Hot air balloon Montgolfier brothers, and had its first public demonstration on 4 June 1783 with an unmanned flight lasting 10 minutes, followed later that year with manned flights. The 1785 Rozière balloon, a type of hybrid balloon, named after its creator, Jean-François Pilâtre de Rozier, has a separate cell for a lighter than air gas (typically helium,) as well as a cone below for hot air (as is used in a hot air balloon) to heat the helium at night. Hydrogen gas was used in the very early stages of development but was quickly abandoned due to the obvious danger of introducing
Gatineau Hot Air Balloon Festival festival's first volunteer and a tree was also planted on site in her honor in conjunction of the festival's 20th Anniversary which also honored the founder of the festival. After that event, he never piloted a hot-air balloon and left his general manager spot of the Festival afterwards - some speculations were that the new city of Gatineau administration of Yves Ducharme tried to force him out of the job by offering a spot for the new city as chief of communications. He was handled that position for a few months during rehabilitation, but the position was later removed and