The development of human beings to the height of modern times is a long-term and slow accumulation, which is taken for granted in the eyes of later generations, and it is a very simple thing, but I do not think that this is an accumulation of years and cognition that I don't know how many years and cognition will be formed.

From the invention of artillery to the emergence of sub-cannons, there was a gap of 200 years, which required several generations of continuous efforts and exploration, a process of hard work and painstaking efforts for the ancients. But for Rakuten, it's just a casual idea, or even just a process of brainstorming, which is the difference between knowledge and cognition.

"Sub-mother cannon?"

Hearing what Lotte said, a group of craftsmen led by Wang Lao'er couldn't help but look at each other, and even more surprised to call out their mouths.

The manufacture of artillery is suspected of being prohibited, it is a confidential secret, but the steam engine does not need to be kept so strictly secret, the bear steward who makes the steam engine does not know the artillery, but a group of craftsmen led by the old man Wang know the steam engine. In the eyes of the craftsmen, this Hou Ye Le has too many ideas, these people's brains can't keep up with the rhythm of optimism at all, a cannon has not been completely manufactured, how can this Hou Ye come up with a child and mother cannon.

In front of Wang Lao'er, Shi Li asked: "May I ask Master Hou, what is this mother cannon?" ”

Eyes swept over everyone, and under the good eyes of a group of craftsmen, Lotte said: "My Great Song Dynasty has been short of copper since ancient times, and even the imperial court and the market are short of copper coins, and copper cannons are too expensive to be manufactured in large quantities. In order to prevent the iron cannon from exploding, the thickness of the barrel and the barrel of the cannon is increased, but the cannon made in this way is too bulky and inconvenient to move, and even the simple thickening of the barrel cannot completely eliminate the danger of exploding.

Therefore, after meditating on Kuji, Ben Hou thought of another solution, which was to first cast a cannon with a wide belly and open from the breech, and then make a keg with iron equivalent to the size of the bore according to the size of the bore, put the gunpowder and projectiles in the keg, and then put the keg full of gunpowder and projectiles in the cannon with a wide belly, and then fire! ”

Although these craftsmen do not have a wonderful idea, they know that it is easier said than done, and the feasibility is the most important thing.

Looking at the contemplative expressions of the crowd, Lotte continued to explain the truth to everyone in detail: "The keg filled with gunpowder and projectiles is placed in the belly of the wide artillery, which is equivalent to the artillery has two layers of inner walls, even if the inner barrel is exploded, it will only hurt the inner barrel, and it will not hurt the outer barrel, the keg is not broken, and it will be replaced with a new one, as for the outside cannon, it can still be used." ”

Listening to Lotte's explanation, a group of craftsmen suddenly opened their mouths and said wonderfully, This method really solves the problem of poor iron quality in the Great Song Dynasty.

To put it in detail, the sub-mother cannon has a bit of the principle and prototype of the cannon of later generations, but before the invention of the collision fuse, it can only be detonated by the ancient method of igniting the fire.

After the voice fell, Lotte smiled: "You have already tested the artillery, presumably you have experienced everything, every time a round of artillery is fired, it is very inconvenient to clean up the gunpowder residue in the barrel and the inner chamber, and in this keg of gunpowder, it is very easy to clean up after firing, and if you put more than one of these kegs with gunpowder at the same time, you only need to do a little division of labor, some people fire shells and some people fill gunpowder, which greatly improves the speed of artillery firing." ”

A group of people have been studying artillery for nearly two years, and after pondering for a long time, they have a clear understanding of the performance of this black powder artillery. I didn't expect that this time Le Hou Ye would put forward such a wonderful idea, and there are so many benefits, it is really breathtaking.

The iron control technology of the Song Dynasty was too backward, the iron quality was too poor, and the artillery gunpowder produced would cause the chamber pressure to be too high.

In the contradiction, Lotte has no way, painstakingly recalling the later generations, according to the artillery principle of later generations, to come up with such a method, but after a little thought, this is the working principle of the later generations of sub-mother cannons.

After thinking about it for a long time, after roughly understanding the principle of the sub-mother cannon, Wang Lao'er said: "Since Hou Ye has an idea, please Hou Ye draw a drawing, and leave it for us to understand, I think I will definitely be able to do something in the future!" ”

Lotte nodded, took the pen and paper and thought about it for a while, and simply drew two drawings of the cannon, one is to put the keg containing the gunpowder projectile from the opening of the barrel of the gun, and the other is the same as the artillery of later generations, designed as a barrel with two openings at the end, and the keg with the gunpowder projectile is filled from the opening behind the barrel.

The reason why the two options will be chosen, Lotte is also after consideration, the chamber pressure is the most powerful factor in determining the artillery, in turn is also the biggest factor that threatens the safety of gunpowder and cannon water, Lotte does not know the two ways of loading artillery, which one is the safest and most suitable to use, Lotte has no number in his heart.

The drawings of the sub-mother cannon are not as easy to draw as imagined, mainly involving the design of the rear gun gun and breech, and the gun and breech do not meet the requirements, which is the biggest threat to the gunner. However, thanks to the research of Wang Lao'er and others over the past year or so, how much gunpowder is in the barrel and how much projectile is loaded, a complete set of data and experience have been accumulated.

