A NACA 0012 airfoil has a trailing edge flap. The airfoil is operating at an angle of attack of 5 degrees with un-deflected flap
Q. A NACA 0012 airfoil has a trailing edge flap. The airfoil is operating at an angle of attack of 5 degrees with un-deflected flap. If the flap is now deflected by 5 degrees downwards, the 𝐶𝐿 versus 𝛼 curve
(A) shifts right and slope increases.
(B) shifts left and slope increases.
(C) shifts left and slope stays the same.
(D) shifts right and slope stays the same.
Ans: shifts left and slope stays the same.
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