/ Fokker S.II / S.III / S.IV
Fokker S.II / S.III / S.IV
The S.II was designed as the second Fokker primary trainer, but unlike the earlier S.I monoplane the S.II was an unequal-span single-bay biplane with a fixed cross-axle landing gear.
It had side-by-side seating for an instructor and pupil and was originally powered by an 82 kW (110 hp) Thulin rotary engine.
The engine was later replaced with a Le Rhone-Oberursel engine.
Two-seat primary trainer biplane.
One aircraft imported into the United States by Atlantic Aircraft.
The Fokker S.IV was a military trainer aircraft produced in the Netherlands in the mid-1920s.
It was a conventional, single-bay biplane with staggered wings of unequal span braced with N-struts, essentially a radial engined development of the S.III.
8.55 m (28 ft 1 in)
11.17 m (36 ft 8 in)
3.15 m (10 ft 4 in)
27.55 m2 (296.5 sq ft)
650 kg (1,433 lb)
1,000 kg (2,205 lb)
1 × Le Rhône 9J 9-cylinder air-cooled rotary piston engine, 82 kW (110 hp)
2-bladed fixed pitch propeller
160 km/h (99 mph, 86 kn)
65 km/h (40 mph, 35 kn)
4,000 m (13,000 ft)
Time to altitude
1,000 m (3,300 ft) in 6 minutes
36.29 kg/m2 (7.43 lb/sq ft)
0.0830 kW/kg (0.0505 hp/lb).
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