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Key terms: sikorsky aircraft russian engine igor sikorsky design aviation vityaz helicopter sons flying oclc kiev pan flight new york father woods rotor olga united states sergei inventors connecticut pioneers tania paris academy polish earned patent served igor ivan muromets returned direct lift religious biography sikorsky aircraft corporation hall of fame technologies construction russian orthodox saint petersburg sikorsky memorial Search external links cited by footnotes on Wikipedia page Igor Sikorsky: |
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