The Cierva C.3 was an experimental autogyro built by Juan de la Cierva in Spain in 1921. It was based on the fuselage of a Sommer monoplane and was actually completed and tested before that aircraft. The C.3 utilised a single three-bladed rotor in place of the coaxial double rotor tested on the C.1.
Made by Juan de la Cierva.