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특허 상세정보

Active control of multi-element rotor blade airfoils

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-011/18   
미국특허분류(USC) 416/001; 416/024; 416/155; 416/231.B
출원번호 US-0331107 (2002-12-27)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Carlson, Gaskey &
인용정보 피인용 횟수 : 10  인용 특허 : 17
초록

A multi-element rotor blade includes an individually controllable main element and fixed aerodynamic surface in an aerodynamically efficient location relative to the main element. The main element is controlled to locate the fixed aerodynamic surface in a position to increase lift and/or reduce drag upon the main element at various azimuthal positions during rotation.

대표
청구항

1. A multi-element rotor blade for an aircraft comprising:a main element rotatable about an axis of rotation; an second aerodynamic surface fixed along a leading edge of said main element; a control for pitching said main element at a rate greater then once per revolution such that said second aerodynamic surface is positioned to enhance the aerodynamic performance of said main element relative to azimuthal position. 2. The multi-element rotor blade as recited in claim 1, wherein said control comprises a root actuator to pitch said main element.3. The mu...

이 특허에 인용된 특허 (17)

  1. Kohlhepp Fred W.. Actuation system for an active rotor control system. USP2001036200096.
  2. Jaenker Peter,DEX. Airfoil member with a piezoelectrically actuated servo-flap. USP2001056231013.
  3. Gantt Michael A. (Granby CT) Larson John A. (New Hartford CT). Bearing having multi-sided inner ring bore with elastomeric rings. USP1996015482383.
  4. Hudson James H.. Compressor thrust bearings. USP1998045741116.
  5. Gwinn James T.. Elastomeric bearing. USP2001056224047.
  6. Redinger W. Scott. Elastomeric bearing and assembly method therefor. USP1999065915842.
  7. Hofmann Manfred (Hunfelden DEX). Engine mount with controllable rigidity. USP1997105681032.
  8. Aoki Makoto,JPX ; Nishimura Hiroki,JPX ; Yamakawa Eiichi,JPX. Helicopter blade aerofoil. USP1999105961290.
  9. Fradenburgh Evan A. (Fairfield CT). Helicopter main rotor blade having a short span slot near the tip end. USP1987044655685.
  10. Domzalski David B. ; Straub Friedrich K. ; Kennedy Dennis K.. Helicopter rotor blade flap actuator government interest. USP2000106135713.
  11. Bauer Karl,DEX. Helicopter rotor blade with a movable flap. USP2001016168379.
  12. Bruehl Herbert,DEX. Hydraulically damping elastomer bearing. USP2001016168144.
  13. Moses Charles J. ; Hogan Michael E.. Load and deflection measurement system for elastomeric bearings. USP1999055905212.
  14. Kondo Natsuki,JPX ; Tsujiuchi Tomoka,JPX ; Yamakawa Eiichi,JPX. Rotor blade for rotary wing aircraft. USP2001056231308.
  15. Yamakawa Eiichi,JPX ; Murashige Atsushi,JPX ; Tsujiuchi Tomoka,JPX. Rotor blade for rotorcraft. USP2001026190132.
  16. Hobdy Miles A.. Turret bearing structure for vessels. USP1999015860382.
  17. Aoki Makoto,JPX ; Nishimura Hiroki,JPX ; Yamakawa Eiichi,JPX. helicopter blade aerofoil. USP1999095957662.