De Schelde S.20 & S.21

The prototype De Schelde S.20 was just completed before German occupation in June 1940. It was designed as a trainer for KLM & the military. It first flew on March the 29th 1940 and showed good performance & stability. Sadly the flying could not continue for long.  The aircraft was hidden from the Germans in a hanger under some junk. It was finally discovered in June 1941 but was badly damaged by resistance fighters and never flew again.

De Schelde S.20
Crew: 2 men
Payload: 250 kg
Power plant: Hirth 160 hp air-cooled six-cylinder 
with adjustable two-bladed wooden propeller
Wingspan: 11.35 m
Length: 8.65 m
maximum height: 2.60 m
Propeller diameter: 2.10 m
Empty Weight: 840 kg
Normal takeoff weight: 1260 kg
Maximum takeoff weight: 1340 kg
Fuel tank capacity: 200 liters
Lubricant tank capacity: 20 liters
Fuel Consumption: 37.8 liters / h
Lubricant consumption: 0.5 kg / h
Wing loading: 78.36 kg / m²
Power load: 8.38 kg / hp (11.38 kg / kW)
Speed near the ground: 194 km / h
Maximum speed of 3,000 m: 216 km / h
Cruising speed at 3,000 m: 180 km / h
Landing speed: 86 km / h
Ceiling: 4,800 m
Climb: 4.5 m / s
Rise time to 1,000 m: 3.8 min
Rise time to 3,000 m: 15.0 min
Normal range: 650 km
Maximum range: 780 km
Flight duration: 1.75 h




De Schelde S.21


The prototype De Schelde S-21 was nearing completion when the Germans occupied the works in 1940, and it never flew. It was to have had a 1,085-h.p. Daimler-Benz DB-600G pusher engille with which a top speed of 367 m.p.h. was estimated. Armament consisted of two 7.7-mm. and two 23-mm. guns, two firing forward and two aft.

 



De Schelde S-21