U.S. Patent Specifications

Abstract

An aircraft comprising in combination, a fuselage having an empennage and forward propulsive means, a disk‐shaped aerofoil mounted on said fuselage for universal inclination thereon, means for rotating said aerofoil, a plurality of rotary wing blades mounted for rotation with said disk‐shaped aerofoil, and means for retracting said blades into said aerofoil and for extending said blades outside of said aerofoil.

Citation

(1954), "U.S. Patent Specifications", Aircraft Engineering and Aerospace Technology, Vol. 26 No. 11, pp. 400-400. https://doi.org/10.1108/eb032498