Otto Lillienthal

The German, Lillienthal, raised awareness of the serious study of flight when he performed countless gliding flights on the fringes of Berlin. From the 1870s, when he started his research with kites, he progressed to fixed-wing gliders and was the first man to achieve sustained controllable flight. He was killed in a glider crash in 1894. His pioneering work, Birdflight as the basis of the Flying Art, was a compilation of aerodynamic knowledge of the time.