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 Malkov is 46 years old (birthdate: February 9, 1965).
Igor Vyazmikin is 45 years old (birthdate: January 8, 1966).
Igor Astarloa is 34 years old (birthdate: March 29, 1976).
Igor Ivanov is 65 years old (birthdate: September 23, 1945).
Igor Cavalera is 41 years old (birthdate: September 4, 1970).
Igor Cassina is 39 years old (birthdate: August 15, 1977).
Igor Ulanov is 41 years old (birthdate: October 1, 1969).
Igor Belanov is 57 years old (birthdate: September 25, 1960).
Igor Bogdanović is 43 years old (birthdate: September 25, 1974).