Dragon-shaped sky lanterns transmit signals. On 1783, the French montague brothers released the first balloon filled with hot air in Europe. French brother Robert was the first person to fly into the sky in a balloon filled with hydrogen. ?
In many different countries in the world, balloons are also used as decorations to celebrate this big day. Balloons of different colors can be seen on the streets in many places. In some opening ceremonies, people will puncture balloons, which symbolizes the important moment of the opening ceremony and can also condense the atmosphere.
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Composition of hot air balloon
1, hanging basket
The hanging basket is made of rattan, which can reduce the impact force when landing. Four special liquefied gas bottles for hot air balloons and instruments were placed at the four corners of the hanging basket. The hanging basket is also equipped with flying instruments such as thermometer, altimeter and lifting platform.
2. Tools
Altimeter: height indicator; Vertical speedometer: shows the rising and falling speeds; Thermometer: shows the air temperature in the balloon.
3. Burner
The burner is the heart of a hot air balloon, and the energy of burning compressed gas is 150 times greater than that of ordinary household gas stoves. The ignition burner is the fire of the main burner, which makes the air inside rise rapidly to generate lift. In addition, there are two combustion systems on the hot air balloon to prevent failure in the air.
4. Balloons
Balloon is the fabric part of balloon, which bears hot air and high temperature. It is usually made of colored nylon fabric. The standard shape is water drop, and it can also be made into various special-shaped balls. The air contraction port is located at the top of the fabric, and the balloon can control the release of hot air.
It covers the air shrink panel, sometimes called the top hat, which is the top of the umbrella, or the top of the spring. An open hot air balloon is like a parachute, and a partially opened parachute valve is a conventional method to cool the air in the balloon.
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