Categories: Disambiguation (disputed — see talk page) Igor Sikorsky Igor Ivanovich Sikorsky (May 25, 1889 – October 26, 1972) was a Russian of Polish descent and a pioneer of aviation who designed the first four-engine aeroplanes and the first modern helicopter. ... Sikorsky is an American helicopter manufacturer founded in 1923 by the Ukrainian born American Igor Sikorsky, the inventor of the first successful helicopter design, upon which the majority of subsequent helicopters were based (though he did not invent the helicopter itself). ... Sikorsky is an American helicopter manufacturer founded in 1923 by the Ukrainian born American Igor Sikorsky, the inventor of the first successful helicopter design, upon which the majority of subsequent helicopters were based (though he did not invent the helicopter itself). ... Sikorsky is a lunar crater that is located in the southern hemisphere on the far side of the Moon. ... . Władysław Sikorski during World War II. Władysław Eugeniusz Sikorski (May 20, 1881 – July 4, 1943) was a Polish military and political leader. ...