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Active blowing system for rotorcraft vortex interaction noise reduction 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B64C-027/00
출원번호 US-0727980 (1996-10-09)
발명자 / 주소
  • Hassan Ahmed A.
  • Straub Friedrich K.
  • Domzalski David B.
  • Kennedy Dennis K.
출원인 / 주소
  • McDonnell Douglas Helicopter Company
대리인 / 주소
    Stout
인용정보 피인용 횟수 : 62  인용 특허 : 0

초록 ▼

A pressurized porous surface near the leading edge of a rotorcraft blade, is designed to be used as an active control device which alleviates the aerodynamics of blade vortex interactions (BVI) and thus the impulsive BVI noise levels and signature. The pressurized porous surface can be actuated on a

대표청구항 ▼

[ What is claimed is:] [1.] An active control device for reducing blade-vortex-interaction (BVI) noise generated by a rotorcraft having a rotor blade including an interior, a tip end, a root end, a leading edge, a trailing edge, an upper surface, a lower surface, a radius, and a chord, the rotor bla

이 특허를 인용한 특허 (62)

  1. Jameson, Stephen M.; Boesch, Brian P.; Allen, Edward H., Active maple seed flyer.
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  2. Jameson, Stephen M.; Boesch, Brian P.; Allen, Edward H., Active maple seed flyer.
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  3. Jameson, Stephen M.; Boesch, Brian P.; Allen, Edward H., Active maple seed flyer.
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  4. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W., Active systems and methods for controlling an airfoil vortex.
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  5. Huang, Xingzhong, Active vortex control with moveable jet.
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  6. Kjellgren, Per; Fredriksson, Sam, Aerodynamic properties of ground vehicles.
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  7. Grove,Graham Bond, Aerofoil arrangement.
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  8. Dunn,Shaun Stephen, Aerofoils.
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  9. Meister, Juergen, Aircraft component exposed to streaming surrounding air.
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  10. Powell, Arthur G.; Vijgen, Paul M., Apparatus and method for passive purging of micro-perforated aerodynamic surfaces.
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  11. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger; Leopold, Donald, Apparatus and method for the control of trailing wake flows.
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  12. Shmilovich,Arvin; Yadlin,Yoram; Clark,Roger; Leopold,Donald, Apparatus and method for the control of trailing wake flows.
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  13. Rupp, Peter L.; Parikh, Pradip G.; Ng, Lian L.; Vijgen, Paul M., Apparatus and methods for extending hybrid laminar flow control.
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  14. Enthammer, Walter, Blade for a turbomachine.
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  15. Lorber Peter F. ; Lord Wesley K., Centrifugal air flow control.
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  16. Brant H. Maines, Controlled passive porosity systems to mitigate cavitation.
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  17. Smith, Jeffrey P., Directed gas systems for improving aerodynamics of a vehicle in cross wind conditions.
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  18. Hassan, Ahmed A.; Osborne, Bradley A.; Schwimley, Scott; Billman, Garry; Billman, legal representative, Mary, Dynamic bumps for drag reduction at transonic-supersonic speeds.
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  19. Graziosi, Paolo; Kirtley, Kevin; Mani, Ramani, Fluidic chevrons and configurable thermal shield for jet noise reduction.
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  20. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
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  21. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
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  22. Morford, Stephen A.; Larkin, Michael J., Gas turbine engine having slim-line nacelle.
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  23. Winter, Michael; Jain, Ashok K., Gas turbine engine system providing simulated boundary layer thickness increase.
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  24. Hassan, Ahmed A.; Hamilton, Brian K.; Ngo, Hieu T., Gust alleviation/flutter suppression device.
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  25. Zhu, Xiaoyi, Helicopter and aircraft power device.
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  26. Daniel W. Banks ; Henry L. Kelley, Helicopter tail boom with venting for alleviation and control of tail boom aerodynamic loads and method thereof.
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  27. Scott, Mark W.; Gatto, Stephen M., High speed compound rotary wing aircraft.
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  28. Ahmed A. Hassan ; David B. Domzalski, Jet actuators for aerodynamic surfaces.
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  29. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W., Lift augmentation system and associated method.
