Montgolfiere ballon

In the small French place Annonay, south of Lyon, possessed the family Montgolfier a paper factory. The brothers Etienne and Joseph de Montgolfier experimented much with paper and discovered that with air filled paper bags ascend, if thereby air is heated up. They attributed this discovery to the fact that certain components of the smoke let the paper bags take off. It was recognized only later that air gets by heating up a smaller density and thus becomes easier. Their discovery brought it on the idea to build a large balloon of paper. After many further experiments the brothers Montgolfier could present their invention of the public on 4 June 1783 for the first time. The balloon had at that time a volume of approximately 600 m ³ and reached a flight altitude of approximately 1000 M. on 19 September became an advancement of the balloon the king Ludwig XVI. demonstrated. In a pasture basket, which was fastened down to the balloon, the first passengers of aviation were accommodated: a sheep, a cock and a duck.