He is one of the most important people in the history of aeronautics .
Sir George Cayley , 6th Baronet ( 27 December 1773 -- 15 December 1857 ) was an English engineer , inventor , and aviator .
George Cayley is one of the most important people in the history of aeronautics .
Sir George Cayley , 6th Baronet ( 27 December 1773 -- 15 December 1857 ) was an English engineer , inventor , and aviator .