F - Mech Eng,Light,Heat,Weapons – 15 – D
Patent
F - Mech Eng,Light,Heat,Weapons
15
D
F15D 1/12 (2006.01) B64C 23/00 (2006.01)
Patent
CA 2147968
2147968 9410032 PCTABS00032 The boundary layer of a fluid travelling in a mean-flow direction relative to a surface of a wall (100) of a body is controlled by generating in the fluid a magnetic field B B7 (103) having flux lines parallel to the surface of the wall and an electric current density J B7 (109) traversing the magnetic flux lines in the fluid to form a control region. An electrolyte or other conductivity-enhancing material (13) is introduced into the flow to provide a conductivity gradient in the fluid flow in the near-wall region. The magnetic field B B7 (103) and the electric current density J B7 (109) create in the control region a force J B7 X B B7 (131) having a component normal to the surface of the wall that because of the conductivity gradient in the fluid flow near the surface can stabilize or destabilize flow in the boundary layer. A plurality of such control regions are arranged in an array of control tiles that can be individually actuated to reduce the power required to provide boundary layer control over a given area.
Brown Garry L.
Nosenchuck Daniel M.
British Technology Group Usa Inc.
Mccarthy Tetrault Llp
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