Chapter 19 Heavy Mortars Heavy Machine Guns

Zhang Zhimu followed the people sent by Li Yunhe to a workshop and saw Li Yunhe fiddling with an iron frame with his hands full of oil. Li Yunhe looked up and saw Zhang Zhimu coming and said, "Mr. Zhang, wait a minute, it'll be fine soon." After a while, we will go to the experimental site together. ”

Zhang Zhimu asked, "What are you talking about?" ”

Li Yunhe said to the workers: "Okay, let's load the truck." Then he said to Zhang Zhimu: "We have a new weapon to test." Please go and see it at the scene. ”

Zhang Zhimu saw the worker carrying an oilcloth covered with something to the car, and asked, "Is that your new weapon?" ”

Li Yunhe deliberately sold official affairs and said: "You will know when you arrive." ”

Zhang Zhimu and Li Yunhe came to the test site in a carriage, and before they got off the car, they saw that Li Wei and others were also here. Li Wei saw Zhang Zhimu coming, stepped forward to greet him and said, "This Li Yunhe also told me that this matter was kept secret from Mr. Zhang, and he brought you here." ”

Li Yunhe said with a smile: "You don't have a brain, you keep it secret from Mr. Zhang when you get it, and you can keep it secret if you get it?" ”

The workers lifted the tarpaulin, and Zhang Zhimu saw that it was a mortar, but it was much larger than the previous one. Zhang Zhimu knew that this must be a 120 mortar, because after coming back, he once told Li Yunhe that our small steel cannon is enough to hit people, but the power of attacking hard targets such as batteries is still too small, and it is best to engage in 120 heavy mortars, and the two also briefly talked about the situation of 120 heavy mortars. Since Zhang Zhimu himself knew only a few about 120 heavy mortars, he could only talk about it roughly, but he didn't expect Li Yunhe to be interested in this matter. What I got today must be 120 heavy mortars.

Zhang Zhimu said: "I didn't expect that you guys got out of the 120 heavy mortar, is today the first test launch?" ”

Li Yunhe said: "Yes, today's first test launch, I don't know what will happen?" However, we have experience in the design and production of small mortars, and this time there should not be much of a problem, but I don't know how effective it will be. ”

Zhang Zhimu asked again: "What is the weight of the shell now?" And what is that shelf you're fiddling with? ”

"The weight of the shells is fifteen and a half kilograms, and that's a rack for putting shells into the barrels. We didn't know if it would explode, so we asked people to put it in the muzzle of the cannon, so that we could just pull the cannonball with a rope from a distance. ”

After everyone put the mortars on the racks, they set up the racks for the shells. Li Yunhe personally put a cannonball with a basic charge on the shelf, and then ran away with everyone and hid in a bunker, Li Yunhe said to Li Wei: "Okay, you pull it." ”

As soon as Li Wei pulled the rope in his hand, the **** fell into the barrel of the cannon. As soon as I heard the sound of "bang", the shell was shot out, and when it landed more than 300 meters away, it exploded with a "boom", and the sound of the explosion shook people's hearts.

Zhang Zhimu, Li Yunhe, Li Wei and others cheered.

Li Yunhe said to his own people: "Ten shots in a row." ”

Li Yunhe's men went up separately, reloaded and fired ten rounds in a row, and after no problem, the first-level charge fired ten rounds in a row; The second-level charge, the third-level charge, and the fourth-level charge all hit ten rounds in a row. The sound of the explosion of the shells shook everyone very much.

Li Wei yelled at Li Yunhe: "Li Yunhe, you pig brain, you won't adjust the range a little farther." It was so shocking that I wanted to throw up. ”

Li Yunhe was also unconvinced and said: "Yes, aren't we here to watch the bullet a little clearer." Don't fart if you don't understand. ”

Li Wei said: "Okay, I'll go over and see how far this cannon can hit." ”

Li Wei walked to the mortar, removed the loading rack, personally adjusted the mortar's height to 45 degrees, and then took a shell with more than four charges, opened the safe, and loaded the shell into the barrel from the muzzle. Quickly squatted down, covered his ears with his hands, and the cannonballs "banged" out. After a while, there was an explosion in the distance. Li Yunhe, who was watching with a telescope, said, "Five thousand meters." ”

It turned out that distance markers had been set up on the ground of this test site.

