Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1987-11-04
1991-08-06
Focarino, Margaret A.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244198, B64C 358
Patent
active
050370448
ABSTRACT:
An aerodynamic or hydrodynamic surface having a swept-back leading edge includes at least one flow separation device located on an attachment line of the leading edge, such as a step-up, step-down, fence or gap. The flow separation devices are preferably arranged normal to the leading edge and are dimensioned so that span-wise turbulent air flow is re-laminarized downstream of the devices thus reducing skin-friction and greatly improving the aerodynamic or hydrodynamic efficiency of the surface.
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"Fluid-Dynamic Lift" 1975, pp. 16-12 to 16-14, S. F. Hoerner.
British Aerospace Public Limited Company
Focarino Margaret A.
Kannofsky James M.
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