Hydrofoils and airfoils

Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils

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Details

244199, 244198, 244201, 244204, B64C 2110

Patent

active

055404065

ABSTRACT:
A low turbulence cambered surface foil, hydrofoil or airfoil, which contains indentations located on maximum camber across which a fluid can be flowed. The indentations create turbulence in the boundary layer downstream of the indentations, changing the characteristics of the flowing fluid to a turbulent boundary layer ahead of the normal point of separation of the fluid from the foil, this causing the fluid to cling close to the surface of the foil and postpone or delay trailing edge separation of the fluid stream from the foil. The noise level is reduced, the performance and efficiency of the foil is improved, or both the noise level is reduced and the performance and efficiency of the foil is improved.

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patent: 5244349 (1993-09-01), Wang
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Flying, Mar. 1989, pp. 66, 67.
Machine Design, All This For A Golf Ball; By: James Braham, Senior Editor, Dec. 12, 1991, pp. 121-126.
Fluid-Dynamic Lift, Chapters 2-19, 6-18 and 6-19; By: Dr. Sighard F. Hoerner and H. V. Borst, 1985.

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