Aviation in the 20th Century - Bernie Day 3
https://drive.google.com/file/d/1ZitfnB-JHB6SkIobgEo6c-dkNhQRCh9s/view?usp=sharing
To tell the story of aviation, we do need to start by noting there are two kinds of aircraft:
••Lighter-than-air craft such as balloons, dirigibles, and blimps;
••Heavier-than-air craft such as airplanes and helicopters.
The Mongolfier brothers first flew the first lighter-than-air craft--a hot-air balloon in 1783.