Biplane
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A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircr
First World War Sopwith Camel biplane
1920s biplane hang glider
The Gloster Gladiator, a biplane World War II fighter
Soviet Antonov An-2 biplane from the 1940s
Otto Lilienthal
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Karl Wilhelm Otto Lilienthal was a German pioneer of aviation who became known as the "flying man". He was the first person to make well-documented, repeated, successful flights with gliders, therefor
Lilienthal, c. 1895
Lilienthal in mid-flight, Berlin c. 1895
Models of his gliders
Restored 1894 glider displayed at the National Air and Space Museum in Washington, D.C. It is one of five surviving Lilienthal gliders in the world.