Screen Shot 2020-06-10 at 20.36.24 Published on June 10, 2020 in Igor Ivanovich Sikorsky (25 May 1889–26 October 1972)Full resolution (793 × 1000) ← Previous Next → Igor Sikorsky in the cockpit of a Sikorsky S-48 (R-5) helicopter. (Smithsonian Institution National Air and Space Museum)