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Further Reading

V-16

Simultaneously with building the V-12, in accordance with the originally selected plan of the development of heavy helicopter construction, in OKB im. M.L.Mil was conducted the development of superheavy rotary-wing apparatus V-16 by load capacity 40-50 T. It was intended for the transportation of non-detachable national-economic loads, tanks, and also it had to serve "roaming launch of intercontinental missiles". Helicopter V -16 was considered as further development of the V-12.

Initially it was planned to build V -16 according to three-screw layout with six engines D-25[Vf], but then appeared the project of the "farm horse" transverse layout, equipped with two powerful gas turbine engines with the slow free turbines and with vertical shafts. On the basis of this project in 1966 Mil developed a version V-12 under the designation Mi-12M. It was intended to replace by V-12 four engines D-25Vf with two newer D-30[v] engines with the power in 20000 hp from OKB P.A.Soloveiv and to increase the number of blades on each rotor to six. The Mi-12M it had to transport load with the mass of 25 t up to a distance of 500 km, and the proposal obtained government support for carrying a mass of 40 t up to the distance of 200 km. But because of the curtailment of program V-12 the development of the Mi-12M was interrupted at the stage of building full-scale mock-up.