description About
In the 1920's, early auto gyros made breakthroughs in rotating wing design, and by the 1930's military interest propelled helicopter development. Advances in controls, and the availability of lightweight turbine engines finally made a practical helicopter.
Info
- verified Status: Ended
- person By: Rick Gordon
- calendar_month Release Date: 1992-03-04
- video_camera_front Companies A+E Networks
- tag Season: Season 2
- timer Episode Runtime: Mins
- star Rating: 0 / 10
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