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In seventeenth-century Europe, ballistics based on mechanics and geometry had begun to develop, and many military experts knew that the axial rotation of artillery shells had a long range and stable ballistics.

In fact, the earliest rifled guns have appeared in Europe at present, but because it is too labor-intensive to build by hand, the cost is extremely high, and there is no suitable bullet adaptation, so it has been limited to the research of enthusiasts.

As for rifled guns, although everyone knows that this thing is good, the technical threshold is too high, and there is no trace of it.

Cannons are not as good as rifles, and because of the extremely high bore pressure, as long as the rifling engraved in the two-meter-long barrel is slightly uneven, it is very easy to explode. Before the advent of precision measuring instruments, it was difficult to make a qualified rifled cannon.

In addition, there is the problem of shells, which of this era are spherical. Therefore, even if a rifled cannon can be built, how to get the iron ball into the rifling to create a torsional force when fired is still an insurmountable obstacle for weapons experts.

In order to solve these problems, in the middle of the nineteenth century, the British engineer Wisworth finally came up with a "good solution", that is, a hexagonal rifled gun.

Since rifling is not easy to process, the entire barrel is used as "rifling", and the six sections that are gently twisted play the role of axial torsion of the shell. And making a hexagonal barrel is a hundred times easier than finely crafted rifling.

At the same time, he also invented the matching cannonball. A cylinder with the same six sides, twisted to the same extent as the barrel, can be easily inserted into the chamber from the muzzle. When fired, the six sides of the barrel and the shell meet, creating a torsional force.

This cannon had the advantages of a rifled gun, but it was much less difficult to process than later rifled guns. As soon as it was manufactured, it immediately shocked the whole world - more than five miles of effective range! As long as the gunner aims accurately, he can accurately hit a large gate from three miles away! The front-loading smoothbore gun immediately turned into a grandson in front of it.

Even the Manchu government at that time had spent huge sums of money on such advanced cannons, which shows its influence.

However, along with the excellent performance, the hexagonal rifle gun brought out of the mother's womb - because the inside of the barrel is hexagonal, the wall of the tube at the corner is very thin, and the huge structural stress will be concentrated here. At the level of processing in the mid-nineteenth century, the cannon was often blown up.

In addition, the friction between the twist-shaped shell and the barrel is also very large, as long as the shell is not processed in a little standard, or the surface polishing is not smooth enough, it is easy to get stuck in the barrel and cannot be shot. The result is still a bomb.

Therefore, this kind of cannon quickly became synonymous with "exploding", "jamming" and "scrap iron" in the eyes of gunners.

But judging by the drawings, the design of this cannon is absolutely perfect. All kinds of problems have to wait for them to be created and then they can be exposed after a lot of test firing.

This is also the reason why Zhu Linmiao specially asked Qiao Weili to teach the hexagonal rotor cannon to Tang Ruowang. He was well aware of the level of casting technology in this era, and the hexagonal rifle gun did not seem to be difficult to build, but without stamping and boring equipment, it would be a fool's dream to make a usable finished product.

In the early Manchu Qing Dynasty, more than eighty percent of the cannons were cast by him, which basically reached the same technical level in Europe.

Therefore, if you want to lead the crooked construction of the technology tree in artillery, you must start with this person.

Qiao Weili wanted to brag a few more words about the hexagonal rifle cannon, but Tang Ruo held the drawing with trembling hands, and took the lead in exclaiming: "This is simply an artifact gifted by God!" I dare say that compared to the cannons of the past, they can only be thrown into the garbage heap! ”

"No, that's right!" Qiao Weili found that his lines were snatched by him, and he almost didn't know what to say, "Now those cannons are just rubbish." ”

Tang Ruowang's eyes lit up, "If this kind of cannon can be manufactured in large quantities, I believe that the Qing Kingdom will be able to win the war in a few months." Surely their emperor will not refuse the request of me, oh no, it's you, Marcus, who is the chief contributor, to preach throughout China!

"Oh my God! For the sake of the Holy See, for the sake of His Majesty the Pope! I'm going to muster all my forces to build this cannon, and those old cannons should stop for the time being. By the way, Marcus, you come along, after all, you are one of the designers. ”

In fact, Qiao Weili didn't know why the Ming Auxiliary King wanted to give such an advanced weapon to the enemy, but he knew one thing, that is, he didn't know how to cast cannons at all.

He smiled awkwardly and waved his hand, "Oh, actually, I'm only familiar with design, and foundry is not my forte." He immediately remembered that he had skipped at least sixty percent of the foundry course when he was in school in the kingdom of HRE, and his face couldn't help but blush.

"Oh, that's a shame." Tang Ruowang looked at the drawings again and said confidently, "But the design drawings are very detailed, and I believe that they will be able to be made in a short time!" ”

……

Although the Ming and Qing dynasties stationed nearly 150,000 troops south of the Yangtze River, and a war was about to break out, there was no atmosphere of imminent war in the city of Yangzhou in the north of the Yangtze River.

More than a year after the massacre, the city's prosperity has returned to seven or eight points.

On the shore of Taihu Lake, the street near the prefect's yamen is very lively. In the best part of the street, a newly opened "Su Kee Treasure Shop" looks quite inconspicuous compared to the century-old shops in the surrounding area, but lately it has been crowded with other shops.

A man in official uniform entered Su Jizhen's shop, shook the braid on the back of his head, and said loudly to the entourage beside him: "Clear the field, go to the door." ”

"Yes!"

"Do you hear that? Gone, gone, all out! ”

"Tell me about you, let's be a little bit!"

"Put down the things in your hands, get out!"

The shopkeeper hurriedly ran out and exclaimed, "You, what are you doing here?!" ”

"What are you shouting?!" Immediately, a small official stretched out his hand to stop him, looked at the official behind him, and said proudly: "This is Lord Ma of Yangzhou Mansion." ”

Six-grade master?! The shopkeeper hurriedly knelt down and kowtowed, "The little one has seen Master Ma." He said with a bitter face, "It's just, small rules to do business, you are ......"

Seeing that the customers were all driven away, Ma Tong said, "Get up." You don't have to open this store. Master Su instructed, your goods here are good, and you can send them all directly to the prefect's treasury in the future. ”

"All?" He rubbed his hands together and smiled, "The master said that he laughed, where did you use so many things for appreciation, I have more than 20,000 taels of goods in this store......

"Where is 20,000 taels enough?" Ma Tongju snorted coldly, "Lord Su will give each of the dignitaries in the capital a set, and it will be finished in the blink of an eye." You hurry up and buy again, more than 100,000 taels of goods are not too much. ”

Because I want to communicate better with everyone, I created a book friend group of "The Rise of the Ming Dynasty 1646", with a group number of 683142639. Welcome all book friends to join. In the future, red envelopes will be distributed in the group from time to time, I hope you don't miss it!

In the next newcomer, because of the difficult road of writing, I hope to get the love and support of all book friends. Please do not hesitate to use your monthly passes, recommended tickets, collections, likes, book reviews, chapter reviews and five-star praise, and I am very grateful.

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