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Fokker D.XXIII
Role Single-seat fighter
National origin Netherlands
Manufacturer Fokker
Designer Marius Beeling
First flight 30 May 1939
Number built 1

The Fokker D.XXIII was a Dutch single-seat fighter designed and built by Fokker. Only one aircraft was flown before the country was invaded by the Germans in May 1940.[1]


The Fokker D.XXIII was designed as a twin-engined single-seat aircraft. To overcome the problems of asymmetric flight it had a tractor engine at the front and a pusher engine at the rear.[1] The D.XXIII was a cantilever monoplane with the twin tail units on booms.[1] The pilot had an enclosed cockpit in between the tractor and pusher engines and it had a retractable tricycle landing gear.[1]

The prototype first flew on 30 May 1939 powered by two Walter Sagitta I-SR liquid cooled vee piston engines.[1] The trial flights identified problems with the cooling of the rear engine and general engine performance. It was proposed to use Rolls-Royce or Daimler-Benz engines in the production aircraft.[1] Concerns were also raised about the pilot clearing the rear propeller if he had to bail out and an ejector seat was studied.[1] The programme was abandoned in May 1940 when the German forces invaded the Netherlands.[1]



Data from [1]

General characteristics

  • Crew: 1
  • Length: 10.2 m (33 ft 6 in)
  • Wingspan: 11.5 m (37 ft 9 in)
  • Height: 3.8 m (12 ft 6 in)
  • Wing area: 18.5 m2 (199 sq ft)
  • Empty weight: 2,180 kg (4,806 lb) equipped
  • Max takeoff weight: 2,950 kg (6,504 lb)
  • Powerplant: 2 × Walter Sagitta I-SR liquid-cooled 12-cylinder Vee piston engine, 400 kW (530 hp) each


  • Maximum speed: 525 km/h (326 mph; 283 kn) estimated
  • Range: 840 km (522 mi; 454 nmi)
  • Service ceiling: 9,000 m (29,528 ft)


  • Guns: two 7.9mm (0.31in) machine guns and two 13.2mm (0.52in) machine-guns (planned not fitted to prototype)



  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Orbis 1985, p. 1876


  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 

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