Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1995-12-01
1998-09-08
Grant, William
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244207, 114 67A, B64C 2104, B64C 2106
Patent
active
058034102
ABSTRACT:
A system and method for reducing skin friction of an object in relative motion to a fluid. A skin forming a boundary between the object and the fluid, the skin having holes through which micro-blowing of air is blown and a transmitting mechanism for transmitting air through the skin. The skin has an inner layer and an outer layer, the inner layer being a low permeable porous sheet, the outer layer being a plate having high aspect ratio high porosity, and small holes. The system may further include a suction apparatus for suctioning air from the outer layer. The method includes the steps of transmitting air through the inner layer and passing the air transmitted through the inner layer to the outer layer. The method may further include the step of bleeding air off the outer layer using the suction apparatus.
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Grant William
Reinecke Susan D.
Stone Kent N.
The United States of America as represented by the Administrator
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