Helicopters
His may not have been the first helicopter to leave the ground, but Igor Sikorsky's place in aviation history was ensured when his VS-300 (left) hovered for a few seconds above Connecticut in 1939.
The aircraft set a series of records, and helped his company establish its reputation for helicopter mass-production.
He had left his home in Kiev in 1919 for the "land of opportunity". Within 20 years, he had built and piloted the world's first successful single-rotor helicopter. He went on to set new standards in speed, altitude and endurance.