That is Igor Sikorski, and he was in his 40 's when he invented the first practical helicopter.
He did not invent it he 'visualised' it and drew his impression
Leonardo da Vinci not sure when I'm 12 yrs old
As of June 2014, Igor Denisov is 30 years old.
Igor Vyazmikin is 45 years old (birthdate: January 8, 1966).
Igor Zikovic is 34 years old. He was born on December 28, 1976.
Igor Larionov is 50 years old (birthdate: December 3, 1960).
Igor Ulanov is 41 years old (birthdate: October 1, 1969).
Igor Ivanov is 65 years old (birthdate: September 23, 1945).
Igor Jijikine is 46 years old (birthdate: October 8, 1964).
Igor Belanov is 57 years old (birthdate: September 25, 1960).
Igor Bogdanović is 43 years old (birthdate: September 25, 1974).
Igor Smirnov is 69 years old (birthdate: October 23, 1941).