Результаты (
английский) 3:
[копия]Скопировано!
17April1941of Ukrainian aircraft designer who immigrated from Kyiv to the U.S. After the February Revolution demonstrated by the general public as the first ever helicopter-амфібію.This helicopter was modification of the award VS-300".
Igor Sikorsky - outstanding aircraft designer, one of the aircraft building pioneers and the inventor of the helicopter.
переводится, пожалуйста, подождите..