Discussion
An airfoil is a section shaped to produce
Answer: C
Correct answer: Lift
An airfoil is a section shaped so that the flow over it is faster on one side than the other, producing a pressure difference and hence a force perpendicular to the relative wind. Everything else about the shape - the camber, the thickness distribution, the leading edge radius - is a refinement of how well and over what range of conditions it does that.
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