Igor Ivanovich Sikorsky (May 25, 1889 – October 26, 1972) was a Russian-American aviation pioneer in both helicopters and fixed-wing aircraft. First success came with the S-2, the second fixedwing plane of his design and construction. His fifth airplane, the S-5, won him national recognition as well as F.A.I. license Number 64. His S-6-A received the highest award at the 1912 Moscow Aviation Exhibition. and in the fall of that year the aircraft won for its young designer, builder and pilot first prize in the military competition at Petrograd.
in 1919, Sikorsky founded the Sikorsky Aircraft Corporation in 1923, and developed the first of Pan American Airways’ ocean-conquering flying boats in the 1930s.
In 1939 Sikorsky designed and flew the Vought-Sikorsky VS-300, the first viable American helicopter, which pioneered the rotor configuration used by most helicopters today. Sikorsky modified the design into the Sikorsky R-4, which became the world’s first mass-produced helicopter in 1942.