De Schelde S.21
Another Dutch design aborted in 1940.
Developed by the Dutch shipbuilding company NV Koninklijke Maatschappij De Schelde, the S.20 was an all-metal pusher fighter designed in 1939. The first prototype was almost finished construction when German forces captured the factory, and was never completed but was tested to destruction.
A novel nose-wheel pusher design, De Schelde worked around the pilot bailing out problem, which plagued Fokker and their D.XXIII, by the novel method of ejecting the propeller. The aircraft was intended for air-air interception and air-ground straffing, with a cannon mounted in the nose which could be locked into position and fired, and with an autopilot system to allow the pilot to fly by rudder pedals and aim the cannon by hand.
If it had been used in combat the S.21 would probably have been unbearably noisy for the pilot, as in addition to the nose mounted cannon 4 machine guns were mounted in the cockpit, 2 on either side of the pilot's shoulders firing through the cockpit glazing.