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Aerodynamic low drag structure

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64D-033/02   
미국특허분류(USC) 244/053B ; 181/214
출원번호 US-0567222 (1995-12-05)
우선권정보 GB-0024495 (1995-12-05)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Lyon & Lyon LLP
인용정보 피인용 횟수 : 51  인용 특허 : 9
초록
▼

Boundary layer separation at the boundary surface of an intake duct (18) of a turbofan aeroengine nacelle (12) at conditions of high incidence and high engine mass flow arises from shockwave induced pressure gradients in the boundary layer. To control separation, gaseous fluid is withdrawn from a high pressure region of the boundary layer at a downstream region of the boundary surface, conveyed within the intake duct structure (19) and discharged at an upstream region of the boundary surface into a low pressure region of the boundary layer. The intake du...

대표
청구항
▼

[ What is claimed is:] [1.] An aeroengine nacelle structure including an intake duct, comprisinga lipskin defining an intake throat leading into the intake duct and including a noise attenuation panel having a facing component part with a front face which forms a boundary surface of the intake duct and which is subjected to fluid flow over it in a boundary layer adjacent the boundary surface, the facing component part of the noise attenuation panel having a plurality of flow apertures which extend through the facing component part at a downstream region ...

이 특허에 인용된 특허 (9)

  1. Bohning Rainer (Karlsruhe DEX). Aircraft wing having a super critical profile and a venting device for reducing compression shock. USP1994085335885.
  2. Jungclaus Gnther (Munich DEX) Krohn Ernst-Otto (Lohmar DEX). Device for preventing buzz in supersonic intakes of air-breathing reaction engines, particularly, ram jet engines. USP1985034502651.
  3. DeCoux Steven P. (Long Beach CA). Laminar flow control apparatus for aerodynamic surfaces. USP1994115366177.
  4. Barnwell Richard (Newport News VA) Bushnell Dennis (Wicomico VA) Nagamatsu Henry T. (Schenectady NY) Bahi Lakhdar (Troy NY) Ross Janet (Burbank CA). Passive drag control of airfoils at transonic speeds. USP1985064522360.
  5. Stallings Jr. Robert L. (Yorktown VA) Wilcox ; Jr. Floyd J. (Hampton VA). Passive venting technique for shallow cavities. USP1989094863118.
  6. Hartwich Peter M. (Newport News VA). Porous airfoil and process. USP1992125167387.
  7. Miller Brent A. (Olmsted Falls OH). Self stabilizing sonic inlet. USP1979054154256.
  8. Hughes Kevin A. (San Diego CA) Shieh Chih F. (San Diego CA). Turbine engine nacelle laminar flow control arrangement. USP1994035297765.
  9. Rose Philip M. (Chula Vista CA) Mikolajczak Alojzy A. (Coronado CA). Turbofan duct with noise suppression and boundary layer control. USP1988064749150.

