Dutch company called Koninklijke Maatschappij De Schelde started an aviation department with the collapse
of Pander & Zonen picking up that company's chief engineer in 1935.
The aircraft had some unusual features. It was all-metal in construction, a reverse gull wing with twin booms.
De Schelde S.21 single seat fighter It was powered by a 1,085 hp Daimler-Benz DB 600G 12-cylinder inverted V liquid
cooled engine driving a pushed propeller via a shaft, which could be jettisoned in flight if the pilot had to bail out.
The cockpit was extensively glazed giving the pilot a good field of view.
Heavy armament was proposed for the aircraft with four 7.9 mm machine guns mounted on the side of the forward fuselage,
a 23 mm forward firing cannon and one rear facing 23 mm cannon firing through the propeller hub, although how this was aimed is unclear.
Only one prototype was built as the Germans occupied the factory in 1940.
The aircraft was transported back to Germany where it was tested to destruction; it was never flown.
It was calculated by the designer that the aircraft would have had a maximum speed of 590 km/h.
model and textures by Richard Alexander van Hien
rvanhien@uol.com.br, or ravhien@fazenda.sp.gov.br
