Orville Wright was an aviation pioneer who alongside his brother, Wilbur, built and flew the world's first successful motor-operated airplane, the Wright Flyer, a heavier-than-air aircraft. The three-axis control system developed by the brothers remains standard on fixed-wing aircraft of all kinds. Orville also served on the board of the National Advisory Committee for Aeronautics (NACA).
6 Les Paul
10 Samuel Morse
13 Dean Kamen
15 Tom Scholz
A multi-talented personality, Howard Hughes was one of the richest person of his time. A business tycoon, he made big investments in films and aviation industry. Passionate about flying, he set numerous flying records, and also risked his own life in process. Howard Hughes who inherited his family business and became millionaire at the age of 18, was later on troubled with mental illness and turned recluse.