Voisin Ivanov, V.I.,
Piotr Ivanov, Anatra
Development of the French Voisin LAS pusher biplane with
substantial changes. Aircraft was re-built by military pilot Piotr Ivanov in Zhmerinka, where 6th aviation supply (aviapark)
division was located. New crew nacell, made of plywood, had very clean lines. Front (observer's) seat was equipped with
machinegun mount of original design. Firewall (aluminum plate) was installed between engine and fuel tank. The last one was
protected to prevent gasoline leak in case of a combat puncture.
Landing gear was strengthened. Third wing spar added, all spars - steel tubes. All struts (wings and tail frame) were made
of elliptical steel tubes or equipped with wooden cover to make them oval.
Despite increased strength, aircraft was 20km/h faster than original Voisin LAS, powered
with same engine. As a result of fight tests (since April 6, 1919) Voisin-Ivanov
replaced original French aircraft on production lines (mostly on Anatra factories), and more than 150
were built in 1916-1917.
Aircraft was in service until 1922.
"History of aircraft construction in the USSR" by
V.B.Shavrov, Vol.1 p.196-197;
Anatra V.I. (Estonian)