Fokker S.I

Fokker S.I
Role	Primary trainer
Manufacturer	Fokker
Designer	Rheinhold Platz
First flight	1919
Primary users	USSR United States Army Air Service
Number built	3 (and one prototype)

The Fokker S.I was a 1910s Dutch primary trainer, the first of a family of trainers from the Fokker company.

Development

The S.I was designed by Rheinhold Platz as a primary trainer with a cantilever parasol wing with two side-by-side seats for instructor and pupil in a wide cockpit. It first flew in early 1919 at Schwerin. Although the prototype performed well, the unusual cantilever parasol wing was not liked and only three production aircraft were built.

Two production aircraft were powered by 60 kW (80 hp) Rhone engines and were exported to the USSR and one other aircraft was built for the United States Army Air Service for evaluation at McCook Field. The USAAS aircraft was powered by a 67 kW (90 hp) Curtiss OX-5 engine and was designated the TW-4 (Trainer Water-cooled).

Operators

 Soviet Union

 United States

• United States Army Air Service as the TW-4.

Specifications (TW-4)

General characteristics

• Powerplant: 1 × Curtiss OX-5, 67 kW (90 hp)

Performance

Related lists

• List of military aircraft of the United States
  

References

• The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1899

Aircraft produced by Fokker Company designations pre-1918 M.1 · M.2 · M.3 · M.4 · M.5 · M.6 · M.7 · M.8 · M.9 · M.10 · M.14 · M.15 · M.16 · M.17 · M.18 · M.19 · M.21 · M.22 V.1 · V.2 · V.3 · V.4 · V.5 · V.6 · V.7 · V.8 · V.9 · V.10 · V.11 · V.12 · V.13 · V.14 · V.16 · V.17 · V.18 · V.20 · V.21 · V.22 · V.23 · V.24 · V.25 · V.26 · V.27 · V.28 · V.29 · V.30 · V.31 · V.33 · V.34 · V.35 · V.36 · V.37 · V.38 · V.39 · V.40 · V.41 · V.43 · V.44 · V.45 Austro-Hungarian military designations B.I · B.II · B.III German military designations A.I · A.II · A.III C.I D.I · D.II · D.III · D.IV · D.V · D.VI · D.VII · D.VIII Dr.I E.I · E.II · E.III · E.IV · E.V F.I K.I Company designations post-1918 Numbering continues German military designations: B.I · B.II · B.IIII · B.IV · B.V C.II · C.III · C.IV · C.V · C.VI · C.VII · C.VIII · C.IX · C.X · C.XI · C.XIV · C.XV D.IX · D.X · D.XI · D.XII · D.XIII · D.XIV · D.XVI · D.XVII · D.XXI · D.XXIII · D.24 DC.I F.I · F.II · F.III · F.IV · F.V · F.VI · F.VII · F.VIII · F.IX · F.X · F.XI · F.XII · F.XIII · F.XIV · F.XV · F.XVI · F.XVII · F.XVIII · F.XIX · F.XX · F.XXI · F.XXII · F.XXIII · F.XXIV · F.25 · F26 · F27 · F28 · F.29 FG.I · FG.II G.I S.I · S.II · S.III · S.IV · S.IX · S-11 · S-12 · S-13 · S-14 T.II · T.III · T.IV · T.V · T.VIII · T.IX Numbering based on seating: F.XXXVI · F.XXXVII · 50 · F.56 · 60 · 70 · 100 · 130 Fokker America F.7 · F.9 Universal · Super Universal · F.10 · F.11 · F.14 · AF.15 · F.18 · F.32 United States military designations Observation: AO-1 · CO-4 · XO-27 Transports: T-2 · C-2 · C-5 · C-7 · C-14 · C-15 · C-16 · C-20 · C-31 · RA Bombers: XLB-2 · XHB-2 · XB-8 · FT Attack: XA-7 Fighters: PW-5 · PW-6 · PW-7 Ambulance: A-2 Trainer: TW-4

USAAS trainer designations 1919-1924 Trainer, Air-cooled TA-1  • TA-2  • TA-3  • TA-4  • TA-5  • TA-6 Trainer, Water-cooled TW-1  • TW-2  • TW-3  • TW-4  • TW-5

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