Compliant structure design for 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 edge of the elongated airfoil, said elongated edge portion having an elongated continuous surface element having a continuous internal structure extending in a span-wise direction of the airfoil and having first and second surface element edges that are arranged to contact, and to form extensions of, respectively associated ones of the upper and lower control surfaces of the elongated airfoil, the continuous surface element being formed of a deformable compliant material that extends cross-sectionally from the first surface element edge that is configured to contact, and form an extension of, one of the upper and lower control surfaces, to an apex of said elongated edge portion, and to the second surface element edge that is configured to contact, and form an extension of the other of the upper and lower control surfaces;
• wherein the elongated continuous surface element has a span-wise length that is greater than a maximum height between the first and second surface element edges;
• and
• an actuation linkage element coupled to an interior surface of one of the first or second surface element edges of the continuous surface element, wherein the actuation linkage element is connected to the interior surface at an intermediate location on the interior surface between a front and rear edge of the one of the first or second surface element edges.