IGOR IVAN SIKORSKY (1889-1972). American (Ukrainian-born) aeronautical engineer. Sikorsky preparing to demonstrate a VS-300 helicopter, Bridgeport, Connecticut, 20 May 1940.IGOR IVAN SIKORSKY (1889-1972). American (Ukrainian-born) aeronautical engineer. Sikorsky preparing to demonstrate a VS-300 helicopter, Bridgeport, Connecticut, 20 May 1940.
IGOR IVAN SIKORSKY (1889-1972). American (Ukrainian-born) aeronautical engineer. Sikorsky preparing to demonstrate a VS-300 helicopter, Bridgeport, Connecticut, 20 May 1940.