Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1995-07-26
1996-07-30
Kashnikow, Andres
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
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.
REFERENCES:
patent: 1501248 (1924-07-01), Strong
patent: 2739770 (1956-03-01), Fanti et al.
patent: 3406929 (1968-10-01), Young
patent: 3463418 (1969-08-01), Miksch
patent: 3525486 (1970-08-01), Wimpenny
patent: 3612446 (1971-10-01), Lebert
patent: 4802642 (1989-02-01), Mangiarotty
patent: 5244349 (1993-09-01), Wang
Aerodynamics Theories of Drag and Skin Friction; By: Theodore von Karman McGraw-Hill Book Company, Inc., pp. 88-91.
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.
Dinh Tien
Kashnikow Andres
Proctor Llewellyn A.
LandOfFree
Hydrofoils and airfoils does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrofoils and airfoils, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrofoils and airfoils will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1653360