Vought UO

The Vought UO was a two-seat biplane observation aircraft that the Chance Vought company developed in the early 1920s from the VE-7 and VE-9 trainer line. Its airframe was basically similar to the VE series with some refinements, the most noticeable being revised vertical tail surfaces. It was powered first by a Lawrence J-1 or J-3 radial engine of 149 kilowatts, later by a Wright J-1 or J-3 radial, and from 1927 many were re-engined with the 164 kilowatt Wright J-5. The UO-1 landplane had a wingspan of 10.45 metres, a length of 7.45 metres and a top speed of 200 kilometres per hour. Final development produced an order for 20 UO-3 single-seat catapult-launched floatplane fighters, which were redesignated FU-1 before delivery, and Peru later replaced its surviving UOs with Vought O2U-1 aircraft in 1929.