Mi-2, NATO code name 'Hoplite', was developed in the early 1960's by
the Mil bureau as a turbine-powered version of the Mi-1 Hare. The
recently development of the shaft-turbine engine revolutionized the
design of the helicopter. The twin turbines develop 40% more power than
the Mi-1's piston engine for barely half the dry weight, more than
doubling the payload.
The fuselage of the Mi-2 greatly differs from that of the Mi-1,
carrying the engines above the cabin but the overall dimensions of the
two models remain closely similar.
The Mi-2 was flown in 1962, but never put into production in the Soviet
Union. Instead responsibility for the type was assigned to WSK-Swidnik
(now PZL) to Poland as part of a eastern Europe Comecon rationalization
programme, becoming the only Soviet-designed helicopter to be built
solely outside the Soviet Union.
Production in Poland started in 1965 and in the 90s, PZL factory
introduces a new variant: W-3.
8 passenger utility
Rotor diameter: 14.56 m
Length: 12 m
Height: 3.75 m
Disc area: 160 m2
Weights: empty: 2370 kgs, Max: 3700 Kgs, slung load: 800 kgs.
Engine: 2 Isotov GTD-350 of 431 shp
Speed: Max: 210 km/h
Range: 340 km
Service Ceiling: 4000 m