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
The Fantastic Flying Journey purchase at Amazon.com One day, a hot air balloon attached to a huge straw house, lands in the garden of the Dollybutts. The fat old man who owns it is Great-Uncle Lancelot. He tells Mrs Dollybutt and her three children that he is going to find his brother, Perceval, who is lost in the jungles of Africa, looking for gorillas. Perceval, a scientist, invented a magic dust which enables people to communicate with animals. Lancelot takes the three children, Emma, Ivan and Conrad with him in the hot air balloon, which he has called Belladonna, to track Uncle Perceval. On