이 특허를 인용한 특허 피인용횟수: 51

  1. Foster, Peter F. W.. Air flow passage liner. USP2014048702378.
  2. Boulet, Nicolas; Affortit, Sébastien. Air inlet for aircraft propulsion unit having a structure resistant to excess pressure and a process for repairing an air inlet of an aircraft propulsion unit. USP2015069061769.
  3. Bensilum, Stephane Emmanuel Daniel. Air inlet of an aeroengine having unducted pusher propellers. USP2014018622340.
  4. Porte Alain,FRX. Air intake structure for aircraft engine. USP2001126328258.
  5. Porte,Alain; Andre,Robert. Air intake structure for aircraft engine. USP2008067383679.
  6. Dezeustre, Nicolas; Caruel, Pierre; Gonidec, Patrick; Boileau, Patrick. Air intake structure for turbojet engine nacelle. USP2015109151225.
  7. Shutrump, Jeffrey D.. Aircraft engine inlet having zone of deformation. USP2010057721525.
  8. Shutrump, Jeffrey D.. Aircraft engine inlet having zone of deformation. USP2013058438857.
  9. Moe,Jeffrey W.; Byrne,Stuart J.; James,Norman J.; Burdisso,Ricardo A.. Assembly and method for aircraft engine noise reduction. USP2006057047725.
  10. Williams,Nicholas A.. Composite muffler for use with airborne auxiliary power unit. USP2008107431125.
  11. Welch John M. ; Benton William E. ; Lobsinger Michael R.. Engine nacelle outer cowl panel with integral track fairings. USP2000106129311.
  12. Arcas Noe ; Hutto Frederick M. ; Parente Charles A.. Extended reaction acoustic liner for jet engines and the like. USP2000106135238.
  13. Arcas Noe ; Hutto Frederick M. ; Parente Charles A.. Extended reaction acoustic liner for jet engines and the like. USP1999075923003.
  14. Winter, Michael. Fan nacelle flow control. USP2013098529188.
  15. Harper, Cedric B.; Humphries, Neil. Fan section. USP2013118578697.
  16. Hanson, Russell B.. Fan variable area nozzle for a gas turbine engine fan nacelle. USP2010057721551.
  17. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2010097797944.
  18. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2014098844294.
  19. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2013018353164.
  20. Morford, Stephen A.; Larkin, Michael J.. Gas turbine engine having slim-line nacelle. USP2014058726632.
  21. Winter, Michael; Jain, Ashok K.. Gas turbine engine providing simulated boundary layer thickness increase. USP2011017870721.
  22. Winter, Michael; Jain, Ashok K.. Gas turbine engine system providing simulated boundary layer thickness increase. USP2012078209953.
  23. Alletzhauser, Eric W.. Gas turbine engine with fan variable area nozzle having a rotational valve system. USP2011067966827.
  24. Do, Logan H.; Krystowski, Edward A.. Gas turbine engine with variable area fan nozzle. USP2013108549834.
  25. Proscia,William; Jones,Christopher D.; Patrick,William P.. High admittance acoustic liner. USP2008037337875.
  26. Lee, Phillip. Installable graffiti and tagging inhibiting panels. USP2017049624674.
  27. Cloft, Thomas G.; Wiley, Richard H.. Integral suction device with acoustic panel. USP2010087766280.
  28. Cloft, Thomas G.; Wiley, Richard H.. Integral suction device with acoustic panel. USP2013068459597.
  29. Tindell Runyon H. ; Parente Charles A.. Low drag inlet design using injected duct flow. USP1999085934611.
  30. Kowal, Adam; Hein, Jeff M.; Wilcox, David E.. Monolithic acoustically-treated composite structures and methods for fabricating the same. USP2014048685302.
  31. Kowal, Adam; Hein, Jeffrey; Wilcox, David E.. Monolithic acoustically-treated composite structures and methods for fabricating the same. USP2016109469390.
  32. Jain, Ashok K.; Winter, Michael. Nacelle assembly having inlet airfoil for a gas turbine engine. USP2013048408491.
  33. Haas, Martin. Nacelle assembly having inlet bleed. USP2012068192147.
  34. Haas, Martin. Nacelle assembly with turbulators. USP2012058186942.
  35. Jain, Ashok K.. Nacelle flow assembly. USP2013128596573.
  36. Jain, Ashok K.. Nacelle flow assembly. USP2012108282037.
  37. Jain, Ashok K.. Nacelle flow assembly. USP2015049004399.
  38. Atassi, Oliver V.. Nacelle with porous surfaces. USP2015038974177.
  39. Zysman, Steven H.; Lord, Wesley K.; Miller, Robert M.; Atassi, Oliver V.. Passive boundary layer bleed system for nacelle inlet airflow control. USP2017059644535.
  40. Tiwari, Sean; Weaver, Luby. Perforated surface for suction-type laminar flow control. USP20180610000277.
  41. Kuriyama, Yutaka. Precision surface plate. USP2011027882891.
  42. Gerber, Martin; Syassen, Freerk. Profile plate portion for use as an outer wall of a flow body, method for manufacturing a profile plate portion and flow body component comprising a suction-extraction device for fluid. USP2016129511848.
  43. Porte Alain,FRX. Protective device for a jet engine air inlet cowl equipped with a deicing system. USP2001066241189.
  44. Thomas, Christian; Gerstner, Ralph. Sandwich panel for sound absorption. USP2010067743884.
  45. Winter, Michael; Hanson, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2009127637095.
  46. Winter, Michael; Hanson, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2014078769925.
  47. Winter, Michael; Harison, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2014088806850.
  48. Jain, Ashok K.; Winter, Michael. Variable contour nacelle assembly for a gas turbine engine. USP2016019228534.
  49. Jain, Ashok K.; Winter, Michael. Variable contraction ratio nacelle assembly for a gas turbine engine. USP2014058727267.
  50. Jain, Ashok K.. Variable geometry nacelle assembly for a gas turbine engine. USP2012068205430.
  51. Jain, Ashok K.; Chaudhry, Zaffir A.. Variable shape inlet section for a nacelle assembly of a gas turbine engine. USP2013038402739.

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