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This Insane Helicopter Was The Largest Ever Built: The Mil V-12 Story (2020x5)
: 10, 2020
The Soviets built some of the largest and most technically advanced helicopters in the world. By 1957, the Mil Mi-6 had already emerged as the largest helicopter ever built, far out-sizing helicopters built in the west. But for the Soviet Union, the need to build a helicopter far larger than even the Mi-6, soon became a matter of national security.