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Vibration-driven acoustic jet controlling boundary layer separation

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/04   
미국특허분류(USC) 24/4207 ; 24/413.0 ; 24/420.4
출원번호 US-0257564 (1999-02-25)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 38  인용 특허 : 14
초록
▼

An acoustic jet disposed within an aerodynamic surface, such as a wing or a blade, has a resilient wall supporting a mass. Vibrations of the blade cause oscillatory pressure waves within the acoustic jet, the nozzle of which directs fluid particles having high momentum flux essentially tangentially into the boundary layer of the suction surface of the blade, the resonant cavity of the synthetic jet being replenished with particles having low momentum flux drawn from the flow in a direction normal to the surface, thereby to provide a net time averaged flo...

대표
청구항
▼

[ We claim:] [1.] A structure which vibrates when in operation, comprising:a surface forming a part of said structure and having an aerodynamic profile;a resilient membrane having a concentrated mass disposed thereon;a chamber disposed within said structure, said membrane forming a flexible wall of said chamber, said chamber being located adjacent to a boundary layer separation point of said surface; anda nozzle connecting said chamber with said surface in the vicinity of said boundary layer separation point, vibration of said structure when in operation...

이 특허에 인용된 특허 (14)

  1. Maestrello Lucio (Newport News VA). Active control of boundary layer transition and turbulence. USP1990064932610.
  2. Johnstone Edmund H. (82 Salzburg Blvd. Apt. G Columbus IN 47201). Aircraft wing vortex deflector. USP1976083974986.
  3. Ball William H. (Mercer Island WA) Syberg Jan (Kent WA). Apparatus for re-energizing boundary layer air. USP1988064749151.
  4. Mangiarotty Rudolph A. (Seattle WA). Control of laminar flow in fluids by means of acoustic energy. USP1989024802642.
  5. Fradenburgh Evan A. (Fairfield CT). Helicopter. USP1980084216924.
  6. Wygnanski Israel (4559 N. Placita de las Charcras Tucson AZ 85718). Method and apparatus for delaying the separation of flow from a solid surface. USP1993055209438.
  7. Lurz Werner (Hamburg DEX). Method of and apparatus for controlling the boundary layer flow over the surface of a body. USP1985054516747.
  8. Glezer Ari ; Smith Barton L. ; Trautman Mark A.. Modifications of fluid flow about bodies and surfaces with synthetic jet actuators. USP1999095957413.
  9. Domzalski David B. ; Hassan Ahmed A. ; Kennedy Dennis K.. Oscillating air jets on aerodynamic surfaces. USP1999085938404.
  10. Haslund Ralph L. (Mercer Island WA). Stabilized aero-optical free shear layer interface. USP1991125069397.
  11. Glezer Ari ; Allen Mark G. ; Coe David J. ; Smith Barton L. ; Trautman Mark A. ; Wiltse John W.. Synthetic jet actuator and applications thereof. USP1998065758823.
  12. Hughes Kevin A. (San Diego CA) Shieh Chih F. (San Diego CA). Turbine engine nacelle laminar flow control arrangement. USP1994035297765.
  13. Willis Mark T. (San Diego CA). Venturi enhanced airfoil. USP1991055016837.
  14. Lewis Delbert S. (Bellevue WA). Wing leading edge high lift device. USP1981084285482.

