In 1930, he became one of the three members of the military junta which ruled Brazil between October and November 1930. When the junta acquiesced to revolutionaries, Noronha initially remained as minister of the Navy in the administration of President Getúlio Vargas.
Noronha was one of three members of a military junta that ruled Brazil from October to November 1930. After the junta yielded to revolutionaries, he continued his role as the minister of the Navy in the government led by President Getúlio Vargas.