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The admiring gazes cast by everyone fell on the cannon touched by Zhao Guanjia's hands.

The great eunuch Liang Shi, who was good at flattering, was full of praise for the artillery designed by the Zhao Guan family...

Prince Zhao Huan, King Yun Zhao Kai and King Kang Zhao Gou all expressed their admiration...

Zhao Ji touched the cannon and naturally knew that this cannon was not the original creation of him as a time traveler, but a design drawing he drew based on what he knew about the Ming Dynasty Hongyi cannon and submitted it to a firearms manufacturing workshop for development.

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Hongyi Cannon, also known as Hongyi Cannon.

Its prototype is a long-barrel artillery invented in Europe in the 16th century; it was introduced to China in the late Ming Dynasty and was quickly copied.

A long-barreled, spindle-shaped front-loading cannon that was invented in Europe in the mid-to-late 16th century and commonly used on battleships. It was introduced to China in the late Ming Dynasty and was called the Hongyi cannon by the Chinese.

The so-called "red barbarians" refer to the red-haired Dutch and Portuguese.

Officials of the Ming Dynasty often covered these cannons with red cloth, so they called them "red cannons". There is also a theory that the Qing Dynasty avoided the word "barbarians", so they renamed these cannons "red cannons".

At this time, Zhao Ji put his hand on the ear of the Hongyi cannon and looked at it carefully.

Firearms manufacturer Chen Gui saw that Zhao Guan's family couldn't put it down, so he bowed and clasped his fists, smiled and said truthfully:

"This artillery was manufactured by the craftsmen of the firearms manufacturing workshop led by Wei Chen based on the design drawings drawn by His Majesty.

When Wei Chen first received the artillery design drawings given by His Majesty, he still didn't understand why such cylindrical lugs were cast on both sides of the center of gravity of the cannon body?

However, after the previous gunner's test firing experiment, I suddenly realized that His Majesty's thoughts and concerns are far beyond those of ordinary people like us.

This artillery has lugs on both sides. Before firing the artillery, you can use the lugs as a shaft to adjust the shooting angle, and then according to the amount of gunpowder loaded into the artillery, you can change the range!"

Zhao Ji smiled and nodded, pointed at the front sight and rear sight of the artillery, and asked:

"The front sight and rear sight I designed for this artillery gun, how do you think the effect will be during the firing experiment?"

Chen Gui immediately said excitedly: "Your Majesty, with the sight and rear sight of this artillery gun, the gunner can calculate the ballistic trajectory according to the parabolic principle taught in His Majesty's secret decree. The accuracy is greatly improved!"

Zhao Ji nodded with satisfaction and asked again: "The artillery I designed has a long barrel, thick wall, thicker tail, and a tail bead with a large caliber. The overall shape is from the muzzle to the tail.

Gradually thickened.

Does Chen Aiqing know why I designed it like this?"

Chen Gui had thought about this problem more than once when he received the design drawings from Zhao Guan's family a few months ago, but he was unable to come up with the correct answer.

Chen Gui shook his head in shame and said, "I am a humble minister. I know the profound meaning of your majesty's design."

"Hahaha..." Zhao Ji laughed and said, "Chen Aiqing is being too modest. Let me tell you, this type of artillery is designed with a long barrel, thick wall, and large caliber. The overall shape gradually becomes thicker from the muzzle to the tail.

It is most in line with the principle that when gunpowder is burning in the barrel, the chamber pressure changes from high to low."

I hear the stereotypes but I seem to understand them.

Zhao Ji saw that Chen Gui was still confused, so he simply explained it to him and said leisurely:

"I designed it this way so that when the gunpowder burns in the gun barrel, the chamber pressure will increase quickly, so that the projectiles in the gun barrel can be launched powerfully.

In this way, it can not only prevent the chamber from exploding, but also make the projectile launch farther!

After the projectiles are fired, there is no need to have an excessively high chamber pressure in the gun bore. The chamber pressure must be quickly reduced so that the gunpowder and projectiles for the next shot can be filled quickly."

After hearing this, Chen Gui suddenly realized: "Your Majesty is wise, and only after your Majesty's instructions do I understand the truth!"

The prince Zhao Huan who was next to Zhao Ji, the king of Yun, Zhao Huan, and the king of Kang, Zhao Gou, could not understand the conversation between his father and Chen Gui at all.

However, they all felt that their father was really great at designing gunpowder weapons!

With the approval of Zhao Ji, the firearms manufacturer Chen Gui gave the order, and the artillery truck was pulled forward fifty steps away from here, and fired at a thick stone wall that had been built on the hillside for more than 400 steps.

Under the expectant eyes of everyone, the four artillery queens were ordered to drive two oxen and pull the artillery cart forward slowly.

"Creak, creak..." The wheels and axles made of steel on the gun carriage make a beautiful and sweet sound when they rotate.

Zhao Ji looked at the gun carriage moving forward and couldn't help but feel excited.

Although this kind of red barbarian cannon had long been eliminated in the military wars of modern society before he traveled through time,

However, in AD 1121, the third year of Xuanhe in the Northern Song Dynasty, this artillery was six hundred years ahead of the world!

