Sir Geoffrey de Havilland
When Sir Geoffrey de Havilland was younger he took an interest in car engines and that eventually led him to designing his own engines and after some time designing engines for aircraft and the aircrafts themselves. His first aircraft was built in 1909 but the test flight was unsuccessful. A year later de Havilland built his second aircraft in which he set a new altitude record of 3.2 km. After his success he work in several aircraft companies, even in Royal Aircraft Factory and designed some World War 1 biplanes. In 1920 de Havilland stared his own company. From there he designed large number of aircrafts like the TIGER MOTH and became one of the most successful pioneers in early aviation.