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.

[2] 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.

[4] The craft was said by its inventors that, in December 1922, it made a flight lasting 15 minutes, rising to an altitude of 6 ft (1.8 m).

[3][5] Data from Proceedings of the United States Naval Institute[1] and New York Times[6]General characteristics Performance