehicle. USP2013048408489.
  10. Gosling, Harry George Dennis. Annular airborne vehicle. USP2012128328131.
  11. Gosling, Harry George Dennis. Annular airborne vehicle. USP2012098262016.
  12. Fink, Axel; Weiss, Ambrosius; Winkworth, Andrew. Compound helicopter. USP2016049321526.
  13. Fink, Axel; Blacha, Martin. Compound rotorcraft. USP20181110131424.
  14. Shenk, Barth W.. Compound tilting wing for high lift stability and control of aircraft. USP2003126659394.
  15. Razroev, Eldar Ali Ogly. Convertiplane (variants). USP2017079694908.
  16. Hernadi, Andras. Decagonal box-wing aircraft. USP201904D844538.
  17. Hernadi, Andras. Decagonal boxed-wing for aircraft. USP201903D843920.
  18. Garreau, Oliver F.. Joined-wing tilt-wing aircraft. USP201503D724001.
  19. Karem, Abe. Rotorcraft with opposing roll mast moments, and related methods. USP2012038128034.
  20. Shenk, Barth W.. System and method for calculating aerodynamic performance of tilting wing aircraft. USP2003046553333.
  21. Morgenstern, John M.. Tail-braced wing aircraft and configurations for achieving long supersonic range and low sonic boom. USP2004056729577.
  22. Burrage, Robert Graham. Tilt-rotor aircraft. USP2009097584923.
  23. Whitten, Jr., Donald Lee. Unmanned aerial vehicle. USP201805D817812.
  24. Cox,Beverly; Dews,Hampton; Nyroth,Nicholas. Unmanned airborne reconnaissance system. USP2006037014141.
  25. Cox,Beverly; Dews,Hampton; Nyroth,Nicholas. Unmanned airborne reconnaissance system. USP2007057210654.
  26. Cox, Beverly; Dews, Hampton; Nyroth, Nicholas. Unmanned biplane for airborne reconnaissance and surveillance having staggered and gapped wings. USP2003096626398.