Saturday, August 24, 2013

Helicopter

          Helicopter were developed from windmills! This is not so surprising since windmills and helicopter both have large blades that turn in the air. The first person to make windmill blades, which normally move in the wind, turn from an internal source of power, was the 15th century artist, sculptor and inventor, Leonardo da vinci.


          It was not until almost hundred years later, after the development of the airplane, that could take and land from a standing position. American engineers, in 1919, had the technology, But it had been Leonardo, in the 1400c, who had the idea.

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