Developed at Schwerin from the V.41, the partly-completed single-seat fighter prototype was taken to the Netherlands, where, in 1921, it was completed with a 300hp Hispano-Suiza 8Fb eight-cylinder water-cooled engine in place of the 185hp BMW Ilia six-cylinder engine for which it had been originally intended.
A cantilever parasol monoplane with a plywood-skinned wooden wing and a steel-tube fuselage, the prototype crashed as a result of wing flutter during a demonstration in Spain in 1922. An order for 10 D X fighters was placed on behalf of the Aeronautica Militar Espanola, these being supplied during the course of 1923. In the same year, one example of the D X was supplied to Finland. Armament comprised two 7.92mm machine guns.
Engine: 300 h.p. Hispano-Suiza
Wingspan: 13.75 m / 45 ft 1 in
Length: 8.00 m / 26 ft 3 in
Height: 3.00 m / 9 ft 10 in
Max take-off weight: 1246 kg / 2747 lb
Empty weight: 860 kg / 1896 lb
Max. speed: 225 km/h / 140 mph
Armament: two 7.92mm machine guns