The Fokker D.XXIII was developed in the Netherlands twin- engined fighter.
The D.XXIII was designed by engineer Marius Beeling and met with its appearance in 1939 with great interest abroad, which was due not least to the unconventional design of the type. The engines were placed at both ends of a central fuselage nacelle and each drove a train and a pusher propeller to. From this constructive interpretation inevitably also resulted in the use of double tail booms. Since the risk of a possible contact was with the rear propeller when leaving the aircraft in an emergency, Beeling even planned the D.XXIII with an ejection seat equipped.
The trial began on 30 May 1939 and it soon became apparent that the engine Walter Sagitta I- SR used was too weak, were added still problems with the cooling of the rear drive. Fokker took about an upgrade to the Rolls- Royce and Daimler Benz engines in the eye, not least because of the expected orders from abroad. When the Netherlands were invaded on 10 May 1940 by the German Wehrmacht, which was also the end of this revolutionary project. The only prototype was destroyed during the invasion at Schiphol.
The D.XXIII was carried out in mixed construction, the hull was made of metal, which are arranged in low-wing monoplane wing design were made of wood. The two tail booms connected the horizontal stabilizer. The landing gear was fully retractable. The pilot sat in an enclosed cockpit.