'Boom! ’

"Your Majesty, it's exploded again!" After a loud bang, a group of people jumped out of a trench and ran to the explosion point, and Chen Dun shouted at the little emperor.

"Don't shout, I heard it, let you open your mouth, you're afraid of eating soil, and now your ears will be deaf!" Zhao Yu spit out the sand in his mouth and shouted in Chen Dun's ear.

"Your Majesty, don't try, it's too dangerous!" Chen Dun rubbed his ears and kicked a few large exploding iron buckets crooked to the side, still shouting loudly.

"What's going on?" Zhao Yu squatted down and muttered as he looked at the iron bucket that had just been dragged over by the guards. He has been thinking about how to fight all day these days, making his head swollen and annoyed. But I am a 'patient' and I can't go out for a walk casually, thinking that I really regard being an emperor as my main business now, and I haven't entered the studio since the start of the war.

Doing your old job is definitely a good way to decompress, and you will be able to lose your worries after immersing yourself in it. In the Battle of Huling, Zhao Yu found that although the Baizi Gun and the Benlei Cannon were not small, the rate of fire was low, and in order to maintain firepower, they could only be compensated by quantity. In the offensive, both weapons are limited to slow reloading, making it difficult to keep up with the speed of the attacking troops. At that time, he wondered if he could make another weapon to solve this problem, especially in the plains against cavalry warfare.

Zhao Hao's first thought was the 'conscienceless cannon' made by our army in the previous life, this thing has a simple structure, only a gasoline barrel as a barrel of explosives package launcher, fill it with propellant, and then put the explosive package bundled into a disc shape, and then ignite the propellant, you can throw ten kilograms of explosives package to a distance of about 200 meters.

The caliber is absolutely amazing - how thick the barrel is, how big the caliber is, the strong explosive impact produced by the huge explosive pack, has a strong lethality for unprotected group soldiers, and some of the more simple fortifications will also be destroyed, as long as it is within a radius of five meters, it is difficult for any life or fortification to escape. It's just that it shouldn't have enough to hit armored targets, but in this era, there are no tanks, and armor can't stop his huge lethality.

Zhao Yuxiang's lack of conscience cannon is because it is simple to manufacture, lethal, and versatile. Everyone thought that it was created and invented by our army, but in fact it had already appeared as early as World War I. The weapon was originally designed to deliver incendiary grenades, and occasionally to throw cluster grenades as a complement to ground artillery fire.

In the Battle of Arras in France, the Leevens projectile was used on a large scale for the first time in chemical warfare, and the British army threw 2,400 poison gas bombs into the German positions 300 meters away with a single salvo, and these projectiles filled with poison gas exploded and released nearly 20 tons of phosgene, causing heavy casualties to the German army. After that, the Levens projectile rarely fired incendiary bombs, and became a special gas projectile.

Later, in order to solve the problem of insufficient artillery and poor ability to attack fortifications, our army innovated and built a conscience cannon according to its principle. Since then, the technology has been continuously improved in order to maximize the power of the flying thunder. In order to deal with the Kuomintang army's tanks, armored vehicles, field fortifications, and dense formations, they used projectile canisters to modify home-made flamethrowers, used projectile canisters to throw stones weighing several tens of kilograms, and flew cluster grenades......

"Your Majesty, is the material of the iron bucket not suitable?" Chen Dun also squatted down and knocked on the iron bucket with his hands.

"It shouldn't be!" Zhao Yu shook his head and said.

He knew that in his previous life, the unconscionable cannon was made from discarded gasoline drums, and even the Levens projectile cannon was only made of thin-skinned iron drums. Wuhu is one of the earliest iron smelting and manufacturing bases in China, not only rich in iron ore resources, but also in a superior transportation location. As early as the Spring and Autumn Period and the Warring States Period, iron smelting and casting began here. The folk have always circulated the legend that the cadre Mo Ye cast a sword in Chizhu Mountain, and the Wuhu area has used the steel filling method to smelt steel in the Song Dynasty.

This method simply uses the chemical composition of the steel with carbon content between pig iron and wrought iron, eumelts pig iron and wrought iron, and uses the molten pig iron melt melted first to leach on the wrought iron, so that the wrought iron is made of carbon into steel, and the pig iron removes excess carbon and impurities into steel. At this moment, the mature process used in Qiongzhou has been introduced, and Zhao Yu feels that even if it is not as good as the quality of the previous life, it should not be easily exploded.

