Foil (fluid Mechanics)
A foil is a solid object with a shape such that when placed in a moving fluid at a suitable angle of attack the lift (force generated perpendicular to the fluid flow) is substantially larger than the drag (force generated parallel the fluid flow). If the fluid is a gas, the foil is called an airfoil or aerofoil, and if the fluid is water the foil is called a hydrofoil.
Read more about Foil (fluid Mechanics): Physics of Foils, Basic Design Considerations
Famous quotes containing the word foil:
“the stars turn slowly
in the blue foil beside them
like the eyes of a mild savior.”
—James Tate (b. 1943)