Igor Sikorsky was a Russian aeronautics engineer and inventor known for crafting the first four-engine plane and the first working helicopter.
Born in Kiev, Russia, on May 25, 1889, Igor Sikorsky studied in his home city and Paris before choosing to follow his own vision for aeronautic design. He built the first four-engine plane in 1913 and, after decades of development, would craft the first working helicopter, with its first test flight in 1939. A recipient of many honors and accolades, Sikorsky died on October 26, 1972, in Easton, Connecticut.
Igor Ivanovich Sikorsky. (2013). The Biography Channel website. Retrieved 06:04, Jun 19, 2013, from http://www.biography.com/people/igor-sikorsky-9483585.
Igor Ivanovich Sikorsky. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/igor-sikorsky-9483585 [Accessed 19 Jun 2013].
"Igor Ivanovich Sikorsky." 2013. The Biography Channel website. Jun 19 2013, 06:04 http://www.biography.com/people/igor-sikorsky-9483585.
"Igor Ivanovich Sikorsky," The Biography Channel website, 2013, http://www.biography.com/people/igor-sikorsky-9483585 [accessed Jun 19, 2013].
"Igor Ivanovich Sikorsky," The Biography Channel website, http://www.biography.com/people/igor-sikorsky-9483585 (accessed Jun 19, 2013).
Igor Ivanovich Sikorsky [Internet]. The Biography Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.biography.com/people/igor-sikorsky-9483585.
Igor Ivanovich Sikorsky, http://www.biography.com/people/igor-sikorsky-9483585 (last visited Jun 19, 2013).
Igor Ivanovich Sikorsky. The Biography Channel website. 2013. Available at: http://www.biography.com/people/igor-sikorsky-9483585. Accessed Jun 19, 2013.