Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1990-11-16
1992-10-27
Barefoot, Galen
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244207, B64C 2108
Patent
active
051582511
ABSTRACT:
Apparatus and method for attenuating fluid foil tip vortices, featuring a "Coanda tip" and a "Coanda curtain." The fluid foil tip has a Coanda surface and means for discharging compressed fluid adjacent thereto; a resultant fluid barrier is formed generally chordwise and perpendicular to the fluid foil plane and tangential to the fluid foil tip upon Coanda entrainment and deflection of the discharged compressed fluid. The fluid barrier prevents crossflow from the higher pressure fluid region to the lower pressure fluid region, the fluid regions being separated by the fluid foil when moving relatively through a fluid, the fluid barrier thereby stemming tip vortex generation at its source.
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Barefoot Galen
Kaiser Howard
The United State of America as represented by the Secretary of t
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