Helicopters Used in the Vietnam War
24/7 Wall St.The first multi-engine helicopter, the Vought-Sikorsky VS-300 designed by Russian emigree Igor Sikorsky, made its debut in the United States in Connecticut in late 1939. This became known as the first successful helicopter for the U.S. and became the model for all future single-model helicopters. By the end of the Second World War, these flying […]
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