Watch First Flights with Neil Armstrong Season 3 Online
- COUNTRIES: United States of America
- Subtitles: English
From Cierva's breakthrough in autogyro design, to the state-of-the-art BK-117, the heart of the helicopter story has been the rotorhead. Early helicopters were complex, dangerous flying machines, prone to failure. For the men and women who took the controls, concentration and daring were essential.
