![Igor Sikorsky, Russian-born American aircraft designer. [Credit: Courtesy of Sikorsky Aircraft]](http://images.bookrags.com/images/eb/9381.gif)
Igor Sikorsky, Russian-born American aircraft designer. [Credit: Courtesy of Sikorsky Aircraft](born May 25, 1889, Kiev, Russian Empire—died Oct. 26, 1972, Easton, Conn., U.S.) Russian-U.S. pioneer in aircraft design.
After studying engineering in Kiev, he set up his own shop to develop the helicopter. In 1910, after failing to build a workable model, he turned to fixed-wing airplane design, and in 1913 he built the first four-engine airplane, with an innovative enclosed cabin. He immigrated to the U.S. in 1919. In 1931 he produced the twin-engine amphibian aircraft that became the model for Pan American World Airways' “Clipper.” In 1939 Sikorsky finally realized a viable helicopter design. He directed his company, a division of United Aircraft Corporation, from 1929 to 1957.
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