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Here is a picture of Sikorsky S-20 from the book "History of the airplane construction in USSR" by Shavrov.
S-20 was an original construction.
Only 5 planes were built in 1916 - beginning 1917, one of them on floats.
Here is also one of unusual Russian airplanes. This double-tail is VH-4 by V.N. Khioni, chief engineer of Anatra air plant. First flight 30.06.1916.
VH-4 was ordered to serial production (50 planes), but order was not fulfilled because of revolution.
Anatra, Dux, Lebedev, Mosca, Tschetinin, RBVZ(s) - all those airplants produced not only licensed, but also original designs.
Last edited by Burunduk; 10 July 2006 at 04:04 PM.
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