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특허 상세정보

Dynamic bumps for drag reduction at transonic-supersonic speeds

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/08   
미국특허분류(USC) 244/2001; 244/2041; 244/208; 244/130; 244/0010N
출원번호 US-0583140 (2006-10-18)
등록번호 US8016245 (2011-08-30)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Harness, Dickey & Pierce, P.L.C.
인용정보 피인용 횟수 : 6  인용 특허 : 25
초록

A system for reducing overall drag of a mobile platform includes a surface on which an airflow forms a boundary layer and a generally normal shockwave. The airflow is at a first velocity that is one of transonic and supersonic. An oscillating jet injects and extracts a jet flow through the surface. The jet flow is at a second velocity that is substantially less than the first velocity. A recirculation region is upstream of the normal shockwave and is disposed at least partially in the boundary layer. The recirculation region is established at least by th...

대표
청구항

What is claimed is: 1. A system for reducing overall drag of an airborne mobile platform, the system comprising:a surface having a spanwise length on which an airflow forms a boundary layer and a generally normal shockwave, wherein said airflow is at a first velocity that is one of transonic and supersonic;a plurality of oscillating jets formed in an array that each at least one of inject and extract a jet flow through said surface, wherein each said jet flow is at a second velocity that is substantially less than said first velocity;a controller that co...

이 특허에 인용된 특허 (25)

  1. Hassan Ahmed A. ; Straub Friedrich K. ; Domzalski David B. ; Kennedy Dennis K.. Active blowing system for rotorcraft vortex interaction noise reduction. USP1998095813625.
  2. Prince, Troy; Lisy, Frederick J.; Patel, Mehul P.; DiCocco, Jack M.; Carver, Reed; Schmidt, Robert N.. Aircraft and missile forebody flow control device and method of controlling flow. USP2004026685143.
  3. Collett Edward,GBX. Aircraft wing leading edge high lift device with suction. USP2000106135395.
  4. Ashill Patrick R. (Bedfordshire GB2) Fulker John L. (Bedfordshire GB2). Airfoil with variable geometry expansion surface. USP1995075433404.
  5. Hassan, Ahmed A.; Hamilton, Brian K.; Ngo, Hieu T.. Gust alleviation/flutter suppression device. USP2004116821090.
  6. Wake Brian E. ; Egolf T. Alan ; Lorber Peter F. ; Landgrebe Anton J.. Half-plow vortex generators for rotor blades for reducing blade-vortex interaction noise. USP1998085788191.
  7. Ahmed A. Hassan ; David B. Domzalski. Jet actuators for aerodynamic surfaces. USP2002106471477.
  8. Byung-Hun Kim ; David R. Williams. Large amplitude pneumatic oscillator. USP2002056390116.
  9. Hassan, Ahmed A.; Domzalski, David B.; Charles, Bruce Dean; JanakiRam, Ram Damaraju. Linear electromagnetic zero net mass jet actuator. USP2004036713901.
  10. Payne Daniel H. ; Schmitt Leonard C.. Management system for documents stored electronically. USP2000076092090.
  11. Hassan,Ahmed A.; Billman,Garry. Method and apparatus for controlling a vehicle. USP2006026994297.
  12. 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.
  13. 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.
  14. Ari Glezer ; Mark G. Allen. Micromachined synthetic jet actuators and applications thereof. USP2002106457654.
  15. Glezer, Ari; Amitay, Michael. Modification of fluid flow about bodies and surfaces through virtual aero-shaping of airfoils with synthetic jet actuators. USP2003116644598.
  16. Glezer Ari ; Smith Barton L. ; Trautman Mark A.. Modifications of fluid flow about bodies and surfaces with synthetic jet actuators. USP1999095957413.
  17. Hassan Ahmed A. ; Straub Friedrich K. ; Domzalski David B.. Oscillating air jets for helicopter rotor aerodynamic control and BVI noise reduction. USP2000076092990.
  18. 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.
  19. Hassan Ahmed A. ; Tadghighi Hormoz ; Janakiram Ram D.. Oscillating air jets for reducing HSI noise. USP2001056234751.
  20. Domzalski David B. ; Hassan Ahmed A. ; Kennedy Dennis K.. Oscillating air jets on aerodynamic surfaces. USP1999085938404.
  21. McLean,James D.; Witkowski,David P.; Campbell,Richard L.. Slotted aircraft wing. USP2006057048235.
  22. Bilanin Alan J. ; Quackenbush Todd R.. System and method of vortex wake control using vortex leveraging. USP2000036042059.
  23. Page Mark A. (Cypress CA). Trapped vortex cavity. USP1991105054720.
  24. Ng T. Terry. Vortex generation for control of the air flow along the surface of an airfoil. USP2001106302360.
  25. Boppe, Charles W.; Harvie, Stuart G.. Wing tip flow control. USP1983054382569.