Vought-Sikorsky VS-300 Vought-Sikorsky VS-300 The Vought-Sikorsky VS-300 (or S-46) is a single-engine helicopter designed by Igor Sikorsky. It had a single three-blade rotor originally powered by a 75 horsepower (56 kW) engine. The first "free" flight of the VS-300 was on 13 May 1940. The VS-300 was the first successful single lifting rotor helicopter in the United States and the first successful helicopter to use a single vertical-plane tail rotor configuration for antitorque. With floats attached, it became the first practical amphibious helicopter. Igor Sikorsky's quest for a practical helicopter began in 1938, when as the Engineering Manager of the Vought-Sikorsky Division
Igor Sikorsky Kyiv Polytechnic Institute Igor Sikorsky Kyiv Polytechnic Institute The National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" (NTUU "KPI") is a major university in Kiev, Ukraine. In January 2012 Webometrics Ranking KPI made it into top 1,000 – taking 957th place out of 20,300 universities, 510th (February 2013). The institute was founded on 31 August 1898 as the Kiev Polytechnic Institute of Emperor Alexander II, but its current building complex was not built until 1902. Until then, the institute was renting out its space at the building of Commercial School located on Vorovsky Street. At that time it had four departments: