Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1997-07-07
1999-08-24
Jordan, Charles T.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244203, 244205, 244130, B64C 2100, F15D 106
Patent
active
059414812
ABSTRACT:
An electro-magnetohydrodynamic (EMHD) transducer that detects and manipuls the velocity of a near-wall fluid below a turbulent boundary layer includes a magnetic field generator to provide a magnetic field near a surface exposed to the fluid. A pair of spaced electrodes are disposed within the magnetic field. A controller coupled to the electrodes detects the electric field induced by the motion of a conductive fluid relative to the surface. The controller selectively activates the electrodes to generate an applied electric field between the electrodes when the detected field exceeds a threshold. The Lorentz force generated in response to the applied electric field and the magnetic field either decelerates or accelerates the motion of the conductive fluid to prevent the formation of turbulent events.
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patent: 5437421 (1995-08-01), Nosenchuck et al.
patent: 5791275 (1998-08-01), Bandyopadhyay
Ducker, Jr. Charles R.
Jordan Charles T.
Lall Prithvi C.
McGowan Michael J.
Oglo Michael F.
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