(November 22, 1909 - January 31, 1970) Mikhail Leontyevich Mil was a Soviet aerospace engineer. He was founder of the Mil Moscow Helicopter Plant, which is responsible for many well-known Soviet helicopter models.
Initial flight of the Focke-Wulf Fw 61, the first practical helicopter.
The Focke-Wulf Fw 61 is often considered the first practical, functional helicopter, first flown in 1936. It was also known as the Fa 61, as Focke began a new company—Focke Achgelis—after development had begun.