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특허 상세정보

Piezoelectric helicopter blade flap actuator

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-023/00   
미국특허분류(USC) 416/4 ; 416/39
출원번호 US-0385709 (1989-07-26)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 25  인용 특허 : 0
초록

Electrically deformable material such as piezoelectric material is used to deform a deflectable flap on an airfoil such as a helicopter blade. The electrically deformable material is controlled to deflect the flap in a manner to control vibrations transmitted from a helicopter blade to the helicopter air frame. In a preferred embodiment, the electrically deformable material and mechanical linkages are segmented along the length of the rotor blade. In this way, differential actuation of the deformable elements results in variable flap deflections along th...

대표
청구항

An aerodynamic control device comprising: an airfoil having a spar at the leading edge and a deflectable flap at the trailing edge, and at least one deformation member comprising an electrically deformable material, said member being mounted within the airfoil and cantilevered to the spar of the airfoil at one end and attached to the deflectable flap at the other end so that electrical stimulation of the material causes the deformation member to bend to deflect the flap, wherein the deformation member includes an inert plate and a plate comprising an ele...

이 특허를 인용한 특허 피인용횟수: 25

  1. Khozikov, Vyacheslav; Liu, Shengyi; Roe, George M.. Active directional control of airflows over rotorcraft blades using plasma actuating cascade arrays. USP2012048157528.
  2. Khozikov, Vyacheslav; Liu, Shengyi; Roe, George M.. Active directional control of airflows over wind turbine blades using plasma actuating cascade arrays. USP2012048162610.
  3. Alan J. Bilanin ; Robert M. McKillip, Jr.. Actuating device with at least three stable positions. USP2002026345792.
  4. McKillip ; Jr. Robert M.. Actuating device with multiple stable positions. USP2001046220550.
  5. Monner Hans Peter,DEX. Aerofoil profile with variable profile adaptation. USP2000106138956.
  6. Piening Matthias,DEX ; Monner Hans Peter,DEX. Aerofoil profile with variable profile adaptation. USP2000126164599.
  7. Jaenker Peter,DEX. Airfoil member with a piezoelectrically actuated servo-flap. USP2001056231013.
  8. Bak, Dan Christian; Buhl, Thomas; Fuglsang, Peter; Madsen, Helge Aagaard; Rasmussen, Flemming. Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control. USP2009127632068.
  9. Germanetti, Serge. Device for varying lade pitch of a lift rotor. USP2015119181811.
  10. Khozikov, Vyacheslav; Liu, Shengyi. Disbanded cascaded array for generating and moving plasma clusters for active airflow control. USP2012088251318.
  11. Eiichi Nakasato JP; Noriaki Katayama JP; Tetsuya Hori JP; Asao Kakinuma JP. Flap hinge mechanism, method for manufacturing the same, and flap hinge apparatus. USP2002116474945.
  12. Fred J. Brandon ; Michael S. L. Hollis. Gun hardened, rotary winged, glide and descent device. USP2002026347764.
  13. Kennedy Dennis K. ; Straub Friedrich K. ; Hassan Ahmed A.. Helicopter in-flight rotor tracking system, method, and smart actuator therefor. USP2001116322324.
  14. Domzalski David B. ; Straub Friedrich K. ; Kennedy Dennis K.. Helicopter rotor blade flap actuator government interest. USP2000106135713.
  15. Bauer Karl,DEX. Helicopter rotor blade with a movable flap. USP2001016168379.
  16. Hall Steven R. ; Prechtl Eric F.. High-efficiency, large stroke electromechanical actuator. USP1999055907211.
  17. Barocela,Edward; Vaporean,Charles N.. Low-drag rotor/wing flap. USP2006037014142.
  18. Zhiqiang Wu ; Li Li ; Thomas A. Figura JP; Kunal R. Parekh ; Pai-Hung Pan ; Alan R. Reinberg ; Kin F. Ma. Material removal method for forming a structure. USP2002106461967.
  19. Breitbach Elmar J.,DEX ; Bein Thilo,DEX. Profile edge of an aerodynamic profile. USP2000066076776.
  20. Bansemir Horst,DEX ; Hausmann Gerhard,DEX. Rotor blade connection. USP1999126004099.
  21. Noriaki Katayama JP; Tatsuro Hongu JP; Eiichi Yamakawa JP. Rotor blade flap drive apparatus. USP2002126499690.
  22. Grohmann, Boris; Maucher, Christoph; Altmikus, Andree; Mangelsdorf, Stephan. Rotor blade for a rotary wing aircraft. USP2012048162607.
  23. Bauer, Markus; Denecke, Ulrich; Kuntze-Fechner, Gerald; Mueller, Christine; Sahlstorfer, Hermann; Wagner, Alois. Rotor blade with flap and flap drive. USP2003116644919.
  24. Shome, Moushumi; Calkins, Frederick T.; Apdalhaliem, Sahrudine. Variable camber airfoil system. USP2015099145198.
  25. Betran Palomas, Jaume. Wind turbine blade. USP2017099759191.