Hot balloons are the earliest human flying tool. The world's first hot balloon was invented and manufactured by the french paper maker's montegofield brothers. The idea of creating hot balloons was inspired by the fact that they saw shreds of paper flying on the flames, and that was the idea for brothers to use the hot air to make aircraft. On 21 november 1783, the montegofield brothers carried out the first manned balloon lift experiment after a balloon carrying animals. The flight was carried out 120 years earlier by the bitter brothers using a manned aircraft。
Thermal balloons consist of three parts: a bag, a basket and a heating device. The skin of the balloon is made of reinforced nylons (some of which are made of scrubbers) and, although of light quality, it is very strong and its bladders are inflatable; the baskets are usually made of vine strips, which act as buffers when landing; and the burner is the engine of the balloon. As we can see from this, the balloons have no rudder, and they go up with the wind and are full of uncertainty。
Against this background, in 1784, the first manned craft was designed by the french roberts brothers. The first flight of this hydrogen-filled craft was not a success because, at this critical juncture, as heights increased and the airbags expanded, the roberts had to pierce a small hole with a small knife in order to bring safety to the ground. From this test flight, they were given the important revelation that the airbags of the craft should be fitted with a vent. Then, with the development of the industrial revolution, steam engines, internal combustion engines and electric motors were introduced, creating more favourable conditions for the improvement of the ship power system. After many improvements, manned craft with power systems have become an important tool for human aviation。
Seeing here, many people wonder: what is the principle that balloons and boats can rise and fall freely
The principle is simple, and it was applied in our country more than 2000 years ago. One of the most important inventions of our country's ancient times was the qinhan period, when it was recorded in the book "assemblée de la paix en l'ai yu, 15 bird's eggs", which read: "ai's fire makes the chicken fly." the idea is to put a burning fire in an egg shell, which can fly。
But why are eggshells flying? Modern thermals give a good answer: moving down when thermal gas swells, so that the currents drive the object upwards. The perforation is the use of this elasticity (also called reaction). Specifically, the heat balloon fires are very powerful in the fireplaced by the burner and have a strong reaction effect. So, human heat balloons were invented on that basis。