Looking at the few broken iron barrels around him, Zhao Yu was also a little frightened. After thinking about it a few days ago, he asked the Wuhu Capital Institute to build himself a three-foot-long, one-foot iron bucket with a caliber according to the appearance in his memory, and equipped it with a wooden bracket, and then came to this barren river beach to test the gun. After the iron bucket was set up, a four-pound propellant bag was placed at the bottom, a shelf was put on, and a twenty-pound gunpowder bag bundled into a round cake was placed on the shelf, and after the fuse was installed, the propellant was ignited.

Zhao Yu originally wanted everyone to see his 'new invention', but with a loud bang, he almost destroyed and died. When the propellant was ignited, under the impetus of the explosive gas, the cannon body turned over, and the flame instantly ignited the explosive pack, and the iron barrel was blown up several feet high, and the gun carriage was also torn apart and reduced to firewood. If he hadn't been cautious and dug up the bunker beforehand, they would have been blown away along with them.

The color didn't come out, but it was a disgraced face. Zhao Yu was not discouraged, and continued to conduct experiments, he initially thought that the dosage was not appropriate and the stent was not strong. The next day, the dosage was adjusted, and a sub-iron gun mount was made, but the result remained the same. In a fit of rage, he asked the capital to make seven or eight iron barrels, constantly adjusting the dosage for experiments, of course, the fuse was getting longer and longer, but the result was only the degree of barrel cracking. In the end, he didn't dare to fill the medicine bag, for fear of flying around and blowing up his bones.

"Your Majesty, let's go back first, let the craftsmen make a few more thick iron buckets, and try again tomorrow!" Chen Dun was a little scared, the explosion power of dozens of catties of gunpowder should not be underestimated, it was nothing to blow up a few barrels, if it hurt His Majesty, it would be a hundred deaths, so he persuaded vigorously.

"It's not okay to be thicker!" Zhao Yu touched his chin and shook his head.

"Your Majesty, then go back and think about it, and then try ......" Chen Dun persuaded again without giving up.

"Damn, I've been deceived by them again!" Zhao Yu didn't seem to hear Chen Dun's nagging, and after pondering for a while, he suddenly scolded.

"Whoever dares to deceive Your Majesty, it is a crime of deception, and his subordinates will arrest him immediately!" Chen Dun listened to the words.

"Catch a fart, you don't know them, dig a hole quickly!" Zhao Yu said angrily. He just thought that the strength of the gasoline barrel was very low, and the propellant was much more powerful than the black powder he was using at the moment, but there was no cracking, obviously it was not the strength of the cannon body, but the wrong way of firing, which would lead to failure.

Zhao Yu also happened to remember that he had seen an old photo, but the conscienceless cannon taken in it was buried in the ground. This made him understand that the strength of the projectile is very low, and it is not the projectile that bears the pressure of the chamber when it is fired, but the soil outside the projectile. Be sure to bury the projectile in the soil, and the soil outside and behind the barrel must be tamped. In this way, the huge chamber pressure can be transmitted to the soil layer through the projectile cylinder, and only when the soil layer bears the chamber pressure, the projectile will work, otherwise there will be an accident of exploding the chamber.

Later, with the victory of the war and the continuous updating of weapons and equipment, the unconscionable cannon, which is a complex and dangerous weapon, has been eliminated, and the use of this weapon has been slowly forgotten. Let the directors and directors of those film and television dramas take it for granted that the projectile is placed on the ground, and the scene interpreted in this way is not only a lack of common sense, but also misleads Zhao Yu and these young people, thinking that they are really used like this.

"Your Majesty, the pit is dug up!" The effort is not much, and a three-foot square soil pit has been dug, Chen Dun said.

"Good!" Zhao Yu looked at it and nodded. Then he jumped down from the pit and rearranged it, and put the last iron bucket in at a forty-five degree angle. Then fill the void with earth and compact it. Finally, after leaving a place for the fuse to be installed, add another layer of soil and tamp it until it is three inches from the mouth of the barrel. After the iron drum was fixed, a pound of gunpowder was weighed, wrapped into a medicine bag, placed on the wooden base, and after the lead was connected, a sealed partition and a ten-pound earthen bag were loaded in turn.

"Ignition!" After Zhao Yu and others retreated into the trench, they waved the red flag to ignite the fuse.

'Boom! With an explosion, Zhao Yu saw a stream of fireworks spew out with gunsmoke, and the dirt bag and sealing plate also flew out from the mouth of the barrel, and then slowly flew higher and higher, and after rising to a high point, it fell quickly, smashing on the ground and raising a puff of smoke and dust, and he visually measured about 100 steps.

