![](https://thegeebee.com/wp-content/uploads/2020/07/Gee-Bee-R2-1933-Long-Tailed-racer-with-flaps-300x155.jpg)
Zantford Granville’s Double-Hinged Flap
Did you know Zantford Granville was among the first, if not the first in the U.S. to patent a flap system to control aircraft airspeed and increase lift, especially while landing? And Zantford, or Grannie as he was called, didn’t even have a formal high school education.