Fokker S.I

Fokker S.I
Type	Primary trainer
Manufacturer	Fokker
Designed by	Rheinhold Platz
Maiden 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 80hp (60kW) 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 90hp (67kW) Curtiss OX-5 engine and was designated the TW-4 (Trainer Water-cooled).

Operators

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

Specifications (TW-4)

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

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Fokker S.I".