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The essential assumption of airfoil being a flat plate with a zero angle of attack gives accurate results always.

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The essential assumption of airfoil being a flat plate with a zero angle of attack gives accurate results always.

(a) False

(b) True

I had been asked this question in final exam.

The above asked question is from Laminar Flow topic in division Incompressible Flow over Airfoils of Aerodynamics

1 Answer

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Best answer
Right option is (a) False

The best I can explain: This assumption is a first order approximation and the results become more accurate as the airfoil gets thinner and angle of attack approaches zero. It gives good results but the level of accuracy varies.

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