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특허 상세정보

Plasma enhanced riblet

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/00   
미국특허분류(USC) 244/205;
출원번호 US-0477760 (2009-06-03)
등록번호 US-8220754 (2012-07-17)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Bracewell & Giuliani LLP
인용정보 피인용 횟수 : 6  인용 특허 : 16
초록

An object moving through a fluid uses plasma to keep turbulent mixing vortices associated with turbulent air away from the majority of the surface of the object. The plasma may be used to enhance physical riblets, or the plasma may create a virtual riblet.

대표
청구항

1. An apparatus for reducing friction drag on a vehicle, comprising: a surface for mounting to a vehicle in a position for moving through a fluid;a plurality of ridges on the surface extending in a direction of fluid flow, each having a peak;a plurality of valleys separating the ridges, wherein the width of the valley is less than the streamwise width of a spinning vortex generated by the surface, the spinning vortex having an axis of rotation that is generally parallel to the direction of fluid flow;a first electrode attached to the ridge;a second elect...

이 특허에 인용된 특허 (16)

  1. Raskob ; Jr. Anthony William. Active turbulence control technique for drag reduction. USP1999055901928.
  2. Meng James C. S. (Portsmouth RI). Active turbulence control using microelectrodes, permanent magnets in microgrooves. USP1994115359951.
  3. Snarski Stephen R.. Device for interactive turbulence control in boundary layers. USP1999085941481.
  4. Marentic Francis J. (St. Paul MN) Morris Terry L. (St. Paul MN). Drag reduction article. USP1992075133516.
  5. Karniadakis, George Em; Breuer, Kenneth; Symeonidis, Vasileios. Method and apparatus for reducing turbulent drag. USP2003026520455.
  6. Blackwelder Ron F. (30531 Rue Langlois Rancho Palos Verdes CA 90274) Gad-el-Hak Mohamed (15275 Hunting Ridge Trail Granger IN 46530). Method and apparatus for reducing turbulent skin friction. USP1990064932612.
  7. Miller, Paul A.; Aragon, Ben P.. Method for generating surface plasma. USP2003056570333.
  8. Meng James C. S.. Micro-electrode and magnet array for microturbulence control. USP1999085934622.
  9. Enloe,Carl L.; McLaughlin,Thomas E.; Jumper,Eric J.; Corke,Thomas C.. Single dielectric barrier aerodynamic plasma actuation. USP2008067380756.
  10. Paul D. McClure. Streamwise variable height riblets for reducing skin friction drag of surfaces. USP2002026345791.
  11. Bechert Dietrich W.,DEX. Surface for a wall subject to a turbulent flow showing a main direction of flow. USP1999105971326.
  12. Drews Hilbert F. P.. Surface modification apparatus and method for decreasing the drag or retarding forces created by fluids flowing across a. USP1999115988568.
  13. Malmuth, Norman; Fedorov, Alexander. Surface plasma discharge for controlling leading edge contamination and crossflow instabilities for laminar flow. USP2004106805325.
  14. Scott,Simon J; Johnson,Graham A; Thornton,Edward. Turbulent flow drag reduction. USP2006067066431.
  15. Scott,Simon J; Johnson,Graham A; Thornton,Edward. Turbulent flow drag reduction. USP2006037017863.
  16. Hirschel Ernst H. (Zorneding DEX) Fleckenstein Hubert (Grasbrunn DEX) Thiede Peter (Ganderkesee DEX). Wall with a drag reducing surface and method for making such a wall. USP1990034907765.