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특허 상세정보

Flexible tailored elastic airfoil section

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-003/52   
미국특허분류(USC) 244/219 ; 244/123 ; 244/76R ; 114/127
출원번호 US-0650472 (1991-02-04)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 46  인용 특허 : 0
초록

A flexible airfoil section for a wing or a blade comprising a streamlined shape and an elastic structure whose stiffness distribution along its chord and span is tailored to provide a desirable cambered shape with proportional increases in camber with increases in lift, mounted to a supporting structure such that the airfoil sections are free to pivot about axes near their leading and trailing edges. In operation, the foil derives much of its lift from elastic bending deformation of its flexible shape, thereby achieving a higher lift than a symmetric foi...

대표
청구항

A flexible elastic airfoil for generating lift as a result of cambered deflection under load in a moving fluid medium, mounted on a support structure attached to an apparatus operating in contact with a moving fluid medium, said flexible airfoil assembly comprising a) a flexible elastic airfoil section having a leading edge, a trailing edge, a chord c and an exterior profile of a general continuous streamlined shape such that adjacent points on said exterior surface remain in contact as the airfoil deflects in camber, the airfoil being generally made of ...

이 특허를 인용한 특허 피인용횟수: 46

  1. Grove,Graham Bond. Aerofoil arrangement. USP2008127461820.
  2. Lutke, Kevin Reed; Kutzmann, Aaron Jonathan. Aircraft having inflatable fuselage. USP2015018931739.
  3. Lau Jark C. ; Lin Philip Sim. Apparatus for stabilizing a moving low-strength sheet. USP1998065759352.
  4. Koehler, Frederick B; Sanderson, Terry M; Reany, Jack W. Chord-expanding air vehicle wings. USP2014108864065.
  5. Sanderson, Terry M.; Sar, David R.. Collapsible wing beams and method. USP2012098262032.
  6. Linn, Rodman Ray; Koo, Eunmo. Determining effects of turbine blades on fluid motion. USP2012058170813.
  7. Lentz, Jeff. Engine airfoils and methods for reducing airfoil flutter. USP2018019879539.
  8. Bailey, Stephen Lee. Externally supported foil with reversible camber and variable chord length. USP2015119175702.
  9. Chelf, Jonathan David. Fan blade with flexible airfoil wing. USP2017119810236.
  10. Barrett, Kenneth Charles. Flexible blade configuration for efficiently moving fluid using a waving motion. USP2017079702368.
  11. Garver, Theodore M.. Fluid interface device as well as apparati and methods including same. USP2016079394046.
  12. Karem, Abe. High performance outboard section for rotor blades. USP2012038128376.
  13. Lutke, Kevin Reed; Kutzmann, Aaron Jonathan. Inflatable airfoil system configured to reduce reflection of electromagnetic waves. USP20190410259561.
  14. Lutke, Kevin Reed; Kutzmann, Aaron Jonathan. Inflatable airfoil system having reduced radar and infrared observability. USP2014058727280.
  15. Lutke, Kevin Reed; Kutzmann, Aaron Jonathan. Inflatable airfoil system having reduced radar observability. USP2018069988138.
  16. Sar, David R.; Sanderson, Terry M.; Theriault, Philip C.. Interceptor vehicle with extendible arms. USP2013038387536.
  17. Hufnagel, Klaus; Lambie, Benjamin. Invention relating to rotor blades, in particular for wind power installations. USP2016059353728.
  18. Martin Willi,DEX ; Siegling Hans-Friedrich,DEX ; Kuhn Marcel,DEX ; Himmel Norbert,DEX. Load carrying structure having variable flexibility. USP2001026182929.
  19. Young Kendall Gardner ; Pauletti Steven Louis. Low density flexible edge transition. USP2001016173924.
  20. Mohammed, Omer; Herr, Stefan. Method and apparatus for increasing lift on wind turbine blade. USP2012118303250.
  21. Lau Jark C. ; Lin Philip Sim. Method for stabilizing a moving low-strength sheet. USP1999035888349.
  22. Sanderson, Terry M.; Clark, Jamie W.. Methods and apparatus for adjustable surfaces. USP2010067728267.
  23. Sanderson, Terry M.; Clark, Jamie W.. Methods and apparatus for adjustable surfaces. USP2010087777165.
  24. Lutke, Kevin R.; Kutzmann, Aaron J.. Pneumatic control system for aerodynamic surfaces. USP2014078783625.
  25. Eisentraut, Rudy A.; Sanderson, Terry M.; Gowler, Brian J.. Reconfigurable wing and method of use. USP2011118056853.
  26. Hamamoto,Masaki; Ohta,Yoshiji; Hara,Keita. Rising and moving apparatus and manufacturing method thereof. USP2007057219855.
  27. Novori, Alessio; Arinci, Paolo; Lorusso, Salvatore. Rotor blade for a second stage of a compressor. USP2010087785074.
  28. Volk John Alan. Selectively rotatable and torsionally flexible aerodynamic control apparatus. USP2000076089503.
  29. Wigley, Alexander T.. Shape shifting foils. USP2018049944356.
  30. Sanderson, Terry M.. Shape-change material and method. USP2013118573535.
  31. Sar, David R.; Sanderson, Terry M.. Shape-changing structure member with embedded spring. USP2013018342457.
  32. Sar, David R.; Sanderson, Terry M.. Shape-changing structure member with embedded spring. USP2011098016249.
  33. Mueller Dietmar,DEX ; Schuermann Helmut,DEX. Skin-rib structure. USP2001016173925.
  34. Sanderson, Terry M.; Levenson, Yvonne C.; Sar, David R.. Structure with reconfigurable polymer material. USP2013028382042.
  35. Wille Robert Henry. Tail for an aircraft. USP1999095947422.
  36. Motosko, III, Stephen. Variable air foil and spoiler. USP2012028113470.
  37. Dawson, Mark H.; Wallace, Jack. Variable length wind turbine blade having transition area elements. USP2012068206107.
  38. Lutke, Kevin Reed; Kutzmann, Aaron Jonathan. Variable pitch airfoils. USP2013038393576.
  39. Lutke, Kevin Reed; Kutzmann, Aaron Jonathan. Variable pitch airfoils. USP2013018342451.
  40. Hayashi, Kentaro; Nishino, Hiroshi; Hosoya, Hiroyuki; Matsuo, Atsushi; Karikomi, Kai. Wind turbine blade and wind power generator using the same. USP2014108851857.
  41. Wilson, Megan M.. Wind turbine rotor blade with passively modified trailing edge component. USP2013088506248.
  42. Wilson, Megan M.. Wind turbine rotor blade with passively modified trailing edge component. USP2013128602732.
  43. Baker, Jonathon P.; Jackson, Kevin Lee; Mayda, Edward A.; van Dam, Cornelis P.. Wind turbine with deployable air deflectors. USP2012068192161.
  44. van Dam, Cornelis P.; Jackson, Kevin Lee. Wind turbine with gust compensating air deflector. USP2012098267654.
  45. Bray, Robert Reginald. Wingsail. USP201412D720280.
  46. Bray, Robert Reginald. Wingsail propelled boat. USP201410D714712.