Abstract: A continuous skin and seal airfoil comprises a rigid structural wing box located centrally chordwise and extending spanwise and including a spanwise extending spar, an upper skin surface and a lower skin surface. Upper and lower control surfaces are pivotally mounted on the spar for movement about a spanwise extending axis between an elevated position and a lowered position and includes an upper skin surface. In similar fashion, a lower control surface is pivotally mounted on the wing box for movement about a spanwise extending axis between an elevated position and a lowered position and includes a lower skin surface. An upper seal member extends spanwise and is fixed to both the wing box and to the upper control surface. Similarly, a lower seal member extends spanwise and is fixed to both the wing box and to the lower control surface. Actuators move the control surfaces between an elevated position and a lowered position.