In fact, Zhao Ji, a time traveler who is a master of history, knows that when this kind of red barbarian cannon was first introduced to China from Europe in the middle and late Ming Dynasty, foreigners mainly used copper to make this kind of cannon.

Copper is used as raw material to make this cannon.

Although, it is not easy to explode, nor is it easy to have pores, and it even has a longer lifespan;

However, its cost is too high and its weight is too heavy, which are fatal shortcomings.

The smart craftsmen of the Ming Dynasty thought of using steel to make this cannon to replace the copper cannon. After many experiments, they really succeeded!

In turn, in the middle and late Ming Dynasty, China also exported its technology of steel casting artillery to European countries such as Portugal and Spain...

In addition, when the Ming Dynasty manufactured the Hongyi cannon, they also creatively invented the design of the iron-core copper body. In this way, this copper-iron composite metal cannon casting technology can not only reduce costs, but also ensure a very high level of technology.

index.

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At this time, two big oxen pulled the artillery cart and arrived at the designated firing location.

Several soldiers and assistants who had been waiting at the launch site quickly unloaded the truck and took the two oxen aside.

In advance, the artillery had been loaded with about twenty kilograms of ammunition and a large projectile.

The projectile was a spherical solid projectile made of iron.

Of course, in addition to firing solid iron bullets, the Hongyi cannon can also fire a variety of solid bullets such as stone or lead.

At present, the cannon designed by Zhao Ji is the last Hongyi cannon to be fully improved in history. It can not only fire solid bullets, it can also fire explosive bombs and explosive bombs.

However, the newly established firearms manufacturing workshop in the Song Dynasty, which was less than half a year old, has not yet developed explosive bombs and explosive bombs. This time, the Zhao Guan family will be shown how to fire such artillery, and they can only fire solid bullets.

At this point, Zhao Ji can also understand the difficulty of the firearms manufacturing workshop.

At this time, at the launch site, a main gunner with more experience in experiments leaned over and stood behind the rear of the gun, with his chin pressed against the upper barrel of the gun's rear.

His eyes passed through the rear sight and front sight of the artillery, aiming at the target of the bombardment...

While watching, he shouted the angle that needed to be adjusted to adjust the muzzle...

The two gunners on the left and right sides of the gun each held the cylindrical lugs on both sides of the gun body at the center of gravity, and quickly and continuously adjusted the shooting angle...

"good!"

The main gunner shouted, and the two gunners responsible for adjusting the firing angle immediately fixed the gun body and stopped adjusting the firing angle.

At this time, everyone in the rear saw the main gun raising a small red flag.

Zhao Ji knew that this was what he had previously asked Chen Gui, the firearms manufacturer, to let his subordinates be responsible for test-firing the gunners.

Because, if on the battlefield, whether it is the shouting of the enemy or our own hands, and when many artillery fires are needed, the sound must be very loud and noisy. The main gunner's shout alone may not be heard clearly by his companions who are adjusting the shooting angle and ignition.

.Therefore, it is necessary to cooperate with the semaphore.

At this time, everyone standing around Zhao Ji, except Zhao Ji himself,

In addition to the firearms manufacturing envoy Chen Gui and deputy envoy Li Ji, Zhao Guanjia had already informed them of the importance of semaphores when firing cannons;

Everyone else is now very curious about what the main gunner responsible for aiming raised the small red flag means.

In fact, Zhao Ji also thought that if I, the Emperor of the Song Dynasty, fired the cannons in front of everyone, not only would I be a big deal in front of everyone, but I would also be recorded in the annals of history.

However, Zhao Ji, who has traveled through time, also knows that the newly developed Hongyi cannon is not at its best in terms of technology, and there is a risk of exploding the barrel.

Although this risk is less than one ten thousandth, how can I take such a risk?

At this time, the main gunner, who was fifty or sixty steps away from Zhao Guan's house, suddenly lowered the small red flag he held high in his hand. He shouted loudly and said:

"ignition!"

Every gunner responsible for igniting the fire has already been prepared.

He held the torch in his left hand, and the long iron drill with a wooden handle held in his right hand placed it on the flame of the torch and burned it for a while.

The iron drill was from thin to group-shaped, and its front end was burned red by the torch.

When the gunner in charge of igniting saw the main gunner's semaphore and the order to light the gun, he immediately inserted the red-hot iron into the fire door at the rear of the Hongyi cannon.

Because a large amount of gunpowder was loaded into the barrel of this Hongyi cannon, and then powerful iron ball shells were stuffed;

The gunner in charge of ignition inserted the red-hot iron drill into the round hole of the fire door to seal the cannon's fire door, and the front end of the red-hot iron drill quickly ignited the gunpowder in the barrel, and instantly

The resulting powerful explosion pushed the large solid iron ball shell out of the barrel.

There was a "boom" sound.

The people watching from behind saw that as flames and thick smoke came out of the muzzle of the artillery in front, a large iron ball burned red by the high temperature of the explosion in the barrel was shot into the sky at an extremely fast speed.

.

The big iron ball drew a perfect parabola in mid-air and hit the target 'city wall' more than 400 steps ahead.

With a "bang" sound, more than half of the thick and huge stone 'city wall' was destroyed by the cannonballs.
To be continued...