U.S. Patent Specifications

Abstract

In an airfoil system tapered spanwise in thickness, a fixed airfoil having a substantially flat trailing edge normal to the airfoil chord plane, hinge means defining two hinge axes one close to one side of the airfoil trailing edge and one close to the other side of the airfoil trailing edge, said hinge axes converging toward one another, spanwise, in accordance with the taper of the airfoil system, a spanwise tapered control airfoil having devices engaging said hinge means, mechanism to move the airfoil upon said hinge means, and reliefs at said hinge means to allow of control airfoil movement to one side of neutral about the hinge axis closest to the one side, and to allow of control airfoil movement to the other side of neutral about the other hinge axis closest to the other side.

Citation

(1943), "U.S. Patent Specifications", Aircraft Engineering and Aerospace Technology, Vol. 15 No. 4, pp. 123-124. https://doi.org/10.1108/eb031014