Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1996-11-19
1999-10-12
Mojica, Virna Lissi
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244130, 244204, B64C 138, B64C 2110, B64C 2306
Patent
active
059644338
ABSTRACT:
The boundary layer of a fluid travelling in a mean-flow direction relative to a surface of a wall of a body is controlled by generating in the fluid a magnetic field B having flux lines along the surface of the wall and an electric current density J traversing the magnetic flux lines in the fluid to form a control region. The magnetic field B and the electric current density J create in the control region a force J.times.B that introduces a vorticity distribution .omega. (x,y,z,t) into the flow. A plurality of such control regions is arranged in an two-dimensional array of control tiles that are actuated such that over the array the vorticity at the wall in the direction transverse to the free-stream direction is reduced and creation of the boundary layer vorticity concentrations in the free-stream direction is inhibited.
REFERENCES:
patent: 2763125 (1956-09-01), Kadosch et al.
patent: 2946541 (1960-07-01), Boyd
patent: 3095163 (1963-06-01), Hill
patent: 3162398 (1964-12-01), Clauser et al.
patent: 3224375 (1965-12-01), Hoff
patent: 3360220 (1967-12-01), Meyer
patent: 3390693 (1968-07-01), Ziemer et al.
patent: 3494369 (1970-02-01), Inoue
patent: 3662554 (1972-05-01), De Broqueville
patent: 3851195 (1974-11-01), Zauderer
patent: 3854061 (1974-12-01), Rosa
patent: 3880192 (1975-04-01), Denizov et al.
patent: 4171707 (1979-10-01), Branover
patent: 4216800 (1980-08-01), Garnier et al.
patent: 4516747 (1985-05-01), Lurz
patent: 5040560 (1991-08-01), Glezer et al.
patent: 5052491 (1991-10-01), Harms et al.
patent: 5074324 (1991-12-01), Ng
patent: 5273465 (1993-12-01), Meng
patent: 5320309 (1994-06-01), Nosenchuck et al.
patent: 5437421 (1995-08-01), Nosenchuck et al.
patent: 5791275 (1998-08-01), Bandyopadhyay
Nosenchuck, D.M., and Brown, G.L., "The Direct Control of Wall-Shear Stress in a Turbulent Boundary Layer in Single and Multiple Domains," MAE Report T1954 (Princeton Univ.), Aug. 31, 1992.
Nosenchuck, D.M., and Brown, G.L., "Discrete Spatial Control of Wall Shear Stress in a Turbulent Boundary Layer," Proceedings of Int.l. Conf. on Near-Wall Turb. Flows, (Ariz. State Univ.), 1993.
Watanabe T., "Magnetohydrodynamic Stability of a Boundary Layer Flow with Suction or Injection Along a Flat Plate," ZAMM 67 (1987) pp. 27-30.
A. Tsinober, "MHD Flow Drag Reduction," Viscous Drag Reduction in Boundary Layers, American Institute of Aeronautics and Astronautics, Inc., 1990.
Mojica Virna Lissi
The Trustees of Princeton Univ.
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