The Arado S I, a biplane trainer manufactured in Germany in 1925, had three prototypes.
The initial prototype was equipped with a Bristol Lucifer radial engine, whereas the remaining two Arado S.Ia planes were powered by the Siemens-Halske Sh 12.
The Arado S III, which was almost identical, was powered by the Siemens-Halske Sh 11.
Only one prototype of the Arado S III was built and sold to Turkey.
Specifications
S III
Crew
2
Length
7.5 m (24 ft 7 in)
Wingspan
11.5 m (37 ft 9 in)
Height
2.75 m (9 ft 0 in)
Wing area
27.3 m2 (294 sq ft)
Empty weight
600 kg (1,323 lb)
Gross weight
825 kg (1,819 lb)
Fuel capacity
90 L (24 US gal; 20 imp gal)
Powerplant
1 × Siemens-Halske Sh.11,
7-cylinder air-cooled radial piston engine,
71 kW (95 hp)
Propellers
2-bladed fixed pitch propeller
Performance
Maximum speed
128 km/h (80 mph, 69 kn)
Landing speed
50 km/h (31 mph; 27 kn)
Range
500 km (310 mi, 270 nmi)
Service ceiling
3,700 m (12,100 ft)
Rate of climb
1.66 m/s (327 ft/min)
Time to altitude
1,000 m (3,300 ft) in 10 minutes;
2,000 m (6,600 ft) in 22 minutes 30 seconds
Wing loading
30 kg/m2 (6.1 lb/sq ft)
Power/mass
0.0861 kW/kg (0.0524 hp/lb).
Sources Arado Geschichte Eines Flugzeugwerks-Jorg Armin Kranzhoff. Die geheimen Anfänge der Luftwaffe 1920-1935-Waffen-Arsenal Special Band-M Griehl. Die deutschen Militärflugzeuge 1919-1934-H Stutzer.
