What was Otto Lilienthal's occupation beside his aviation experiments?
Physicist
Engineer
Doctor
Lawyer
Answer
Otto Lilienthal was an engineer, but he was also a pioneer of human flight. He built and flew several gliders in the late 1800s, and his work helped to pave the way for the development of heavier-than-air aircraft.
Flight of the Eagle: Testing Your Knowledge on Otto Lilienthal, the German Aviation Pioneer