Li Xiaogong is also resolute in his work, and after two days, the personal soldiers around him led more than a dozen people to Xia Hongsheng's house. It is definitely not possible to build a ship with a dozen or so people, but these are all masters, and they are also characters who don't need to do it themselves when building ships. Their task is to use the rich experience they have learned and experienced in shipbuilding throughout their lives to guide the craftsmen who build ships.

What Xia Hongsheng wants to build is just a small boat to prove that a boat made of steel can also be used on the water, and these dozen or so masters are a bit extravagant.

The drawings Xia Hongsheng has already prepared ready-made, several schemes, but he is not sure which one can be effective. After all, Xia Hongsheng has only seen it, only been to the museum a few times, and does not know how to build a ship, and generally knows the shape, but the specific is not clear. However, Xia Hongsheng is not worried, he only needs to point out one direction and one way, Datang is a smart person, and he can naturally overcome difficulties and achieve his goal.

Naturally, the process was not all smooth sailing, and the steel boat capsized as soon as it was said, and four or five small boats were built, none of which could stay on the water. But fortunately, one is better than the other, from the first ship directly into the water and sinking to the bottom, to the fifth ship trembling and leisurely can sit on people, and the success is getting closer and closer.

By the time of the last two ships, it was no longer Xia Hongsheng's insistence on letting everyone build ships, but the fanaticism of these shipbuilding masters. Through repeated failures, they know that success is near, and they are more enthusiastic about this small ship made of steel. More than a dozen shipbuilding masters ate and lived in Xia Hongsheng's Zhuangzi, and from the morning to dinner, the sound of them constantly discussing how to improve the hull and structure of the ship was on the dinner table. As soon as the bowl is put down. I immediately went to the workshop and put it into practice. The masters went into battle in person, constantly improving from all aspects, not coming out of the workshop all day, sending lunch directly into the workshop, and the same at night, until midnight before going back to rest, sometimes a flash of inspiration, on the whole night of experiments. Even Xia Hongsheng was surprised by the spirit of these masters.

“…… The boat is subjected to two forces while floating in still water. One is the gravity caused by the weight of the ship itself, the items and people it carries, and the direction is vertically downward, and its point of action is called the center of gravity; One is the buoyancy formed by the water pressure outside the ship, which is vertically upward, equal to the weight of the same volume of water discharged by the ship, called the displacement, and its action point is located in the center of the displacement volume, called the buoyancy center. I have already told you about this before, and everyone is a person who has built ships all their lives. I don't know the names, but I've said them before against the ship. I think you know by now, right? Xia Hongsheng squatted on the ground, squatting around a circle of shipbuilding masters, Xia Hongsheng explained while drawing on the ground: "The condition for the balance of the boat on the water is that gravity is equal to buoyancy, and the center of gravity and the center of buoyancy are on the same perpendicular line. If the center of buoyancy and center of gravity of the boat are not on the same perpendicular line, the boat will tilt, changing the shape of the displacement volume and the position of the center of buoyancy until the center of buoyancy is readjusted to the plumb line with the center of gravity to achieve equilibrium. There are four types of floating states of the ship: positive floating, horizontal tilting, trimming and arbitrary tilting. If the longitudinal and transverse coordinates of the ship's center of gravity correspond to the longitudinal and transverse coordinates of the center of buoyancy, the ship is in a state of positive floating, and the bow and stern of the ship and the draft on the starboard and starboard sides are equal, otherwise there will be an arbitrary tilt of pitch, trim or both......"

Xia Hongsheng gave these masters a course on the gravity and buoyancy of the ship, which had been demonstrated against the ship before, so that they knew the gravity and buoyancy, and the displacement ...... What are the nouns of the like. Because the fifth ship will not sink to the bottom, but the stability is not very good, Xia Hongsheng took on the role of the leader again, led them to the door, and then let them study on their own and find a way to solve the problem.

A group of masters listened very seriously, they were people who had an extremely good understanding of ships, and they came into contact with a new world about ships, and these masters were like a second spring, and their desire to learn was very strong.

The music platform that lives above Xia Hongsheng Zhuangzi also came to join in the fun, put forward some good suggestions, and helped together.

A morning passed in a hurry in the discussion between Xia Hongsheng and a group of masters, and at noon, these masters did not plan to leave the workshop, and wanted to step up the application of the results of the discussion to new experiments.

Although the morning and night are already a little cool, the autumn tiger during the day is still unbearably hot.

At noon, I saw Yuexian and a few maids in the house carrying bamboo baskets to find the workshop and sent lunch to everyone.

The big meat sandwich bun, the masters can nibble on one person, and then one person pours a large tea jar full of cold brew tea with ice cubes, burps and then sipes a sip of cold brew tea, which tastes very refreshing.

"Childe, go back and take a rest, the autumn tiger is powerful at noon!" Yuexian saw Xia Hongsheng grab the cold brew tea and pour it on his head, so he took out a silk scarf to wipe the sweat off Xia Hongsheng's forehead, and said with some distress in his words.

"No need, I did it earlier, but I did it earlier." Xia Hongsheng wiped his forehead with a smile and said, "You go back and rest!" On such a hot day, just let a few family members send it, and you can run again. ”

Yuexian didn't speak, just pursed her lips and smiled, and packed up her things for Xia Hongsheng.

"What are you doing when you're packing?" Xia Hongsheng saw that Yuexian had packed up his things, so he asked.

Yuexian smiled faintly: "Childe has been busy with things here for a while, and he has forgotten about the big things!" The military academy is about to take the midterm exams and recruit new students, and the son will not come over to take a look. This morning, Ma Zhouyuan has already come to look for his son! ”

Xia Hongsheng was stunned for a moment, and suddenly slapped his head: "Look at my memory!" It's a new semester again! ”

Immediately, Xia Hongsheng was stunned again, and suddenly thought that the military academy was about to reach the new semester, and now it was already the end of August, and September was the day when another batch of new cadets from the military academy arrived. That is to say, the time when the Tang Dynasty and the Turks started a war in history will soon be approaching.

Today's Datang is much stronger than the Turks in any aspect, and if you start a war with the Turks, you don't have to worry that Datang will lose this battlefield. It is precisely because he has known the outcome of this war for a long time that Xia Hongsheng is not too concerned about this war that must be won.

However, you still have to be cautious in doing things, you have to go to the military aircraft workshop to take a look and think about it.

"Master Hou, do you think we have to change to a bigger oar?" A master came out of the workshop behind him and said, "This iron boat is made to sink, and ordinary small oars are afraid that it will be difficult to row away." ”

Xia Hongsheng heard the words of the old master and was about to nod, but suddenly his heart was shocked, and he realized a serious problem. (To be continued.) )