Yes, everyone should know that air is a mass substance.

The same volume of air, with different temperatures, has different densities and masses.

It's like water and ice, the density of water becomes less when it freezes. When you press the ice to the bottom of the water, it will always float up, because the ice is less dense than the water because there is air in it.

The principle of a hot air balloon is very simple: the air inside the balloon is heated to become less dense and less massive than the relative temperature of the same volume outside the balloon, so the balloon is buoyant and lifts off (like ice cubes floating in water).

For aviation and aircraft in a broad sense, this buoyancy is called lift.

For example, the hot air balloon designed by Hantang Group this time should have a balloon volume of 6,540 cubic meters, and the total air mass in the balloon should be 8,500 kilograms at a sea level temperature of 25 °C.

When the alcohol pressure burner heats the air inside the balloon, the air inside the balloon expands, the density decreases, and the excess air is discharged from the bottom of the balloon after expansion.

When the 6,540 cubic meters of hot air in the capsule reaches 100 °C, the mass becomes 5,070 kilograms, which is 3,430 kilograms lighter than the same volume of air, and the balloon generates 3,430 kilograms of lift.

If the total mass of the hot air balloon flight at this time is less than 3430 kg, it can rise.

It should be twenty-four meters in diameter and thirty-one meters in height, and a total of 1,500 kilograms is enough to calculate from the weight of silk and combine it with tung oil, casein glue, ropes, hanging baskets, various measuring instruments and alcohol pressure burners, and then count the weight of Principal Liu Haiyang.

Theoretically, with a little more heating, you can easily lift equipment below 2,500 kilograms.

Of course, these are just calculations, and some people have taken out the renderings, and the surface of the hot air balloon is still colorful, and it looks really good under the blue sky.

Technician Pan Keshu saw this picture, pursed his delicate lips, and "popped" and "snapped" and sent several sets of information on Kirov-class large airships, all with renderings, which absolutely shocked everyone.

Some technicians wailed at the time and said: "Lifting dozens of tons, hundreds of tons of big guys, this is the real thing of men, we are just toys ......"

There was a sudden silence on the Internet.

Technician Lu Luchang and everyone cleaned up the residential area of Miaoli Petrochemical Base, so that everyone could live more comfortably.

Technician Lu Luchang said to the people at the headquarters: "Have they started making hot air balloons?" ”

The person at the headquarters said: "No, some people have proposed that biogas can be liquefied to be used as a heat source, and it is said that the weight is lower and the heat efficiency ratio is higher, and they are arguing." ”

"Ah, this way, it's better than we first thought."

Technician Lu Luchang and everyone opened the working face of the oil production point, built the basic structure first, and then built several workshops, and then waited for the equipment to come up later.

Technician Lu Luchang said to the people at the headquarters: "Have they started making hot air balloons?" ”

The person at the headquarters said: "No, Xiao Pan technician proposed to change a fireproof coating, which can make the hot air balloon tolerate higher temperatures." ”

"Which little Pan? Is that the careful-eyed little Pan? ”

"yes, that's the one you said last time he was prettier than a girl, and he ignored you-"

Lu Luchang technician and everyone built four line platforms on the top of the mountain according to the wind direction, each of them is more than 500 meters apart, so that it is convenient for the hot air balloon to float up and stop at random, and later they opened up some wasteland together, planted vegetables, and some other things.

Technician Lu Luchang said to the people at the headquarters: "Have they started making hot air balloons?" ”

The people at the headquarters said, "No, they are not satisfied with the wire rope and the steel cable, and they are debating a new method." ”

"Damn, this won't delay the processing of other equipment!"

"The point is that the people in charge of this processing are divided into two factions, and they both have to use examples to convince each other."

"Well, the result of practice is the only criterion for testing the truth, and the process of practice is like crossing the river by feeling the stones, as long as you look at the results, everything is clear."

The evening in the Miaoli Mountains is beautiful.

A golden-red sunset slowly set behind the mountains higher in the distance.

In the distance, wild birds are chirping around the trees.

There are also wild monkeys shouting for a long time and a short time, it is calling its children to come home, right?

At this time, the mountain breeze seems to have stopped, and the silence seems to be setting off the happiness of the animals.

But happiness is theirs.

Actually, God is not so kind.

During the day, when the sun rises or an hour or two before it sets, the weather is usually calmer and the air currents are steady due to the reduction of the sun's thermal radiation.

This is the best time to fly in a hot air balloon.

Technician Lu Luchang hugged his knees alone, sat on a rock, and silently looked at this increasingly familiar place.

The last time I visited, it was really hard to be attacked by the natives, and if it weren't for the security guards, who were injured to protect themselves.

A long sigh.

"Hahaha, I thought people who like to camp alone are more able to endure loneliness!"

Captain Sun Qiang's hearty laughter seemed to make the evening even happier.

Is he really happy?

Captain Sun Qiang held two boxes of canned fruits, as well as his own waist-type stainless steel flat wine jug.

