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특허 상세정보

System and method for improved rotor tip performance

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/467   
미국특허분류(USC) 244/017.25; 416/024; 244/017.11
출원번호 UP-0752791 (2007-05-23)
등록번호 US-7757992 (2010-08-09)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Lee & Hayes, PLLC
인용정보 피인용 횟수 : 3  인용 특허 : 16

Embodiments of systems and methods for enhancing the performance of rotary wing aircraft through reduced torque, noise and vibration are disclosed. In one embodiment, a method includes configuring the rotorcraft in a selected flight condition, communicating input signals to a control system operable to position sails coupled to tips of blades of a rotor assembly, processing the input signals according to a constraint condition to generate sail positional information, and transferring the sail positional information to the sail. Alternately, input signals...


What is claimed is: 1. A method for configuring a rotor blade in a rotary wing aircraft, comprising: selecting a flight condition; configuring the rotor blade to the selected flight condition; receiving a control input generated from a sensing device installed in the rotary wing aircraft; determining, based on the control input, an orientation of a sail coupled to a tip of the rotor blade, at least a portion of the sail extending beyond an axis that extends along a trailing edge of the rotor blade to an outboard edge of the sail; and moving the sail to ...

이 특허에 인용된 특허 (16)

  1. Kota,Sridhar; Hetrick,Joel A.. Adaptive compliant wing and rotor system. USP2008067384016.
  2. Goodson Kenneth W. (Rte. 4 ; Box 389 Mt. Olive NC 28365). Airfoil. USP1987064671473.
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  4. Clark Walter Dennis. Augmented wing tip drag flap. USP2001056227487.
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  6. Pelrine, Ronald E.; Kornbluh, Roy D.. Electroactive polymer devices. USP2003046545384.
  7. Jenkins Michael W. (Marietta GA). Flight control mechanism for airplanes. USP1981014247063.
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  9. Spillman John J. (Bedford GB2). Fluid stream deflecting members for aircraft bodies or the like. USP1979104172574.
  10. Hieu T. Ngo ; Lisa E. Barlow. Lifting surface with active variable tip member and method for influencing lifting surface behavior therewith. USP2002056394397.
  11. Takanori Tsukahara JP; Masahiro Obukata JP. Rotary blade of helicopter. USP2002106467732.
  12. Wolfgang Brix DE. Subsonic aircraft with backswept wings and movable wing tip winglets. USP2002026345790.
  13. Ulrich La Roche CH; Lucas La Roche CH. Wing comprising a distal wing grid. USP2002086431499.
  14. Santos Jonathan (2902 Tapered La. Bowie MD 20715). Wing tip airfoils. USP1986064595160.
  15. La Roche Ulrich,CHX. Wing with a wing grid as the end section. USP1998105823480.
  16. Goldhammer Mark I. (Bellevue WA) Schippers Karel A. (Renton WA). Wing/winglet configurations and methods for aircraft. USP1994015275358.