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특허 상세정보

Oscillating air jets on aerodynamic surfaces

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/04   
미국특허분류(USC) 416/091 ; 416/090A ; 416/03 ; 416/042 ; 416/500 ; 415/119 ; 244/130 ; 244/199 ; 244/204
출원번호 US-0869372 (1997-06-05)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Stout, Uxa, Buyan & Mullins, LLPStout
인용정보 피인용 횟수 : 61  인용 특허 : 17
초록

An active control device for use on an aerodynamic structure is provided. The aerodynamic structure includes an outer aerodynamic skin and an interior volume, wherein the outer aerodynamic skin surrounds the interior volume. The active control device includes at least one aperture disposed on the outer aerodynamic skin and a diaphragm disposed in the interior volume of the aerodynamic structure. The at least one aperture connects the outer aerodynamic skin to the interior volume, and the diaphragm in the interior volume is movable between a first positio...

대표
청구항

[ We claim:] [1.] An active control device for reducing blade-vortex-interaction (BVI) noise generated by a rotorcraft, the active control device being adapted to be installed into a rotor blade of the rotorcraft, the rotor blade having a skin forming an aerodynamic surface of the rotor blade and surrounding an inner volume within the rotor blade, the active control device comprising:a diaphragm disposed within the inner volume, the diaphragm having an outer periphery and an inner periphery, the outer periphery being adapted to be coupled to the skin of ...

이 특허에 인용된 특허 (17)

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  9. Guscott John K. (Lynnfield MA) Renner Gerard (Dorchester MA) Wendt Roger (Londonderry NH). Diaphragm type piezoelectric electroacoustic transducer. USP1980104228379.
  10. Tajima Kazushige,JPX ; Imahori Yoshio,JPX. Electroacoustic transducer. USP1998055747906.
  11. Meier Hans U. (Gttingen DEX) Maier Alois (Gttingen DEX) de Zhou Ming (Nanjing CNX). Method and apparatus for influencing a laminar turbulent boundary layer transition on bodies in flow. USP1991024989810.
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  13. Maeda Kyoichi (Tokyo JPX). Piezoelectric loudspeaker. USP1983054386241.
  14. Tokushima Akira (Kyoto JPX). Piezoelectric motor. USP1988114786836.
  15. Takaya Tadashi (Kyoto JPX). Piezoelectric speaker. USP1991075031222.
  16. Tsutsumi Shigeru,JPX. Sound generating device. USP1998095804906.
  17. Coleman, Clint; Kurth, William T.. Wind turbine rotor aileron. USP1994065320491.

이 특허를 인용한 특허 피인용횟수: 61

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  7. Wygnanski Israel,ILX ; Greenblatt David,ILX ; Seifert Avi,ILX. Airfoil with dynamic stall control by oscillatory forcing. USP2001076267331.
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