이 특허를 인용한 특허 피인용횟수: 38

  1. Herr, Stefan; Gupta, Anurag; Saddoughi, Seyed Gholamali. Active circulation control of aerodynamic structures. USP2016019239039.
  2. Vadari, Harith; Desabhatla, Sreedhar. Active control of a wind turbine blade. USP2011118057175.
  3. Saddoughi,Seyed Gholamali; Gupta,Anurag; Giguere,Philippe. Active flow modifications on wind turbine blades. USP2008067387491.
  4. Weaver, Thomas L.; Sheahan, Jr., James J.. Aerodynamically-assisted landing gear. USP2012048162255.
  5. Dunn,Shaun Stephen. Aerofoils. USP2007097264444.
  6. Gölling, Burkhard; Haucke, Frank; Bauer, Matthias; Nitsche, Wolfgang; Peltzer, Inken. Aircraft with a control device. USP2015049014877.
  7. Rogers,Ernest O.; Imber,Robin D.; Abramson,Jane S.; Donnelly,Martin J.. Dual jet emerging lift augmentation system for airfoils and hydrofoils. USP2007117290738.
  8. Sullivan, Shaun E.. Energy transfer apparatus and methods. USP2010027654095.
  9. Sullivan, Shaun E.. Energy transfer apparatus and methods. USP2010067726135.
  10. Winter, Michael. Fan nacelle flow control. USP2013098529188.
  11. Greenblatt, David; Sasson, Benyamin; Schulman, Magen. Flow control on a vertical axis wind turbine (VAWT). USP2016039279412.
  12. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2010097797944.
  13. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2014098844294.
  14. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2013018353164.
  15. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2014058726632.
  16. Winter, Michael; Jain, Ashok K.. Gas turbine engine providing simulated boundary layer thickness increase. USP2011017870721.
  17. Winter, Michael; Jain, Ashok K.. Gas turbine engine system providing simulated boundary layer thickness increase. USP2012078209953.
  18. Ahmed A. Hassan ; David B. Domzalski. Jet actuators for aerodynamic surfaces. USP2002106471477.
  19. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W.. Lift augmentation system and associated method. USP2011108033510.
  20. Jain, Ashok K.; Winter, Michael. Nacelle assembly having inlet airfoil for a gas turbine engine. USP2013048408491.
  21. Haas, Martin. Nacelle assembly having inlet bleed. USP2012068192147.
  22. Haas, Martin. Nacelle assembly with turbulators. USP2012058186942.
  23. Jain, Ashok K.. Nacelle flow assembly. USP2013128596573.
  24. Jain, Ashok K.. Nacelle flow assembly. USP2012108282037.
  25. Jain, Ashok K.. Nacelle flow assembly. USP2015049004399.
  26. Hassan, Ahmed A.; Straub, Friedrich K.; Domzalski, David B.. Oscillating air jets for implementing blade variable twist, enhancing engine and blade efficiency, and reducing drag, vibration, download and ir signature. USP2003046543719.
  27. Seifert, Avraham; Stalnov, Oksana; Fono, Ilan; Dayan, Isaac; Troshin, Victor; Avnaim, Maor Hai; Palei, Vitali. Oscillatory vorticity generator and applications thereof. USP2014118876064.
  28. Hormiere, Arnaud; Clairet, Guillaume. Passive device for generating a film of cold air in contact with an outer surface of an aircraft. USP2017109783305.
  29. Saddoughi, Seyed G.. Synthetic jet actuators. USP2004046722581.
  30. Griffin, Steven F.; Shurilla, Christopher R.. Synthetic vacuum generator. USP2017099765767.
  31. Sinha,Sumon Kumar. System and method for using a flexible composite surface for pressure-drop free heat transfer enhancement and flow drag reduction. USP2008097422051.
  32. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W.; Manley, David J.. System for aerodynamic flows and associated method. USP2009127635107.
  33. Jain, Ashok K.; Winter, Michael. Variable contour nacelle assembly for a gas turbine engine. USP2016019228534.
  34. Jain, Ashok K.; Winter, Michael. Variable contraction ratio nacelle assembly for a gas turbine engine. USP2014058727267.
  35. Jain, Ashok K.. Variable geometry nacelle assembly for a gas turbine engine. USP2012068205430.
  36. Jain, Ashok K.; Chaudhry, Zaffir A.. Variable shape inlet section for a nacelle assembly of a gas turbine engine. USP2013038402739.
  37. 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.
  38. Tadayon, Saied; Tadayon, Bijan; Martin, David. Wind turbine blade system with air passageway. USP2013058449255.

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