doomsday survival

Chapter 331 Another Sharp Weapon
During this period of time, apart from teaching shooting, Feng Kuang spent most of his time doing research in the laboratory of the chemical factory.

Shi Jian also devoted all his attention to training, and took care of Xia Qing in his spare time, and he didn't ask Feng Kuang what he was going to come up with.

Now that Feng Kuang asked him to see the results, Shi Jian of course happily agreed, and came to the laboratory of the chemical plant with Feng Kuang.

This laboratory has already been sorted out, and the experiments are full of bottles and cans, but it does not appear to be messy at all, but gives people a sense of order.

"Old Feng, don't tell me, you can see from this table that you really study chemistry, and you are 100% not a liar," Shi Jian said jokingly.

Feng Kuang laughed and said: "That's up to you, if you make a mess, if you get more confused and take the wrong reagent, it will kill you."

Shi Jian wouldn't touch those things, who knew if there were any dangerous items in them, so he sat far away and asked, "What are you doing these days? Do not say."

Feng Kuang took out a glass bottle from the cabinet, which contained some black flakes, and said, "Look at what this is? Do you know it?"

Shi Jian stood up and took it, held it in his hand and looked around for a long time, and said very sincerely: "I don't know you?"

"Gunpowder." Feng Kuang said with a smile.

"It's different from what you made before, new product?" Shi Jian asked.

"Of course it's different. This is gunpowder fired without smoke." Feng Kuang said with a smile.

When Shi Jian heard that smokeless gunpowder was fired, his eyes widened immediately, and the hand holding the bottle trembled a little. He asked, "Is it really smokeless gunpowder?"

"Come on, let's do the experiment." Feng Kuang said and walked outside, Shi Jian hurriedly followed behind.

When the two came outside, Feng Kuang took out a piece of gunpowder, put it on the ground, then put a fuse on it, ignited it, and left quickly.

When the fuse ignited on the gunpowder tablet, the gunpowder was ignited immediately, emitting a burst of dazzling light.

Although the light produced by the gunpowder was very dazzling, Shi Jian still stared at it without blinking. When he saw that there was no smoke at all, he walked closer and found that there was no residue on the place where the gunpowder was placed, and he burst out laughing.

"Old Feng, that's great!" Shi Jian clapped his hands and said.

No wonder Shi Jian is happy. Smokeless gunpowder has no residue after burning, and produces no or only a small amount of smoke. The use of smokeless gunpowder can increase the range of projectiles, improve ballistic straightness and shooting accuracy, and is widely used in the military industry.

"Do you know what weapon I intend to use this smokeless gunpowder for?" Feng Kuang asked with a smile.

Shi Jian lowered his head and thought for a while. Judging from the current situation, landmines and grenades do not need to be used, and although smokeless propellants can be used for bullets, the three countries in the 21st century cannot produce rifle bullets, let alone Chang'an in the last days. Tribe, then the answer is obvious.

"Cannonballs? Are you going to make cannons?" Shi Jian asked tentatively.

Feng Kuang nodded with a smile and said, "A child can be taught!"

"There is propellant, but making guns is definitely a university question. We can't produce steel. Where do gun barrels come from? Besides, you can't let Feng Chen and the others pull a cannon to explore?" Shi Jian shook his head and said.

Feng Kuang looked at Shi Jian with disdain, and said, "Well, I just praised you in vain, I thought you knew all the information you stored in your phone, but you didn't even know it after a long time."

Shi Jian lowered his head and thought for a moment when he heard the words, and suddenly realized: "Oh, it turned out to be a mortar, this is totally fine!"

When researching historical time travel novels, Shi Jian believed that according to the production level of ancient times, the only weapon that can be copied from the modern era is the mortar.

The mortar is a front-loading smoothbore gun, and the barrel itself does not need to withstand too much chamber pressure, so the requirements for the steel of the barrel are not high.At the same time, the mortar is easy to operate, light in weight and easy to carry, and its unique curved trajectory can be close or far away, and it can also attack targets behind obstacles. It is really a must-have weapon for travelers.

I have to say that the structure of the mortar is really too simple. You can easily find the structure diagram of the mortar by searching the Internet. Shi Jian's mobile phone has the structure of the 60mm mortar of the Tianchao Type [-] picture.

If you find the right steel, you can use machine tools to manufacture the gun body, and the shells can be cast directly using cast iron.

The smokeless gunpowder that originally restricted the production of mortars was manufactured by Fengkuang, so it can be said that mortars can be completely self-produced, which will add a major war weapon to the Chang'an tribe.

"Is this propellant easy to produce?" Shi Jian asked eagerly.

