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특허 상세정보

Oscillating air jets for implementing blade variable twist, enhancing engine and blade efficiency, and reducing drag, vibration, download and ir signature

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/04   
미국특허분류(USC) 244/017.13; 244/208; 244/076.R; 244/007.A; 416/042; 416/003; 416/090.A; 415/119
출원번호 US-0198800 (1998-11-24)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Stout, Uxa, Buyan & Mullins, LLP
인용정보 피인용 횟수 : 26  인용 특허 : 35
초록

A porous surface on an aircraft structure driven with oscillating positive and negative pressures is used as an active control device for attenuating negative aerodynamic interactions. The porous surfaces can be driven with positive and negative pressures either continuously or when predetermined flight conditions are present. The porous surfaces can be used on rotor blades to reduce BVI noise in descent flight conditions. The porous surfaces can be configured on rotor blades for affecting blade variable twist in accordance with various flight conditions...

대표
청구항

A porous surface on an aircraft structure driven with oscillating positive and negative pressures is used as an active control device for attenuating negative aerodynamic interactions. The porous surfaces can be driven with positive and negative pressures either continuously or when predetermined flight conditions are present. The porous surfaces can be used on rotor blades to reduce BVI noise in descent flight conditions. The porous surfaces can be configured on rotor blades for affecting blade variable twist in accordance with various flight conditions...

이 특허에 인용된 특허 (35)

  1. Hassan Ahmed A. ; Straub Friedrich K. ; Domzalski David B. ; Kennedy Dennis K.. Active blowing system for rotorcraft vortex interaction noise reduction. USP1998095813625.
  2. Tulinius Jan (Huntington Beach CA). Active flexible wing aircraft control system. USP1992015082207.
  3. Destuynder Roger (Noisy le Sec FRX) Bouttes Jacques (Paris FRX) Poisson-Quinton Philippe (Paris FRX). Active method and installation for the reduction of buffeting of the wings of an aircraft. USP1987114706902.
  4. Campbell Thomas G. (Cheshire CT). Aircraft rotor blade with passive tuned tab. USP1985044514143.
  5. Bohning Rainer (Karlsruhe DEX). Aircraft wing having a super critical profile and a venting device for reducing compression shock. USP1994085335885.
  6. O'Neil Patrick J.. Airfoil lift management device. USP1998095806808.
  7. Schlinker Robert H. (Canton CT) Kerschen Edward J. (Tuscon AZ). Airfoil noise control. USP1997035613649.
  8. Dancila D. Stefan ; Armanios Erian A.. Apparatus and method for aerodynamic blowing control using smart materials. USP1998085791601.
  9. Wilson William F. (Bedford TX). Automatic one-per-rev control system. USP1976053954229.
  10. Charles Bruce D. (Mesa AZ) Hassan Ahmed A. (Mesa AZ) Tadghighi Hormoz (Gilbert AZ) JanakiRam Ram D. (Mesa AZ) Sankar Lakshmi N. (Atlanta GA). Blade vortex interaction noise reduction techniques for a rotorcraft. USP1996125588800.
  11. Humpherson David V. (Chiselborough GB2). Circulation control aerofoils. USP1996065529458.
  12. Mangiarotty Rudolph A. (Seattle WA). Control of laminar flow in fluids by means of acoustic energy. USP1989024802642.
  13. Nordstrm Lennart (Linkping SEX). Control system having variably biased manipulatable unit. USP1986044580210.
  14. Guscott John K. (Lynnfield MA) Renner Gerard (Dorchester MA) Wendt Roger (Londonderry NH). Diaphragm type piezoelectric electroacoustic transducer. USP1980104228379.
  15. Tajima Kazushige,JPX ; Imahori Yoshio,JPX. Electroacoustic transducer. USP1998055747906.
  16. Tamura Raymond M. (218 Lagoon Dr. Honolulu HI 96819). Helicopter lifting and propelling apparatus. USP1979104169567.
  17. Zimmer Herbert (Friedrichshafen DEX). Helicopter rotor blade control. USP1989014799859.
  18. Williams John E. F. (Cambridge GB2) Lang Jack (Cambridge GB2). Low drag surface construction. USP1987094693201.
  19. 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.
  20. Lurz Werner (Hamburg DEX). Method of and apparatus for controlling the boundary layer flow over the surface of a body. USP1985054516747.
  21. Glezer Ari ; Smith Barton L. ; Trautman Mark A.. Modifications of fluid flow about bodies and surfaces with synthetic jet actuators. USP1999095957413.
  22. Azuma Akira (Kawasaki JPX). Noise reduction device for rotorcraft. USP1996105562414.
  23. Hassan Ahmed A. ; Straub Friedrich K. ; Domzalski David B.. Oscillating air jets for helicopter rotor aerodynamic control and BVI noise reduction. USP2000076092990.
  24. Domzalski David B. ; Hassan Ahmed A. ; Kennedy Dennis K.. Oscillating air jets on aerodynamic surfaces. USP1999085938404.
  25. Maeda Kyoichi (Tokyo JPX). Piezoelectric loudspeaker. USP1983054386241.
  26. Tokushima Akira (Kyoto JPX). Piezoelectric motor. USP1988114786836.
  27. Takaya Tadashi (Kyoto JPX). Piezoelectric speaker. USP1991075031222.
  28. Johnson ; Jr. Raymond G. (Orange CT) Trustee Bill L. (Jamaica NY) Fischer William C. (Monroe CT). Pneumatic control valve actuator computer control arrangement. USP1985084534702.
  29. Schmitz Frederic H. (Palo Alto CA). Rotorcraft blade-vortex interaction controller. USP1995085437419.
  30. Hwang Danny P.. Skin friction reduction by micro-blowing technique. USP1998095803410.
  31. Tsutsumi Shigeru,JPX. Sound generating device. USP1998095804906.
  32. Glezer Ari ; Allen Mark G. ; Coe David J. ; Smith Barton L. ; Trautman Mark A. ; Wiltse John W.. Synthetic jet actuator and applications thereof. USP1998065758823.
  33. Palmer Steven D. (Burlington IA). System for onboard lift analysis and apparatus therefor. USP1995105457630.
  34. Miller Robin Mihekun ; Tunkel Roman N.. Vibration-driven acoustic jet controlling boundary layer separation. USP2000086109566.
  35. Coleman, Clint; Kurth, William T.. Wind turbine rotor aileron. USP1994065320491.