"It worked!" After the dirt bag landed, Zhao Hao quickly ran to the projectile, only to see that the iron bucket was intact, and couldn't help shouting excitedly.

"This dog has to bury it alive before it can do its job!" After tossing for several days before he had an eyebrow, Chen Dun couldn't help but laugh and scold.

"Your Majesty, the dirt bag has been thrown one hundred and ten steps!" The accompanying guards also finished measuring at this time and ran back to pray.

"Okay, let's just add live ammunition this time and try it!" Zhao Yu looked at the soil bag that he picked up, and several people nodded vigorously, which can be regarded as boiled out. Success or unsuccess is secondary, and this fear is really unbearable.

After cleaning the gun chamber, according to Zhao Yu's requirements, two catties of propellant bags were added this time, and the hemp rope that he had seen picked up just now was burned by the burning gunpowder, so this would be tied with leather strips, and the medicine bag was also increased to fifteen catties. After filling it in the previous order, he estimated the time of the flight of the medicine pack, intercepted the fuse, installed it, and ignited it again.

With a roar, the powder pack flew out, this time higher and farther, and exploded with a delay of a moment after landing. Although they were some distance away, they could still feel a strong wind blowing their faces, and the blown stones and clods of earth fell with a crackle. When the smoke cleared, they walked over, only to see that a three-foot-deep pit had been blown out of the ground, and the artemisia grass and shrubs within a radius of three feet had been swept away by the shock wave.

"Your Majesty, if this falls in the crowd, the people around you are afraid that they will be shocked to death if they are not killed!" Chen Dun has been on the battlefield and has seen what a rocket looks like after it explodes, and this power is obviously greater, and it can definitely be called a big killer.

"Well, it seems to have been a success, but we have to keep testing it in order to find out the pattern. But this thing is okay for holding and besieging cities, but it can't be used for offense! Zhao Yu sighed and said.

After all, this explosive projectile has some similarities with the ancient heavy mortar cannons, which are used at large elevation angles, and although the range is short, the power is amazing. It is a good choice to deal with enemy fortresses, foothills, siege cities, and saturation bombardment of attacking enemy troops. However, there are also disadvantages such as difficulty in movement and long preparation time, making it difficult to keep up with the pace of attack.

However, Zhao Yu soon thought of Mortar's other little brother - mortar. If you count it into a few decades, the original prototype will appear, when the Spanish army laid siege to the Arab-entrenched city of Alihquiras, and the Arabs erected short horn cylinders on the battlements, the mouth of which was raised high towards the outside of the city. A packet of black powder was placed through the mouth of the barrel, and then an iron ball was put in, which ignited the twist and shot at the Spanish soldiers outside the city. This primitive artillery, known as "Modfa", can be said to be the prototype of the modern mortar.

But the world's first real mortar was invented hundreds of years later, during the Russo-Japanese War, when a Russian artillery captain was invented, when Tsarist Russia and Japan fought fiercely for the Port of Arthur in China. The Russian army occupied the fortress of Arthur Pass, and the Japanese army dug trenches and approached the Russian position, and it was difficult for ordinary artillery and machine guns to kill and injure the Japanese army. So he tried to convert an old-fashioned small-caliber naval mortar gun on a gun carriage with wheels and fire a long-tail shell at a large elevation angle, which turned out to be effective in killing and wounding the Japanese troops in the trenches and repelling the Japanese attack.

Since its inception, the mortar has been an effective suppression weapon to support and accompany infantry operations, which is easy to operate, has a curved trajectory, and can shoot close to the target, and there is almost no shooting dead end; Then there is the fact that after the shell is loaded from the muzzle, it is forced to fire by relying on the decline of its own mass, so that the shell is fired. In addition, it has a good killing effect on unprotected targets, and is suitable for shooting at targets behind shelters and targets on the anti-slope plane. In addition, the mortar is a small light artillery, which is flexible and lightweight when used, and is suitable for accompanying infantry in covert activities.

Zhao Yu is very familiar with the structure of mortars, which can be manufactured with the current level of materials and technology. At the same time, the high rate of fire and portability can solve the problem of lack of artillery support for infantry troops during rapid maneuvers. But there are also technical difficulties, one is the trigger fuse of the shell; The second is the need for special shells. If these two items are not solved, it will still be difficult to use them in actual combat, but he knows that difficulties are also the driving force for technological progress......