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특허 상세정보

Method of reducing a nose-up pitching moment on a ducted unmanned aerial vehicle

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/30   
미국특허분류(USC) 244/006 ; 244/012.3 ; 244/023B
출원번호 US-0296716 (1999-04-22)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Seidel, Gonda, Lavorgna & Monaca, PC
인용정보 피인용 횟수 : 56  인용 특허 : 19
초록

A method for reducing a nose-up pitching moment in an unmanned aerial vehicle during forward flight. The unmanned aerial vehicle includes counter-rotating rotor assemblies that are mounted within a duct. Each rotor assembly includes a plurality of rotor blades. The method involves adjusting the rotor blades to have substantially zero pitch. Then rotating the rotor assemblies to produce a virtual plane across the duct. The virtual plane is operative for substantially deflecting air passing over the fuselage away from the duct. In one embodiment of the inv...

대표
청구항

[ What is claimed is:] [1.] A method for reducing a nose-up pitching moment in an unmanned aerial vehicle during forward flight, the unmanned aerial vehicle including counter-rotating rotor assemblies mounted within a duct, the duct extending downwardly through a fuselage in the unmanned aerial vehicle, each rotor assembly including a plurality of rotor blades, the method comprising the steps of:adjusting the rotor blades to have substantially zero pitch;rotating the rotor assemblies to produce a virtual plane across the duct, the virtual plane operative...

이 특허에 인용된 특허 (19)

  1. Mutrux Jean L. (6 Sumac La. St. Louis MO 63124). Aircraft. USP1980044196877.
  2. Bucher Franz (Basel CHX). Aircraft with a ducted fan in a circular wing. USP1994045303879.
  3. Flemming ; Jr. Robert J. (Trumbull CT) Rosen Kenneth M. (Guilford CT) Sheehy Thomas W. (Hamden CT). Ancillary aerodynamic structures for an unmanned aerial vehicle having ducted, coaxial counter-rotating rotors. USP1995055419513.
  4. Cycon James P. (Orange CT) Kohlhepp Fred W. (Hamden CT) Millea Vincent F. (Stratford CT). Coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors. USP1994105351913.
  5. Cycon James P. (Orange CT) Millea Vincent F. (Stratford CT) Kohlhepp Fred W. (Hamden CT) Hansen Bruce D. (Shelton CT). Drive train assembly for a rotor assembly having ducted, coaxial counter-rotating rotors. USP1993075226350.
  6. Buchelt, Benno E.. Free standing or aircraft lift generator. USP1991075035377.
  7. Swinson ; deceased Johnny ; Walker ; executrix by Sueanne ; James Terry J.. Horizontal and vertical take off and landing unmanned aerial vehicle. USP1999045890441.
  8. Buchelt Benno (Maria Saal ATX). Lifting engine for VTOL aircrafts. USP1989014796836.
  9. Moffitt Robert C. (Seymour CT) Owen Stephen J. (Cheshire CT). Shroud geometry for unmanned aerial vehicles. USP1992095150857.
  10. Sadleir Kimberley V. (Winthrop AUX). Thrust unit for VTOL aircraft. USP1995045407150.
  11. Cycon James P. (Orange CT) Furnes Kenneth M. (Monroe CT) Kohlhepp Fred W. (Hamden CT) Farrell Marvin D. (Beacon Falls CT) Sandy David F. (West Haven CT). Toroidal fuselage structure for unmanned aerial vehicles having ducted, coaxial, counter-rotating rotors. USP1994015277380.
  12. Valverde Rene L. (4405 Toledo St. Coral Gables FL 33146). Turbocraft. USP1991085039031.
  13. Valverde Rene L. (4405 Toledo St. Coral Gables FL 33146). Turbocraft. USP1992095149012.
  14. McGonigle Kevin P. (Milford CT) Ferraro John (Clinton CT) Cycon James P. (Orange CT). Unmanned VTOL ground surveillance vehicle. USP1996115575438.
  15. Cycon James P. (Orange CT) Rosen Kenneth M. (Guilford CT) Whyte Andrew C. (Norwalk CT). Unmanned flight vehicle including counter rotating rotors positioned within a toroidal shroud and operable to provide al. USP1992105152478.
  16. Clifton Robert T. (7999 Hansen ; #420 Houston TX 77061). V/STOL Aircraft. USP1984094469294.
  17. Dlouhy Vaclav (6561 Frietchie Row Columbia MD 21045). VTOL aircraft. USP1993015178344.
  18. Vassa (Suratano Thienphropa) John (5293 Fountain Ave. Los Angeles CA 90029). VTOL aircraft. USP1995065421538.
  19. MacLean ; Ewen M. ; Spector ; George. Vertical take-off and landing (VTOL) aircraft with fixed horizontal variable-pitched rotors. USP1978114125232.

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  4. McCullough, John Richard; Oldroyd, Paul K.. Aircraft having a fault tolerant distributed propulsion system. USP20190310232950.
  5. McCullough, John Richard; Oldroyd, Paul K.. Aircraft having autonomous and remote flight control capabilities. USP20190210214285.
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  7. Vetters, Daniel Kent; Barlow, Andrew. Aircraft vertical lift device. USP2015109156549.
  8. McCullough, John Richard; Oldroyd, Paul K.. Aircraft with independently controllable propulsion assemblies. USP20190110183746.
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