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Many people made contributions to the development of airplanes. Early enthusiasts made discoveries concerning wing shape, engines, propellors and framing the machines. Many were unsuccessful and others modified their ideas. George Cayley built a model glider and flew it in 1804. - A French inventor, Penaud developed and flew a successful rubber powered model over 200 feet in the 1870's. Many other people flew gliders carrying pilots throughout the late 1800's. Otto Lilienthal made over 2,000 glider flights. Many people tried steam engines before going to early gasoline engines. The list of short and often low flights is very long.

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12y ago

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