Boom, the cannon let out a roar, and half a foot of fire erupted.

A gravel meteor flew out, and a small tree fifty paces away was instantly cut off by half of its crown.

Immediately after the first shot, one of the artillerymen stepped forward and forcefully removed the sleeve inside and replaced it with another identical inner barrel.

Preparation!

Zhao Dazhui raised the flag again.

Put!

As soon as the artillery pulled the rope, the artillery roared again.

This......

The generals couldn't help but be taken aback, and a shocked look appeared on their faces.

They had seen the power of the crockpot bomb.

To be honest, it looks amazing, but the lethality is still a little lacking.

In the next few wars, not many people were killed by bombing, and there were not as many people as the enemy trampled on each other in a panic?

Far less powerful than incendiary bombs.

But this cannon that can spit fire completely stunned them.

Judging by the attack on that small tree, it was able to sweep almost everything within fifty paces.

Is this still a cannon?

Zhao Dazhui saw that the cannon stopped everyone, and couldn't help but say proudly: "What's the matter, the divine soldiers I brought down from the Immortal Mountain are powerful." ”

Everyone was indeed stunned, but not because of Zhao Dazhu, but because of the cylinder in front of them.

This thing can cut off half of the crown of a tree at once, and if it hits a person, wouldn't it shatter in an instant?

Everyone came to the cannon body in surprise, and Gao Shun couldn't help but reach out and stroke it for a while.

The cannon had just finished firing, and the barrel was still steaming.

"This thing is really powerful, if the enemy charges forward, put a few rows in front of the formation. It's simply invincible, where is the need to go into battle? ”

Gao Shun, who was the commander of the army, immediately recognized the value of artillery.

Gee!

Zhang Fei also circled around the new artillery a few times.

He suddenly moved, and immediately set up his horse, and one, two, three stepped forward to pick up this thing.

Hey!

Zhang Fei roared, his face turned from white to red, from red to black, but he could only lift half a wheel.

Boy!

He let go of his hand abruptly, panting and saying, "It's so heavy!" ”

Zhao Yun was extremely surprised in his heart.

He is very clear about Zhang Fei's strength. Zhang Fei has been practicing martial arts since he was a child, and he is stout enough to lift hundreds of catties of grinding discs, but he can't lift this small artillery.

"Third brother, let's try it together!"

Zhao Yun was also a little eager to try.

The two of them each picked up the head and tail of the cannon.

One hundred and twenty-three, up!

Combined, the two of them barely managed to lift the cannon.

But it's just lifted, and it's a little powerless to raise it again.

It's amazing!

At the same time, the two of them panted and dropped the gun carriage, wiped the sweat beads on their heads, and sighed heartily.

"Immortal weapons are naturally not something that you mortals can bear."

Zhao Dazhui said triumphantly.

"Shut up! No more nonsense, Lao Tzu dismantled your cowhide. ”

Zhang Fei is not happy at this time.

Seeing that Zhang Fei was angry, Zhao Dazhui closed his mouth.

Lord!

Gao Shun said respectfully: "What kind of weapon is this, and what is its name?" So powerful? If you can arm the infantry, you will be invincible. ”

It's called artillery!

Guo Jia had a smile on his face.

Artillery!

Everyone couldn't help but nod.

This thing can burst into flames, and it is natural to call it artillery.

Although the projectile crockpot bomb is ahead of the group, its shortcomings are also obvious, such as insufficient power, cannot be used on rainy days, and is not very lethal.

To solve these problems, he came up with the idea of making artillery.

After getting married, Guo Jia began to prepare for this matter. And let Zhao Dazhui take full responsibility for this matter.

But it was not an easy task to make artillery, first of all, it was necessary to use good steel to make artillery, but steel was a luxury for the technology of this era, and was usually used to make weapons and armor.

Although it can also be used to make cannons, it is too clumsy and unstable, and it is easier to blow up.

After much thought, Guo Jia decided to cast a cannon in bronze.

Although bronze is expensive, it is malleable, malleable, and more importantly, much lighter than cast iron, and easy to source. As the border trade center of Yunzhou, copper and tin are still easy to buy.

The caliber of the cannon directly determines the power, but at the same time it increases the load. Although the large-caliber bronze cannon was also powerful, the weight became a problem, and the giant large-caliber cannon could only be placed in a fixed place such as the fortress at the head of the city.

But if you want to defend the city, it is enough to have a crockpot bomb and a giant catapult. There is no point in adding artillery.

What Guo Jia urgently needs is a lightweight and relatively lethal artillery that can be flexibly transported.

Another conundrum arises.

It was necessary to expand the caliber of the artillery and reduce its weight, which was still very difficult in the late Han Dynasty, when there was no cannon steel cast iron technology.

But this also can't help Guo Jia, the bronze cannon body can be a little thinner, and auxiliaries can be added to fix the cannon body.

Guo Jia remembered the earthen cannon used by the Eighth Route Army during the Anti-Japanese War, which was an earthen cannon with pig iron as the inner diameter, wrapped with trees on the outside, and fixed with straw rope or iron sheet.

This cannon does not have any shooting accuracy, but it is lighter and more solid than a pig iron cannon.

In addition, the reason why the earth cannon is inefficient is because it is inconvenient to reload.

In view of this, Guo Jia deliberately manufactured a cannon with a separation of the propellant and the barrel, and equipped it with a stone firing device, which eliminated the step of ignition of an open flame.

In other words, the barrel is the barrel of the cannon, and the core of the cannon is the core of the cannon, and the core of the cannon is made of a thin bronze barrel, which can be filled with gunpowder gravel and shells.

When firing, you only need to put the core into the barrel to fix it, and the core of the gun barrel is tightly fitted, so as to avoid the risk of being blown up, and then ignite it with a stone. After a shot, the gun core and the gun barrel will stick together, at this time, you only need to pour water on the gun barrel to cool down, you can easily take out the empty gun core, and then replace it with another gun core.

In this way, reloading becomes much easier, as long as there is a spare gun core, it can continue to fire and form continuous firepower.

The core is easily deformed and broken, and it is a consumable item, but as long as the remaining core is recycled and recast, it can be reused.

Through repeated research, this kind of wood-veneered bronze cannon with a separate official core was finally available.

There were also many mistakes during this period, and some craftsmen and artillerymen also lost their lives.

After three years, the technology of this artillery was finally perfected, and it was soon put into production.

Guo Jia named this cannon Yunzhou artillery. The original projectile gun carriage was renamed the Thunderbolt.

Zhao Dazhui brought the first batch of ten Yunzhou artillery, which weighed more than 1,000 catties and was transported by horse-drawn carriage. The core of the cannon was filled with granular black powder, and the shells were mainly used for gravel close-range killing. In addition, each cannon is equipped with a dozen bronze cannon cores, which can provide at least ten cannons of sustained fire.

(End of chapter)