이 특허를 인용한 특허 피인용횟수: 26

  1. Herr, Stefan; Gupta, Anurag; Saddoughi, Seyed Gholamali. Active circulation control of aerodynamic structures. USP2016019239039.
  2. Seifert, Avraham; Greenblatt, David; Wygnanski, Israel. Aerial vehicle controlled and propelled by oscillatory momentum generators and method of flying a vehicle. USP2004066751530.
  3. Zientek, Thomas A.; Birchette, Terrence S.; Straub, Friedrich K.. Apparatus, system, and method for pitching and twisting a blade of a rotorcraft. USP2016119487291.
  4. Calandra, Salvatore; Morgan, Keith. Cruise control FADEC logic. USP2010087774106.
  5. Hassan, Ahmed A.; Osborne, Bradley A.; Schwimley, Scott; Billman, Garry; Billman, legal representative, Mary. Dynamic bumps for drag reduction at transonic-supersonic speeds. USP2011098016245.
  6. Hartman,Peter A.; Meadowcroft,Edward T.. Engine inlet air particle separator with active flow control. USP2007117296395.
  7. Hassan, Ahmed A.; Hamilton, Brian K.; Ngo, Hieu T.. Gust alleviation/flutter suppression device. USP2004116821090.
  8. Hassan,Ahmed A.; Billman,Garry. Method and apparatus for controlling a vehicle. USP2006026994297.
  9. Saddoughi,Seyed Gholamali. Method and apparatus for modulating flow separation. USP2007047198234.
  10. Hassan, Ahmed A.; JanakiRam, Ram D.. Method and device for altering the separation characteristics of air-flow over an aerodynamic surface via intermittent suction. USP2005036866234.
  11. Hassan, Ahmed A.; JanakiRam, Ram D.; Cerchie, Dino A.. Method and device for altering the separation characteristics of flow over an aerodynamic surface via hybrid intermittent blowing and suction. USP2005056899302.
  12. Hassan, Ahmed A.; Domzalski, David B.; JanakiRam, Ram D.. Method and device for low-noise underwater propulsion. USP2005026851990.
  13. Hassan, Ahmed A.; Domzalski, David B.. Method and device for low-noise underwater propulsion and for reducing hull drag. USP2005036860770.
  14. Benito, Pedro L.; Wang, Jing. Method and system for operating a wind turbine generator. USP2011087988414.
  15. Gupta, Anurag; Miller, Scott Michael; Maeder, Thierry. Microstructures for reducing noise of a fluid dynamic structure. USP2013068460779.
  16. Seifert, Avraham; Stalnov, Oksana; Fono, Ilan; Dayan, Isaac; Troshin, Victor; Avnaim, Maor Hai; Palei, Vitali. Oscillatory vorticity generator and applications thereof. USP2014118876064.
  17. Walliser,Eric W.. Rotor wing aircraft having a bypassable radial inflow turbine. USP2009037510139.
  18. Filter, Evan J.. Rotorcraft rotor including primary pitch horns and secondary horns. USP2016109457889.
  19. Lin, Zuei-Ling. Rudder resistance reducing method. USP2014088800459.
  20. Whalen, Edward A.. Shaping a fluid cavity of a flow control actuator for creation of desired waveform characteristics. USP2015018931518.
  21. Greenblatt, David. Simultaneous multiple-location separation control. USP2009057537182.
  22. Boldrin, Clete M.; Hassan, Ahmed A.. Vernier active flow control effector. USP2012038128036.
  23. Boldrin,Clete M.; Hassan,Ahmed A.. Vernier active flow control effector. USP2007087255309.
  24. McVeigh, Michael A.; Maciolek, Robert F.. Vortex generators on rotor blades to delay an onset of large oscillatory pitching moments and increase maximum lift. USP2010077748958.
  25. Tadayon, Saied; Tadayon, Bijan; Martin, David. Wind turbine blade system with air passageway. USP2013058449255.
  26. Ferguson, Stanley D.; Fialho, Ian J.; Potter, Richard C.. Wing aerial refueling system. USP2017019533754.