Feng Kuang nodded, and said: "It's not bad, the main ingredients are nitrocellulose, nitroglycerin, and neutralizing agent and vaseline, which reduces the ignition rate. The only troublesome thing is the neutralizing agent, which needs to rely on Phosgene is used to synthesize it, but luckily the required ratio is not too large.”

"Then you should be more careful, so that nothing happens." Shi Jian said hastily.

Phosgene is a chemical weapon, and if you are not careful, it will kill you.

Feng Kuang smiled slightly and said, "You don't have to worry about this, what you have to worry about is how to finish the rest of the work, so that the mortar can really be born from your hands."

"Okay, I'm going to see if there is any suitable steel. It would be best if we can make Type [-]. If it doesn't work, we can reduce the caliber proportionally." Shi Jian said happily.

Feng Kuang nodded and said: "Okay, you go, I will make some mercury fulminate, so that the propellant and the fuze are all available."

Shi Jian bid farewell to Fengkuang, and immediately went into the machining factory to select suitable steel and make gun barrels.

Prior to this, Du Jun had asked the prisoners to reorganize the steel materials into different categories, sorting them according to size and degree of corrosion, so Shi Jian found the steel materials he wanted very easily, about ten centimeters in diameter. steel rod.

Because the mortar barrel was made this time, Shi Jian did not let Meizi and the others get started with the operation. Instead, he held the knife himself and made it strictly according to the specifications of the Type [-] mortar.

Under his personal operation, the gun barrel was quickly made, and the next step was to make other parts.

The Type [-] mortar gun consists of four parts: barrel, seat plate, gun mount, sight and accessories.Because he did not have the ability to produce optical equipment, Shi Jian abandoned the scope, and the accessories were some tools such as wrenches, which were not important. The real difficulty was still on the seat plate and the gun mount.

Although there is a structural diagram in hand, there is no detailed size on it. Everything depends on Shi Jian's little experiments.

For two whole days, Shi Jian hardly left the machine tool, and even had his meals delivered directly to him. Only at night did he drag his exhausted body back home.

Xia Qing knew that Shi Jian was busy making new weapons now. Although he was about to give birth, he didn't have any complaints, which made Shi Jian feel very sorry.

Under Shi Jian's research that almost forgot to sleep and eat, he finally made the first mortar.

Strictly speaking, the data of this mortar is very different from that of the Type 45. Except for the same barrel caliber, there are some differences in other parts, but it also achieves an elevation angle range of [-] degrees to [-] degrees.

It weighs even more than Type [-], a full [-] kilograms, but it can be easily carried by one person, so it can be considered light.

After the cannon body was finished, Shi Jian went to the casting workshop to start the production of shells.

The production of cannonballs is more troublesome than the cannon body, and this trouble mainly comes from the non-standard molds. The produced cannonballs are either too large to fit in, or too small in size, and the range is too low due to the low chamber pressure. to the gunner.

However, nothing is difficult in the world, as long as there is a willing heart, after repeated failures, finally a shell with a qualified size is produced. Shi Jian immediately took the sample to find Fengkuang, and Fengkuang filled it.

After all the preparations were completed, Shi Jian and Feng Kuang took the mortars to an open space at the foot of the mountain and conducted the first test firing.

Shi Jian first used an engineering shovel to dig a [-] cm long and [-] cm deep pit on the ground. This is the pit for the mortar to use. Of course, it is also possible to keep the ground level in case of emergency. .

Then Shi Jian put the mortar into the pit, then opened the straps, stretched the gun mount, adjusted the leveling machine to keep the supporting legs roughly level, and then fixed the tight handle to make the mortar stand firmly.

With the mortar shell in his hand, Shi Jian turned his head and said to Feng Kuang, "Old Feng, why don't you stand back a bit, don't blow up the bomb, and tell us everything."

"Where are you talking so much nonsense, you're so stupid." Feng Kuang urged without moving.

Shi Jian took a few deep breaths, pulled out the cannonball safety, held the cannonball upright with both hands and placed it on the barrel mouth, and then gently let go of his hands.

The shell slides down smoothly along the barrel, and when the tail touches the firing pin at the bottom of the barrel, the fuze made of mercury fulminate is immediately triggered to ignite the propellant, and the shell is launched.

The two saw the shell fly out of the barrel, draw a beautiful curve in the air and land on the ground more than 400 meters away, where it exploded immediately.

"Great, it's a success!" Shi Jian and Feng Kuang cheered together.

The shooting distance did not reach more than 1000 meters, but this should have a lot to do with the angle of Shi Jian's gun body. I believe that after continuous testing, even if the maximum range of the Type 500 mortar is close to 1000 meters , There are always [-] meters.

While the two were clapping hands in celebration, they heard an eager shout from behind: "Mr. Shi, come back quickly!"

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(End of this chapter)