After the successful manufacture of rifled breech rifles, Xia Xue continued to study rifled breech artillery, "artillery is the god of war", "truth is only within the range of cannons", Xia Xue knows the importance of artillery, so Xia Xue has also been designing and researching the manufacture of artillery at the same time as the development of angel rifles, because the principles of the two have similarities.

There is no rifled front-loading projectile artillery, although this kind of artillery is simple to manufacture, but the firing speed is slow, the shooting accuracy is low, and the firing range is short, so Xia Xue is resolutely giving up, since it has been a hard work, then try to design a more in line with the requirements and more advanced artillery under the current conditions, although the difficulty is very, very great, but Xia Xue's character has never been a person who surrenders.

Xia Xue still called Xu Mo to study together, and she is now a little inseparable from this ingenious, shy and beautiful young man.

Hearing Xia Xue's call, Xu Mo was extremely excited, he didn't care about resting, and immediately devoted himself to artillery research again, and it was the same waste of sleep and food, and it was the same day and night.

Xia Xue still felt distressed to bring him food on time and accompany him to eat and discuss together.

The principle of rifled breech rifles and rifled breech guns is basically the same, but when they were manufactured, it was found that the gun was heavier and larger, the barrel needed to bear more chamber pressure, the rifling of the barrel was made more slowly, the design of the bolt was more difficult than that of the rifle, and the design of the shell was also the same. The bullets are different and more complex, and special gun mounts need to be designed, etc., which can be described as many dangers!

Xia Xue gritted her silver teeth, and Xu Mo buried her head in the laboratory to start designing, no matter how difficult it is, she has to design it, this is Xia Xue's firm belief, and she is also very confident in her profound knowledge, mechanical manufacturing ability, and genius mind.

After more than six months of hard work, a rifled breech gun was finally developed.

Xia Xue named the artillery: Angel Cannon.

Xia Xue watched that the first mighty artillery was finally successfully developed as she wished, and she was as happy as a child, holding Xu Mo's hand and jumping and jumping, laughing loudly.

Xu Mo pulled Xia Xue's slender hand for the first time, his face was red like blood, his heart was beating wildly, he liked Xia Xue's beautiful and dexterous hands the most, and today he finally held it in his dreams, Xu Mo felt extremely happy and intoxicated, how he hoped to hold the queen's crystal white, mutton fat white jade hand forever, until he was old.

Xia Xue considered that the cannon could be equipped on relatively large sea ships and become a battleship cannon for the navy, which could greatly increase the firepower of the navy. It is also possible to add design sports cars, so that the cannon can be used in the field of the army.

In order to increase mobility, it was only possible to reduce the weight as much as possible, and the final weight of the Angel cannon body (with the bolt) was 333 kg, and it was possible to conduct field battles with relatively maneuverability after using a horse-drawn sports car.

Because the weight should not be too heavy, after repeated balancing, Xia Xue determined the caliber of the Angel cannon to be 75 mm, which was not considered a large-caliber artillery in later generations, but it was enough in this era. Maximum firing range: 6000 meters. The length of the gun: 2175 mm, that is, more than 2 meters, is not very long. Recoil length: 1.3 meters, sports car gun mount style: two-wheeled one-legged type, high and low firing boundary: -8 degrees ~ 16 degrees, directional firing boundary: 3.5 degrees each on the left and right. On land, it can be easily maneuvered with six horses, which is more suitable for field warfare.

The gun latch is designed as a wedge gun bolt with better air tightness, and the gun latch device is an indispensable part of the breech loading gun, which is a mechanical device that locks the gun chamber and can withstand the firing of the gun. Shoot. The backward thrust of the charge gas pressure, the sealing of the powder gas and the accommodation of the firing mechanism are very important.

The cannonball used by the Angel Cannon is a fixed load that combines a projectile and a cartridge, and when loading, the projectile and cartridge are loaded together to increase the reload speed. The structure of the shell includes: hood, projectile (warhead), fuse, cartridge belt, bottom. Fire and cartridges (filled with hair. Shoot. medicine) several parts.

Xia Xue considered that the angel cannon did not need an armor-piercing function for the time being, so the fuse was designed as an instantaneous fuse, which would explode the moment it touched the ground.

The front end of the shell is the hood, which is used to improve the flight characteristics of the shell, resist the impact of wind and rain on the ballistics, improve the impact angle of the shell, and increase reliability; And then there is the fuse.

Then there is the projectile, which is mainly a warhead inside and contains the T.N.T. known as the "King of Dynamite" or the Black known as the "Whirlwind Explosive". Demand. Today explosives.

Behind it is a cartridge made of copper-clad steel, cylindrical, and filled with cannonballs. Shoot. Medicine, the last end of the cartridge is the bottom. Fire. On the periphery of the cartridge indicate the time of manufacture, specifications, etc. of the shell.

Weighing 6.0 kilograms, the shell is an anti-personnel explosive projectile that relies on the fragments and shock waves generated by the projectile explosion to destroy the target. It not only has the effect of blasting, but also has the effect of killing and injuring enemy soldiers, and can also be used to destroy the enemy's city walls, city gates, and field positions on land, as well as destroying the enemy's warships and warships in the sea and rivers.

After Xia Xue has undergone rigorous testing, he is still quite satisfied with the range, rate of fire, power and mobility of the angel cannon, although compared with the advanced cannons of later generations, the firing range of tens of thousands of meters, or even hundreds of thousands of meters, the range of the angel cannon is indeed far behind, but in the era of the Sui and Tang dynasties, the range of six thousand meters is the first in the world, and no one can beat it. In view of the current steel quality, industrial level, production efficiency, and scientific and technological level, Xia Xue is already very satisfied with the successful development of a cannon with a range of 6,000 meters. When the level of science and technology industry in the Angel Kingdom gradually improves in the future, Xia Xue will definitely further improve and improve the Angel Rifle and Angel Cannon.

What makes Xia Xue not very satisfied is that the production efficiency of the cannon is simply too slow, twice as slow as the rifle, and it takes about 6 months to successfully manufacture one.

There are many more parts of the angel cannon than the rifle, Xia Xue still decomposes the cannon into many parts like a rifle, unifies the specifications of each part, carries out assembly line production respectively, and finally assembles it, which can greatly improve work efficiency.