Fokker V.25

The Fokker V.25 was an experimental monoplane built by the Dutch firm Fokker in the latter stages of World War I, when the company was operating under the auspices of the German military. Designed in 1917 as a continuation of the V‑series of prototype fighters, the V.25 incorporated a refined fuselage and a more powerful Oberursel rotary engine, delivering roughly 120 hp. Its single‑bay, cantilever wing was covered with fabric over a lightweight wooden structure, giving the aircraft a sleek profile and a modest increase in speed—estimated at 180 km/h (112 mph)—over earlier models. Although only a handful of V.25 units were constructed and the type never entered mass production, the aircraft served as a valuable testbed for aerodynamic concepts that would later appear in the famous Fokker D.VII. The V.25’s emphasis on streamlined shape, improved control surfaces, and a higher power‑to‑weight ratio contributed to Fokker’s reputation for innovative fighter design. Its experimental data helped shape post‑war monoplane development and underscored the transition from biplane dominance to more efficient, single‑wing configurations that defined early 20th‑century aviation progress.

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