Via the 18th century, men and women were inflating balloons of fabric or canvas with hot air and sending it aloft, the Montgolfier brothers heading as far as to experiment with initially animals in 1782, after which, when altitude didn't destroy them, human beings in 1783. Come sapere chi vede https://reidowbhn.empirewiki.com/9102737/details_fiction_and_balloon_arch_frame