There are a lot of claims of who made the first flight and this and that and so forth...but the fundamental concept of aviation: yaw, roll and pitch control were pioneer by Wright's Flyer, every aircraft today can trace their ancestry all the way back to the Flyer. They also developed wind tunnel testing and I believe built what to be the first airplane engine.
Another famous Brazilian:
Father Laurenzo de Gusmao - Brazilian Jesuit Priest experimented with flight, earned a Portuguese patent in 1709 and launched a model balloon for the King of Portugal (70 years before the Montgolfier Brothers)
More famous contributors to aviation:
Sir George Cayley - Father of Aerodynamics
Otto Lilienthal - The Wright brothers utilized his data in their development, Lilienthal was never able to corretly apply his data, but the Wright brothers discovered his mistake and was able to incorporated it successfully in making their first flight.
Octave Chanute
Samuel Langley - Director of the Smithsonian, he was competing with the Wright brothers for the first flight. His model flew, but when he build the full-size aircraft, the Aerodrome, he never realize the need to add more support and strengthening the airframe so his aircraft crash on both try. After he passed away, in an effort to redeem their director's name, rebuilt his aircraft correctly with added supports and everything and it flew. For a few years, the actually put that aircraft on display in the Smithsonian with a plague proclaiming that it was the first aircraft to fly.





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