![The Secret of Flight](/dq-content/themes/movie/img/no-cover.jpg)
1 Season
1 Episode
The Secret of Flight - Season 1 Episode 6
After the lift, stability and control problems were solved, a propulsive system was needed to make the aircraft fly. The first propulsion device - the propeller - is still in use today. Dr. Lippisch explains the design of the propeller and demonstrates the lifting propeller - the Helicopter Rotor.
- taona: 1959
- Firenena: United States of America
- Genre: Documentary
- Studio: PBS
- Keyword: educational, historical documentary
- tale: Sam Becker
- Cast: Alexander Lippisch