"Look, it's floating, it's floating." A large balloon, with a wooden box, slowly rose into the sky in the eyes of everyone.

This is Yang Heng's first test of the hot air balloon, however, he did not let the hot air balloon rise to how high, this hot air balloon is dragged by the four ropes below, and these four ropes are firmly tied to the four iron rings on the ground, that is to say, when it rises to the length of the rope, it can no longer rise, at this time, it is the time for Yang Heng to check the quality of this hot air balloon, to see if there are any defects, if there are defects, let people repair it again, where the sphere is a little bad, Again, it was replaced.

"Alright, you guys drag it down." After the inspection, Yang Heng shouted loudly above, and he took out an iron sheet and buckled a furnace with an iron sheet, so that the flame of the furnace would not burn out the hot air balloon, and when the hot air balloon was lifted into the air, someone could support the hot air balloon to make the ball full of gas, but when it fell, if the furnace was not blocked, it would be easy for the flame in the furnace to burn out the hot air balloon, which was also one of the disadvantages of inflating the balloon with a blowtorch.

However, this furnace, Yang Heng is also attentive, he has gone through many tests, only to create such a use of natural wind, that is, a little breeze will make the flame into a jet, that is, there is no wind, when the furnace is burned, it will also be a jet of flames, only in this way can the hot air balloon be lifted into the air, however, Yang Heng estimated. This hot air balloon doesn't rise too high. This flame determines its ability to rise into the air. Once the oxygen in the air decreases with altitude, it will not continue to rise into the air.

"Click." It's not good, the bottom of this box was cracked by the ground, this is something that Yang Heng didn't expect, everything was considered, but he didn't take into account the impact of the moment he landed.

"Xuewen, this, I'll thicken this plank again." Uncle's face flushed. "Uncle. I don't blame you, it's just so thick, I didn't take it into account, you just get a few discarded tires, fix the waste tires around the perimeter of the box, and the bottom, and there will be no more such a situation. ”

Yes, it is Yang Heng who did not consider the problem of shock absorption, and now that he has considered it, there will be no more problems in the future. Besides, a lot of waste tires have been replaced in their own transport fleet. Just use it, even, directly use new tires is also possible, and even some special tires can be made, however, or use waste it, this waste tire needs to be used in many places in the future, why, this, has now constituted pollution, because, this waste tire has not yet constituted a reuse chain, that is, there is no waste utilization of that technology, waste is waste, nature is a pollutant, then it is used in all aspects as a shock absorbing thing, it is still possible, such as, Some rubber pads made purely for shock absorption are replaced by these waste tires, instead of making new rubber pads, and even some tires that can be used after being replaced, they are modified and installed outside the wheels of wood-wheeled horse-drawn carriages and ox carts.

"Fifth uncle, can you go and urge the factory to make the miniature steam engine I need as quickly as possible." Yes. Yang Heng is now waiting for the miniature steam engine, without this thing, even if the hot air balloon goes up to the sky, it can only float with the wind, and it is impossible for Yang Heng to take more people up to adjust the direction with artificial power.

"Okay, eldest nephew, I'll urge them to get to work day and night." "Fifth uncle, don't be too anxious, you need to rush to work, but this quality must be grasped well, otherwise there will be a problem in the sky, and it will be a big deal."

Why does Yang Heng have to use a miniature steam engine as a power, if he directly uses a miniature boiler, as long as it is jetted in one direction, the balloon will move in the other direction.

In fact, this is not impossible, however, how much water does this need to be brought up, first of all, you need to bring coal, and then you need to bring water, and this water will be consumed with gas consumption, short trips can be directly replaced by boilers, and if you want to use it for a long time, it will not be, and with a micro steam engine, if you do the recycling of steam, you can greatly save water, although there is still consumption, but this consumption is really very little, negligible.

"Ah Lang, Your Majesty asked someone to pass you into the palace." This made Li Er discover again, such a big thing can be seen from a long distance, if Li Er doesn't know, Yang Heng definitely doesn't believe it.

"I've seen Your Majesty." "Excuse me, come, learn literature, come to my side, sit." Li Er is now becoming more and more polite to Yang Heng, even the eldest grandson is also looking at Yang Heng with a smile on the side.

"Xuewen, my hostage is about to be eighteen years old, right?" "Yes, Your Majesty, the minister is ready," "That's good, that's good, I'm waiting to report to my grandson, you also know, you are the leader of your Yang family, if you don't have an heir, you are not a complete family, are you?" ”

Li Er called Yang Heng into the palace, and did not go straight to the point, but chatted with Yang Heng, what does this mean, is it for me to say it myself?

"Xuewen, when will you send my hostage and Yuzhang to the palace, just do things with Qian'er, then do a ceremony first, and Yuzhang, I can officially marry you this year, I think, it's better to let her live in the palace for a period of time in the future." "Okay, Niangniang, when I go back, I'll send Changle and Yuzhang into the palace, but Changle will come to stay for a few days, then, there is no need to do any more rituals, right?"

"Well, yes." Yang Heng knew that their purpose was not here, "Your Majesty, Niangniang, the minister has made a new thing, and I want to invite Your Majesty and Niangniang to the minister's house to watch the ceremony." ”

"Is it the big round ball, I heard that the ball can still go to the sky, but it is not high, it can fly four or five feet high?" "Yes, Your Majesty, but it's not four or five zhang high, but it can rise to a height of several hundred zhang, and that height is very useful for both battlefield command and map production."

"Well, well, I will go to your house with the queen to watch the ceremony, but it's not outside the city, it's better to stay inside the city." "Yes, the minister will definitely put a new lift-off test into the city when he arrives, and I hope His Majesty will go to watch the ceremony." Li Er suppressed his curiosity and did not continue to ask, but let Yang Heng go.

"Erlang, why don't you ask in detail?" "Hehe, Guanyin, I don't ask, didn't he say it himself, and I don't know how much ability this kid has, even God can do it, you can't ask, you can't ask, otherwise, doesn't it seem that I'm really incompetent." "Your Majesty, the concubine doesn't like to hear this sentence, there is a specialization in this art industry, you ask this kid to make an article, can he do it, the concubine hasn't heard of what he has done, it's just the poems he chanted, and the concubine also suspects where he copied it from." This eldest grandson is really smart, Yang Heng is a plagiarized poem, that's absolutely right, but they definitely can't think of where they copied it from, and even these designs can be regarded as plagiarism, and no one will know about it.

"Well, yes, that's what it looks like, pouring cement on the bottom, and laying it on the top as it is, I don't want to see it change here, it's ugly." This is at the request of Li Er, Yang Heng went to his home in the city, and renovated it in the yard, Yang Heng estimates that Li Er will definitely want to sit in a hot air balloon, then, you need to completely fix the underneath, otherwise, directly use four, or more big men to pull it, but if Li Er wants to go up, it is better to use the ground pile, that is, the four iron rings to pull the hot air balloon, but it is not possible to simply smash the iron ring into the ground, so naturally you need to pour cement on the ground, try to be very strong, firm, estimated, when the time comes, There will be Li Er's guards to pull the test on this ground pile, but Yang Heng doesn't want to destroy the overall layout of the courtyard, so he can only break the ground, and then pave the ground as it is, that is, the iron ring of the ground pile, and put it as low as possible, and finally, Yang Heng lifted the four floor tiles, installed four iron rings under the floor tiles, and when it was used up, put the floor tiles back, and nothing could be seen. (To be continued......)