Application of conformal sub boundary layer vortex generators to a foil or aero/ hydrodynamic surface

a sub-border layer and generator technology, applied in the field of aero/hydrodynamic surfaces, can solve the problems of adverse effects of the resultant flow, achieve the effects of reducing the onset of the tip vortex rollup, and improving the lift and drag ratio
US20110006165A1Inactive Publication Date: 2011-01-13IRELAND PETER
70 Cites 75 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
IRELAND PETER
Publication Date
2011-01-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A method of improving aerodynamic performance of foils by the application of conformal, low drag vortex generators. A film of erosion protection material or other conformal material is placed on the foil to provide a medium for the incorporation of planform edge vortex generators. The form edge is shaped to achieve submerged vortex generating shapes of chevron or ogival planforms, extending primarily chordwise on the foil surface. The vortex generators promote improved boundary layer dynamics by mixing free stream flow into the boundary layer while minimising separation and fluid losses. At the trailing edge, the shape formed with the chevrons applied apex forward, acts as a vented gurney tab series and additionally as disruptors to the Von Karman Street wake, delaying sheet rollup into the tip vortice.
Need to check novelty before this filing date? Find Prior Art

Description

RELATED APPLICATIONS

[0001] The present application is a continuation-in-part application of U.S. provisional patent application, Ser. No. 61224481, filed Oct. 7, 2009, for ELASTOMERIC VORTEX GENERATORS, by Peter S. Ireland, included by reference herein and for which benefit of the priority date is hereby claimed.

[0002] Elastomeric Vortex Generator Provisional patent, Ireland P S, of 10 Jul. 2009. (EFS ID 5676629 Application Number 61224481 Confirmation Number 2708 Title Elastomeric Vortex Generator(s) First Named Inventor Peter Stephen Ireland)FIELD OF THE INVENTION

[0003] The present invention relates to the addition of low drag fully submerged conformal vortex generators to a surface in relative motion to a Newtonian fluid and, more particularly, to aeronautical and marine surfaces, blades, rotors, and appendages having a boundary layer with fluid flow across such surface.BACKGROUND OF THE INVENTION

[0004] Performance of a foil or surface in a flow of fluid such as air or water is criti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More