Fokker D.XI

The Fokker D.XI was a 1920s Dutch single-seat fighter designed by Reinhold Platz for Fokker, which first flew on 23 March 1923. It was a single-bay sesquiplane, with a lower wing smaller than the upper, a v-strut wing and a fixed tailskid landing gear, powered by a 224 kW Hispano-Suiza eight-cylinder Vee piston engine with twin radiators mounted on the sides of the nose, and it was armed with two forward-facing 7.7 mm machine guns. The Dutch government placed no order because of financial problems, but 117 were built for export with minor differences between customers. The main customer was the Soviet Union, which operated the aircraft until 1929; the United States Army bought three for evaluation as the PW-7, and Argentina, Romania, Spain and Switzerland also flew the type, while 50 aircraft on order for Germany were cancelled.