Determine the corrections or otherwise of the following assertion [A] and reason [R]:Assertion [A]: Most of the tails are using symmetric airfoils.Reason[R]: Tail control has two primary control surface.

This quiz covers: Airfoil selection, wing geometry, tail geometry and arrangement.

The shape of the airfoil is defined using the following geometrical parameters: The mean camber line or mean line is the locus of points midway between the upper and lower surfaces. Its shape depends on the thickness distribution along the chord; The thickness of an airfoil varies along the chord.