Julio Cezar Ribeiro de Souza, Brazilian aeronautical engineer (Vila de São José do Acará, Pará State 13 June 1843 – Belém 14 June 1887)

Discovered important principles in aeronautics

Patented the fusiform or asymmetrical form of balloons for aerial navigation (1880) and a perfected system of balloons (patented in Brazil, French, Great Britain, United States, Germany, Russia, Portugal, Belgium, Austria, Italy and others countries) in 1881  

Invented the dirigible (1881), before Charles Renard and Arthur Krebs (1884)  

Exposed his theories to experts in France becoming Associate member of Societé Française de Navigation Aerienne (1881)

Built Santa Maria de Belém, the greatest of world’s balloon until then (1883)

SOME BIBLIOGRAPHY 

A navegação aérea (1880)

Memória sobre Navegação Aérea (1881)

Memória descritiva para um Sistema de navegação aérea por meio de balões pairadores (1881)

Les ballons planeurs (1882)

Navegação aérea: estado desta importante questão (1882)

A direção dos balões/La direction des ballons (1884)

Fiat Lux (1887)