A NACA 0012 airfoil has a trailing edge flap. The airfoil is operating – McqOptions

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1.	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 left and slope stays the same.
Answer» D. shifts left and slope stays the same.

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