Compliant structure design of varying surface contours

An edge morphing arrangement for an elongated airfoil having upper and lower control surfaces, the elongated airfoil edge morphing arrangement comprising:

• an elongated edge portion arranged to overlie the curved leading edge of the elongated airfoil, said elongated edge portion having a substantially continuous surface element having a first and second surface element edges that are arranged to communicate with, and to form extensions of, respectively associated ones of the upper and lower control surfaces of the elongated airfoil, the substantially continuous surface element being formed of a deformable compliant material that extends cross-sectionally from the first surface element edge that is configured to communicate with, and form an extension of, one of the upper and lower control surfaces, to an apex of said edge portion, and to the second surface element edge that is configured to communicate with, and form an extension of the other of the upper and lower control surface;
• and
• an actuation linkage element coupled to an interior surface of the substantially continuous surface element.