This is what he brought from that world, of course he knows that Hantang Group will definitely be able to produce food-grade stainless steel products, but he has been with him for many years, and he has feelings.

He sat down next to Lu Luchang's technician, pulled out the jungle tactical knife, "brushed" and "brushed" a few times, opened the tinplate can, and broke four bush branches with his hand.

The two of them ate it, and the air was filled with the sweet smell of canned fruit, and the pungent taste of high liquor.

"People who engage in oil have always been lonely, whether they are extracted or maintained, like me, if they want to get some oil in that side of the world, they still have to hang the identity of piracy, just like people who watch piracy, sneaky and unatmospheric.

As for me, I can't help it, just this, mixed bowl of rice. Now, this qiē is ours, get them out, hand them over to our equipment, let our production equipment be upgraded, so that everyone here can live a good life, the big dog has food, the puppy also has food, damn it, after thinking about it, I was moved by myself. ”

Captain Sun Qiang took a sip of wine on his back, and he didn't know when the animals were quiet.

"So, I'm enjoying this loneliness, loneliness makes me so great!"

"It's loneliness that makes me so beautiful, right?" Lu Luchang said in his heart.

Technician Lu Luchang thought for a moment and said with a smile: "It's like the first time I came here to take an adventure, and I had to risk my life; The second time I came here was to endure loneliness, maybe a long time of loneliness; There may be hard labor after that...... And later? ”

"The years of hard work have passed, and our current equipment is better than when I was stealing mining, and it is easy for the ancients to do more work...... After that, it will be a good day, without any fear. ”

"Were you scared? Why haven't I ever felt that way? ”

"People who can really see farther will not only be afraid, but will also have ...... Maybe it's because I'm getting older. ”

Technician Lu Luchang said to the people at the headquarters: "Have they started making hot air balloons?" ”

The people at the headquarters replied: "They have built it, test flights tomorrow morning, and the first batch of goods will be delivered the morning after tomorrow, all of which are daily necessities. ”

"Two?"

"Yes, they figured out the best cost-effective solution, two at once, and now they're building a third or fourth, man, that's the power of industrialization."

Lu Luchang technician smiled, fart industrial, borrowed the equipment he brought, this is.

After the test flight, the people at the headquarters told them that they would definitely come tomorrow morning and be ready to greet them.

The Miaoli Petrochemical Base cheered, and the Ming people and natives all shouted happily.

Hantang Group will not and will not forget everyone who has contributed to it.

In the early morning of this day, Principal Liu Haiyang, with his own flying team and two pot camel cars, rumbled along the highway from Gelanza City to Taipei and went directly to the Miaoli area.

They then turned off the road and got as close as possible to the Miaoli Mountains to find the most suitable upwind direction.

It's a big mountainous area, and everyone seems to have plunged headlong into the embrace of the mountains.

It's really different from the beautiful Tainan Great Plains.

Flying a hot air balloon requires a group of people to work together because the work of a hot air balloon on the ground is very tedious and it takes at least four people to make a hot air balloon take off.

They first spread the balloon on the ground, then connected it with the hanging basket on the side, and used the battery pack carried by the camel machine car to bring up a small DC blower, the wind blew into the balloon, so that the balloon inflated little by little, when it was fully deployed, Principal Liu Haiyang began to ignite the liquefied biogas burner, which first spewed out a flame more than one meter long, and began to directly heat the air in the balloon.

The hot air slowly raised the balloon to a position perpendicular to the hanging basket, and at this time, Principal Liu Haiyang adjusted the flame to a height of more than four meters, and only the liquefied biogas burner could be heard whirring, and the scene was really spectacular!

In a few moments, this balloon 1 will be ready to take off.

Principal Liu Haiyang adjusted the size of the flame on the hanging basket.

At this time, he only has the ability to control the internal temperature of the balloon.

All the power of the hot air balloon is the liquefied biogas burner, which has no rudder and must move in the direction of the wind.

It's just that the wind direction is different at different heights, at different times, and in different places, and if you want to adjust the direction, you need to find different wind layers.

At this time, the rise and fall of the hot air balloon is only related to the air temperature inside the balloon.

The friends below him quickly fastened the hook under the sisal wire sling and the lifting ring on the wooden container, and Balloon No. 1 rose at a speed of five meters per second, lifting the two-ton wooden container beautifully.

Hot Air Balloon No. 1 could only obey the arrangement of the wind at this time and honestly flew up towards the Miaoli Mountains.

Captain Liu Haiyang picked up the duplex walkie-talkie and said to the friends who were busy working on Balloon 2 below: "Brothers, wait for me on the other side of the mountain......

Thanks to the support of old friends yezhongye, alliance leader Mei Lezhi, Fat Horse 123, Ling Buxu, River Crab V5, and Brother Jing, and thank you to the friends who helped this book survive in various ways.

This month, I want to compete for the monthly ticket list again, and I really hope that my friends will help me.