Chapter 1144 Hot Air Balloon Experiment

Style: Science Author: Xuan JiuxiWords: 2140Update Time: 24/02/20 08:42:39
Inside the Southern Timber Base, there are five large wooden sheds, which look a bit like factory buildings. They are about thirty in length and height.

The top of the wooden shed is covered with thick bark and leaves. The key is that it is not completely dead. After the rain washes it, green leaves can continue to grow on it. In addition, the top of the wooden shed is covered with thick bark and leaves. Those vines look like a large tree house when viewed from a distance.

There are even many birds that have settled their nests in it, and the starlight shines on it, giving people a sense of peace and tranquility.

One of the remaining three wooden sheds is used to store and make dried meat.

Although the main task of the Southern Timber Base is to make wood, the soldiers will also hunt in the dense forest during their free time, mainly checking the traps. After the beginning of spring, they can basically harvest something every day.

All the prey hunted were hung in this wooden shed to dry.

There are more than a dozen rows of wooden racks with a height of about three and a half meters. They are now covered with pieces of meat. Two soldiers are busy inside, turning over the pieces of meat.

There are two wooden sheds left, one of which is used to make weapons. Many soldiers are cutting arrowheads according to the molds inside. There are also three fire pits set up inside. Kubeili's several supporting land , is banging with that sledgehammer.

The last wooden shed was temporarily requisitioned by Ye Qiong. Inside the sack was the sea animal skin raincoat that Ye Qiong obtained from the Naning tribe's dam base in winter.

This wooden shed is the workshop that Ye Qiong needs to use. There are also some tool boxes and raw materials drawn from the central tribe. In addition to these, there are also various wooden tables with a dazzling array of various items. recommended equipment.

Marine animal skin raincoats had sleeves and a large hood. Soldiers had to use sharp knives to cut these raincoats open again to obtain a larger usable area.

The hot air balloon itself requires a large amount of fabric, so after these sea animal skins are cut, how to sew them up is a tricky problem. It needs to be as airtight as possible to seal the air to form a super giant air bag.

In fact, Ye Qiong had used airbags a long time ago. When he entered the Dinglong Mountains for the first time, he was forced to use his own animal skin vest to get an airbag out of the water channel.

Compared with animal skin, the biggest feature of marine animal skin is that it has better ductility and is thinner. If ordinary animal skin is used to make a hot air balloon, let alone taking people to fly, the made airbag may not be able to fly on its own. .

The sea animal skins that Ye Qiong brought back from the dam base were several sacks. After being cut open and spread flat on the ground, it was quite spectacular. However, for the sake of safety, the hot air balloon made for the first time should not be too big.

In addition to the largest air bag, the take-off of the hot air balloon also requires the use of ropes and the frame below for weighing.

The rope tribe has ready-made ropes, so just use the strongest one. As for the frame, considering that it doesn’t need to be too big at the beginning, the soldiers can directly weave it by hand, with a diameter of about two meters.

There will definitely be no problem if three or five people fit into a frame of this size.

A week has passed since Ye Qiong brought the sea animal skin raincoat to the Southern Timber Base.

The airbag has almost been sewn at this time, and the large frame has also been woven by the soldiers. It has been placed in a high place for natural ventilation and drying for a few days. At this time, the moisture inside has almost dried. In terms of weight, Much lighter.

With the final air bag completed, the hot air balloon must also enter the test flight stage.

It’s a sunny afternoon, the wind is warm and the sun is shining!

Ye Qiong and most of the soldiers from the Southern Timber Base gathered in front of the wooden shed on the far left.

The soldiers had not seen what a hot air balloon looked like, and did not even have a basic model diagram in their heads. They could only make the various parts of the hot air balloon under Ye Qiong's command, and then continue to be manipulated by Ye Qiong. The conductor splices together.

The burning charcoal fire was carried directly into the large wooden frame. In addition to a spare sack of coal, a square iron bucket was placed next to the charcoal brazier.

What is contained in the iron bucket is grease!

It is used to pour directly into the charcoal pot. Although the fat inside has solidified, as long as it is heated a little, it will turn into a liquid again and become an oil that can support combustion. Just put a spoon into the charcoal pot and the flame will The height can immediately rise to one meter high, and at the same time it generates a huge amount of heat.

If a hot air balloon wants to take off, what it needs is heat energy.

After using hemp ropes to string up the airbags lying flat on the ground, under Ye Qiong's command, the soldiers began to slowly move the airbags to the wooden frame.

Inside the charcoal brazier, the coals were burning red, and hot steam was rising. However, as the air bag enveloped it, the heat immediately gathered in the air and was restrained by the air bag.

The buoyancy generated at the same time directly pushed up the air bag.

The air bag that originally looked soft and somewhat shriveled soon became fuller, and at the same time, under the astonished eyes of the soldiers, it rose into the air.

Soon, the entire airbag was no longer under the control of the soldiers. It came into the air and began to pull up the wooden frame below.

"Buzz..."

The rising force collided with the gravity of the wooden frame itself for the first time. More than a dozen hemp ropes tightened in an instant. After the wooden frame swayed suddenly, it fell to the ground again.

After seeing this, Ye Qiong signaled the two soldiers who were already inside the wooden frame to dig out a large piece of the grease in the iron bucket with an iron spoon, and then threw it directly into the charcoal brazier.

"boom!"

In the charcoal brazier, the grease came into contact with the burning red coals. It was still in a solid state, and then it was like ice cubes placed in a hot pot, melting at a speed visible to the naked eye!

While melting, some flammable gas was produced. These flammable gases seemed to explode in an instant, directly raising the height of the flame in the brazier to more than one meter.

The faces of the warriors inside the wooden frame turned red from the light of the flames.

At the same time, the rising heat gathered in the sea animal skin airbag, creating a huge lift force.

Under the still astonished gazes of the soldiers, the entire wooden frame, carrying some debris and two soldiers inside, left the ground and rose into the air!

Although the two soldiers on top of the wooden frame were mentally prepared, their expressions changed when the wooden frame rose together with the air bags above.