/kloc-At the beginning of the 8th century, according to the principle that hot air is lighter than cold air, people used hot air as floating gas to make balloons to take off. 1709 On August 8th, in the palace of the King of Portugal, a Christian priest Gusmao performed a hot air balloon. 173 1 year, Russian Kliangkutno also made a cloth balloon, which rose to the top of a birch tree. After decades of experiments, at 1783, the hot air balloon finally manned the sky.

1783165438+1October 2 1, the first manned balloon was launched. This amazing move caused a sensation in Paris at that time. At that time, roads were blocked and people flocked to the Long Bang proving ground. I saw a huge yellow and blue balloon hanging between the two masts, and there was a raging fire below. In the afternoon 1: 45, Louis XVI's siege cannon made a loud noise, and the Montgomery brothers standing under the balloon cut the cable with a big knife, and the balloon floated into the air.

According to records, the balloon flew in the air for 25 minutes, flying at a height of about 900 meters, and finally landed safely in a wheat field in the suburbs of Paris. The two men climbed out from under the collapsed balloon without any harm. They shook hands and congratulated each other, and finally they all came back alive.

Rozier and Alandez became the first people in the world to fly into the sky.

Since then, manned balloon flight has become popular in Paris and other big European cities. But Alandez's interest in this is greatly reduced. Never take part in this experiment again. However, Rozier enjoyed it, ignored his fiancee's entreaties and continued his flight test. He even made an ambitious plan to cross the English Channel.

Unfortunately, on June 5th, 1785, when Rosier tried to float a balloon filled with hot gas and hydrogen, the balloon caught fire and crashed. Thus, Rozier won another first in aviation history-the first person who died in an airplane accident.