Florine Type II helicopter prototype (c1933)

Nicolas Florine, born Nikolay Florin (19 July 1891 – 21 January 1972), was an engineer who settled in Belgium. He built the first tandem rotor helicopter to fly freely in 1933. He was born in Batumi, Georgia. The Type II was largely built at Sociéte Anonyme Avions et Moteurs...