Carlson-Lynch Vertipactor
The Carlson-Lynch Vertipactor was an experimental VTOL aircraft designed and built by two American inventors — Ivar Carlson and John Lynch — in the early 1920s and tested at Curtiss Field, Long Island, New York. It did not fly.
Design and development
The Vertipactor was a wingless airplane, designed to rise vertically by virtue of the slipstream from two propellers interacting with a canopy covering the aircraft, pushing the aircraft in a vertical direction upwards. The craft was fitted with a large canopy which enveloped the whole craft. The canopy had two vertical side walls connected to an arch at the top of the craft and was open at each end. Propellers at each end of the craft would force air into the Vertipactor and with the propwash then moving downwards, generating a lifting thrust. Within the canopy was a box-like girder fuselage, with a 200 hp Curtiss engine and propeller fitted at each end. The craft was fitted with a four-wheeled undercarriage.In 1922, Carlson was granted patent No. 1,405,667, for an "Aeroplane", embodying the principle behind the Vertipactor.