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  30. Hassan, Ahmed A.; Domzalski, David B.; Charles, Bruce Dean; JanakiRam, Ram Damaraju, Linear electromagnetic zero net mass jet actuator.
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  31. Hassan,Ahmed A.; Billman,Garry, Method and apparatus for controlling a vehicle.
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  32. Hassan, Ahmed A.; Domzalski, David B.; JanakiRam, Ram D., Method and device for low-noise underwater propulsion.
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  33. Hassan, Ahmed A.; Domzalski, David B., Method and device for low-noise underwater propulsion and for reducing hull drag.
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  34. Betzina, Mark D.; Nguyen, Khanh Q., Method and system for active noise control of tiltrotor aircraft.
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  35. Scott, Mark W., Mission adaptive rotor blade.
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  36. van der Westhuizen, Jacob Johannes, Mission-adaptive rotor blade with circulation control.
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  37. van der Westhuizen, Jacob Johannes, Mission-adaptive rotor blade with circulation control.
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  38. Al-Garni, Ahmed Z.; Al-Qutub, Amro M., Movable surface plane.
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  39. Jain, Ashok K.; Winter, Michael, Nacelle assembly having inlet airfoil for a gas turbine engine.
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  40. Haas, Martin, Nacelle assembly having inlet bleed.
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  41. Haas, Martin, Nacelle assembly with turbulators.
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  42. Jain, Ashok K., Nacelle flow assembly.
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  43. Jain, Ashok K., Nacelle flow assembly.
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  44. Jain, Ashok K., Nacelle flow assembly.
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  45. Rose, Marco; Willer, Lars, Noise-reduced turbomachine.
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  46. 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.
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  47. Reckzeh, Daniel; Goelling, Burkhard; Lengers, Matthias, Surface element for an aircraft, aircraft and method for improving high-lift generation on a surface element.
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  48. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W.; Manley, David J., System for aerodynamic flows and associated method.
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  49. Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W.; Leopold, Donald H., Systems and methods for destabilizing an airfoil vortex.
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  50. Lewis, Michael S.; Meserole, Jere S.; Dunn, Michael J.; Tillotson, Brian J., Systems and methods for tracing aircraft vortices.
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  51. Lewis, Michael S.; Meserole, Jere S.; Dunn, Michael J.; Tillotson, Brian J., Systems and methods for tracing aircraft vortices.
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  52. Lewis, Michael S.; Meserole, Jere S.; Dunn, Michael J.; Tillotson, Brian J., Systems and methods for tracing aircraft vortices.
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  53. Lorber Peter F., Technique for providing a signal for controlling blade vortex interaction noise of a rotorcraft.
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  54. Zuteck, Michael D.; Zalusky, Leigh; Lees, Paul, Turbine blades and systems with forward blowing slots.
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  55. Zuteck, Michael D.; Zalusky, Leigh; Lees, Paul, Turbine blades and systems with forward blowing slots.
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  56. Remington Paul J. ; Coney William B. ; Curtis Alan Robert Douglas, Use of flow injection and extraction to control blade vortex interaction and high speed impulsive noise in helicopters.
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  57. Jain, Ashok K.; Chaudhry, Zaffir A., Variable shape inlet section for a nacelle assembly of a gas turbine engine.
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  58. Boldrin, Clete M.; Hassan, Ahmed A., Vernier active flow control effector.
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  59. Boldrin,Clete M.; Hassan,Ahmed A., Vernier active flow control effector.
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  60. Wygnanski, Israel J., Vertical axis wind turbine.
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  61. McVeigh, Michael A.; Maciolek, Robert F., Vortex generators on rotor blades to delay an onset of large oscillatory pitching moments and increase maximum lift.
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  62. Reckzeh, Daniel; Goelling, Burkhard; Lengers, Matthias, Wing for an aircraft, aircraft and method for reducing aerodynamic drag and improving maximum lift.
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