Igor Sikorsky United States 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. Igor Sikorsky was born in Kiev, Russian Empire (in present-day Ukraine), the youngest of five children. His father, Ivan Alexeevich Sikorsky, was a professor of psychology of Kiev St. Vladimir University, a psychiatrist
Sikorsky (crater) named after Igor Sikorsky, a Russian-American aviation pioneer. By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Sikorsky. Sikorsky (crater) Sikorsky is a crater on the far side of the Moon. It is situated behind the southeastern limb of the Moon, just out of sight from the Earth. It lies to the northwest of the huge walled plain Schrödinger. To the northwest is the smaller crater Moulton. In 1967 the Lunar Orbiter 4 photographed this region in high resolution, discovering a 310-km-long gouge cutting through