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Is symmetric airfoil produce positive lift?

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in Aerodynamics by (773k points)
Is symmetric airfoil produce positive lift?

(a) False

(b) True

The question was posed to me in a national level competition.

The question is from The Symmetric Airfoil in chapter Incompressible Flow over Airfoils of Aerodynamics

1 Answer

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Best answer
The correct option is (b) True

Best explanation: A symmetrical airfoil only produces positive lift, when it is at a positive angle of attack that is leading edge is higher than the trailing edge. The air stream splits between top and bottom at the stagnation point which is in front of and below the Centre of nose radius.

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