Airfoil vortex attenuation apparatus and method

Details Airfoil vortex attenuation apparatus and method Airfoil vortex attenuation apparatus and method

1996-10-03

1998-09-15

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 91, 244130, B64C 2102

Patent

active

058068074

ABSTRACT:
A vortex attenuating airfoil (24) includes an outboard area (28). The outboard area includes a deflector (40) which is disposed in the inboard direction from a tip (30). An air passage (46) extends through the airfoil from an inlet (48) on a high pressure side of said airfoil to an outlet (50) on a low pressure side of the airfoil. The outlet (50) is positioned in the outboard area between said deflector and the tip. In operation, air passes through the air passage to attenuate the naturally occurring vortex adjacent to the tip of the airfoil thereby reducing drag.

REFERENCES:
patent: 2163655 (1939-06-01), Zimmerman
patent: 4017041 (1977-04-01), Nelson
patent: 4477042 (1984-10-01), Griswold, II
patent: 4478380 (1984-10-01), Frakes

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