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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Tangentially directed acoustic jet controlling boundary layer

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-023/00   
미국특허분류(USC) 244/204; 244/130; 244/207; 244/208; 244/0010N
출원번호 US-0257565 (1999-02-25)
발명자 / 주소
  • Duane C. McCormick
  • Daniel L. Gysling
출원인 / 주소
  • United Technologies Corporation
인용정보 피인용 횟수 : 35  인용 특허 : 13
초록
▼

The nozzle of an acoustic jet directs high momentum flux gas particles essentially tangentially into the boundary layer of the flow in a diffuser, an engine air inlet, a jet engine gas flow path or on the suction surface of an airfoil, the gas particles in the chamber of the tangential acoustic jet being replenished with approaching low momentum flux particles drawn from the gas flow in a direction normal to the surface, thereby to provide a net time-averaged flow of increased momentum flux particles to defer the onset of boundary layer separation and/or...

대표
청구항
▼

1. A gas flow system, comprising:a gas flow path adjacent a surface, gas flowing within said path having a boundary layer adjacent said surface; a chamber; a gas pressure oscillation generator for providing gas in said chamber having significant oscillatory pressure components at substantially a selected frequency; and a gas passage interconnecting said chamber with said gas flow path, said passage directed into said flow at a small acute angle with respect to said surface so that said chamber, said gas pressure oscillation generator, and said passage fo...

이 특허에 인용된 특허 (13)

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

이 특허를 인용한 특허 (35)

  1. Hurwitz, Wayne; Ochs, Stuart S., Active flow control for nacelle inlet.
  2. Saddoughi,Seyed Gholamali; Gupta,Anurag; Giguere,Philippe, Active flow modifications on wind turbine blades.
  3. Sammy, Johann Quincy, Adaptive control ducted compound wind turbine.
  4. Marshall, Jeffrey S.; Chen, Di; Vachon, Nicholas Mario; Hitt, Darren; Wu, Junru, Aeroacoustic duster.
  5. Gölling, Burkhard; Haucke, Frank; Bauer, Matthias; Nitsche, Wolfgang; Peltzer, Inken, Aircraft with a control device.
  6. Pietraszkiewicz, Edward F.; Klinefelter, Kevin J.; Kohli, Atul; Coons, Todd R., Article having diffuser holes and method of making same.
  7. Rolling, August J; Heiser, William H; Wisniewski, Charles F, Augmented propulsion system with boundary layer suction and wake blowing.
  8. Burrus, David Louis; Taylor, Jack Rogers, Combustor inlet diffuser with boundary layer blowing.
  9. Suciu, Gabriel L.; Kramer, Stephen K.; Chandler, Jesse M., Decoupled gas turbine engine.
  10. Rogers,Ernest O.; Imber,Robin D.; Abramson,Jane S.; Donnelly,Martin J., Dual jet emerging lift augmentation system for airfoils and hydrofoils.
  11. Winter, Michael, Fan nacelle flow control.
  12. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
  13. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
  14. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
  15. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
  16. Winter, Michael; Jain, Ashok K., Gas turbine engine providing simulated boundary layer thickness increase.
  17. Winter, Michael; Jain, Ashok K., Gas turbine engine system providing simulated boundary layer thickness increase.
  18. Sinha, Neeraj; Arunajatesan, Srinivasan, Modular flow control actuator.
  19. Jain, Ashok K.; Winter, Michael, Nacelle assembly having inlet airfoil for a gas turbine engine.
  20. Haas, Martin, Nacelle assembly having inlet bleed.
  21. Haas, Martin, Nacelle assembly with turbulators.
  22. Jain, Ashok K., Nacelle flow assembly.
  23. Jain, Ashok K., Nacelle flow assembly.
  24. Jain, Ashok K., Nacelle flow assembly.
  25. Blomeley, Lewis E., Roadable aircraft with collapsible wings and ductless fan.
  26. Gerlach, David W.; McCormick, Duane C., Sound attenuating heat exchanger for an internal combustion engine.
  27. Gupta, Anurag; Graziosi, Paolo; Mani, Ramani, System and method for actively changing an effective flow-through area of an inlet region of an aircraft engine.
  28. Orosa, John; Montgomery, Matthew, Turbine exhaust diffuser with a gas jet producing a coanda effect flow control.
  29. Orosa, John, Turbine exhaust diffuser with region of reduced flow area and outer boundary gas flow.
  30. Winter, Michael, Turbofan engine with variable bypass nozzle exit area and method of operation.
  31. Surply, Thierry; Bourdeau, Christophe, Turbojet nacelle and method for controlling separation in a turbojet nacelle.
  32. Jain, Ashok K.; Winter, Michael, Variable contour nacelle assembly for a gas turbine engine.
  33. Jain, Ashok K.; Winter, Michael, Variable contraction ratio nacelle assembly for a gas turbine engine.
  34. Jain, Ashok K., Variable geometry nacelle assembly for a gas turbine engine.
  35. Jain, Ashok K.; Chaudhry, Zaffir A., Variable shape inlet section for a nacelle assembly of a gas turbine engine.

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