Siebel Si 201
|Siebel Si 201|
|Role||air observation post|
|Manufacturer||Siebel Flugzeugwerke Halle K.G.|
The Siebel Si 201 was a German air observation post and army co-operation aircraft designed and built by Siebel. Evaluated against other types the Si 201 did not enter production and only two prototypes were built.
Design and development 
Designed to meet a requirement for an air observation post and army co-operation aircraft the Si 201 first flew in 1938. Evaluated against the Fieseler Fi 156 and Messerschmitt Bf 163. The Fi 156 was ordered into production and only the two prototype 201s were built.
The Si 201 was a high-wing braced monoplane with a tail-wheel landing gear. Powered by an Argus As 10C mounted above the wing and driving a pusher propeller. It had a boxy, fully glazed forward fuselage with room for a pilot and observer in tandem.
Data from Warplanes of the Third Reich
- Crew: 2
- Length: 10.401 m (34 ft 1 in) 1⁄2
- Wingspan: 14.002 m (45 ft 11 in) 1⁄4
- Height: 3.397 m (11 ft 1 in) 3⁄4
- Wing area: 31.00 m2 (333.7 sq ft)
- Empty weight: 1,120 kg (2,469 lb)
- Gross weight: 1,440 kg (3,175 lb)
- Powerplant: 1 × Argus As 10C air-cooled inverted V8 engine, 180 kW (240 hp)
- Maximum speed: 185 km/h; 100 kn (115 mph) at sea level
- Cruise speed: 150 km/h; 81 kn (93 mph)
- Range: 451 km; 243 nmi (280 mi)
- Service ceiling: 5,502 m (18,050 ft)
- Rate of climb: 4.20 m/s (827 ft/min)
- Time to altitude: 4.5 min to 1,000 m (3,300 ft)
See also 
- Aircraft of comparable role, configuration and era
- Related lists
- History of Aviation Siebel Si 201
- Green 1970, p. 669.
- Green, William. Warplanes of the Third Reich. New York, Doubleday, 1970. ISBN 0-385-05782-2.