"Master Hou, Xiao Lao'er and others have recently discovered a strange phenomenon, and it can even be said to be a blessing in disguise!" After Lotte finished drawing the two drawings, Wang Lao'er said.

"A blessing in disguise?" Lotte is good.

"This is going to talk about the first spring rain this year!" Wang Lao'er said: "A primary apprentice who made gunpowder in the workshop did not have time to check because of his sleepiness at night, and the rain fell on the tank containing the gunpowder, making the gunpowder completely dilute mud. ”

Although he is a person who travels through it, Lotte only knows the most primitive composition of black powder, one nitrate, two carbon and three sulfur, and no matter how many things he does, he doesn't understand it. In fact, as far as black powder is concerned, granular powdered black powder has the advantages of faster combustion and greater explosive power, and the nature of granular black powder is stable, and it will not be stored for a longer time like powder black powder, so that the power is reduced.

Of course, at this time in the Northern Song Dynasty, there was no gunpowder polishing technology, and if these black powders could be polished, they could still have a certain degree of waterproofness.

Fortunately, it is a person who travels through it, and after a little thought, Lotte understands why powdered black powder is so powerful, because the air between the gaps increases flammability, so that the gunpowder can be fully burned and release greater kinetic energy.

Nodding, Lotte said again: "I saw the power of the copper cannon in Hangzhou, although I didn't have the firearms of the cannon in the Great Song Dynasty, but I was still not very satisfied with the power of the artillery!" ”

Obedient to the voice, Wang Lao'er and a group of craftsmen couldn't help but look at each other, and their hearts were speechless, in the eyes of these people, the power shown by these cannons can be said to be unprecedented, but this Le Hou Ye is still not satisfied......

Soon, Wang Lao'er realized something, and said with a smile: "Master Hou, didn't you think of any means to improve artillery?" ”

"Jiang is old and spicy, I can't hide anything from your Master Wang!" Lotte laughed.

When the craftsmen heard this, they got better together.

Wang Lao'er hurriedly said: "What kind of means, Hou Ye said to listen to the little old men!" ”

"Blossom Bomb!" Lotte said.

Wang Lao'er and the craftsmen were puzzled by what this flowering bomb was.

"It's easy!" Lotte smiled and explained to the workers: "To be precise, it is to make an iron shell, put gunpowder in it and add a fuse, and use it to replace the previous solid projectile launch." ”

After a pause, Lotte continued: "The specific operation process is to put the bottom to help the gunpowder, first ignite the fuse of the bottom to help the gunpowder, and then the fuse of the flower bullet, and throw the flower bomb into the dense formation of the enemy!" ”

Hearing this, a group of craftsmen immediately understood, and their hearts were even more surprised, the power of the solid bullet has been seen by these people, this flowering bullet or successfully manufactured, the power is even more terrifying. But imagine that it is also very troublesome to calculate the thickness of the iron shell for making flowering shells, because the gunpowder cannot be exploded if it is thick, and it has no power if it is thin, but one thing is certain, as long as the cast iron shell is exploded, the lethality is really not covered.

What followed was a group of craftsmen discussing how to make the iron shell of the flowering bullet, and it was not difficult to make the iron fan, only discussing the size and description, and finally it was the board that Lotte patted and made the Kaihua bullet into a round.

Although Lotte knows that the streamlined shape of the bullet has the least resistance in the air, there is no fuze technology in this era, and the only way to detonate the flowering warhead is to use the fire as a fuse, which is also unavoidable.

After the clapping, Lotte added: "By the way, when making the flowering bullet template, don't forget to leave a pattern on the surface!" ”

"Why?" Wang Lao'er and the craftsmen were puzzled.

"Convenient and easy to explode and bloom!" Lotte replied.

Lotte couldn't help but sigh that in the era of the Northern Song Dynasty, subject to backward science and technology, people's knowledge was too shallow, and they had good ideas, limited to the limitations of basic science, and they didn't know how long it would take to realize them.

"Official, it's getting late, it's time to go home." Shakuchi, who was waiting next to him, reminded, "The courtyard is too far away from Biandu, and the road is not very good, so it is difficult for vehicles to walk at night, so we have to think about your safety." ”

He only cared about discussing the artillery with Wang Lao'er and the others, until Shakuchi reminded Le to notice that half of the sun had already fallen down the mountain at this time.

I offended Tong Guan, Liang Shicheng and others, although I have no official position now, but these people have low morale, it is really hard to say whether they will do black hands behind their backs.

I didn't want to stay here much, and Lotte said to himself: "If this era is different from the next generation, there will be no street lights!" ”

Thinking of the street lamp, Lotte suddenly had a flash of inspiration, and instructed Wang Lao'er: "Master Wang, please let Le make a hundred zhang of copper wire, which should be as thin as a hair." ”

Immediately, Lotte remembered the agreement with Xu Ruzhuo today, and instructed Tu Si: "You go and tell the bear steward that you will drive the steam ship to the Bianhe River in the outer city of Biandu before tomorrow, and wait for me by the Bianqiao." ”

After speaking, Lotte said to Shakutan: "When I get home today, if it's still early, send me a post to invite Master Li Gang, Lord Chen Lingyuan, and Lord Yu to go to the Bianhe Bridge tomorrow."

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