Li Wei fired five shells in a row, and the distance was basically about 5,000 meters. After the fight, Li Wei came back and said to Zhang Zhimu: "Mr. Zhang, our 60 guns will be eliminated, and we will all use 120 mortars." ”

Zhang Zhimu smiled and said: "If you just bomb the infantry, using 120 guns, it's too extravagant." Against infantry 60 guns were enough. Do you remember when you hit Li Zicheng's fort? Wouldn't it have been nice if there had been 120 mortars at that time. ”

Li Wei said: "Of course, as long as these 120 mortars are fired, the battery can basically be solved." However, the 120 guns are good, but transportation is a matter, and it must be pulled by a special car. Unlike the 60 guns, a few people left as soon as they carried them. ”

Zhang Zhimu said: "Yunhe, hurry up and produce a batch of 120 heavy mortars for Li Wei and his use, and in the future, all 60 guns will be distributed to the troops, and they will be specially responsible for the 120 heavy mortars." ”

Li Wei was very happy when he heard this, and he said very professionally: "That's it, Yunhe, you hurry up and produce a batch first, and when we make a shooting watch for you, we will practice it ourselves." ”

Zhang Zhimu also knew that Li Yunhe was telling the truth, the shooting watch was piled up with cannonballs, and Li Yunhe and the others had so many sharpshooters, all of whom were trained with cannonballs.

Zhang Zhimu said to Li Yunhe: "Go back and reward the participating designers, and you still have to study and design new fierce oil bombs, and you must get the shooting watch out as soon as possible." ”

added a sharp weapon, Zhang Zhimu was very happy in his heart.

Taking advantage of the joy, when he returned to his post, Zhang Zhimu said to Li Yunhe: "Let's go, come to me to study the matter of heavy machine guns and pistols." ”

After sitting down with Li Yunhe, and drinking a little tea sent by Yang Yulin, Zhang Zhimu said: "Our automatic rifle is enough to deal with people within one or two hundred meters. However, I found out on board this time that we also needed an automatic weapon with strong long-range firepower. Such weapons and artillery can be used to effectively deal with shore targets, as well as against opposing wooden ships from a distance. Those wooden ships were dead targets in the face of heavy machine guns. And the use of heavy machine guns against cavalry is even more sharp. ”

"Yes, I know what you said, just tell me how to do the heavy machine gun." Li Yunhe took a sip of water and said.

When Zhang Zhimu told Li Yunhe about this, he tried to recall the principle of the Makqin machine gun introduced on TV, although he knew that this Makqin machine gun was not an advanced machine gun in his previous life, and the new machine gun used the principle of gas-conduction automatic, but his own understanding of the machine gun was the Makqin machine gun he watched on TV.

Zhang Zhimu drew a sketch and said: "The most advanced machine gun should be based on the air-conductive automatic principle of an automatic rifle, but I will introduce to you today this machine gun with a short barrel recoil automatic firing principle. You see this kind of machine robbery, at the moment of bullet launching, the bolt and the barrel are percussed, and the barrel stops after recoiling 19 mm, and the lock is unlocked through the toggle mechanism, and the bolt continues to recoil, and part of the energy of the barrel is transmitted to the machine gun through the acceleration mechanism, so that it completes the shell throwing, so as to drive the ammunition supply mechanism, so that the firing machine is ready to hit, compresses the reentry spring, hits the buffer, and then removes under the action of the spring force, and pushes the second bullet into the chamber, locks, and fires again. If we make a shock absorber, we can make the machine gun a single shot, or 10 rounds of 20 bursts, or adjust to a slow rate of fire. For this kind of robbery, we use canvas bullet chains to feed the bullets, and we use canvas to connect the bullets in strings to ensure the continuous fire of the machine gun. The caliber of this machine gun is 7.92 mm, the barrel is 72.1 mm long, the rifling is four right-handed, and the rifling is 240 mm. This machine gun bullet is a 7.92×57 mm bullet and requires specialized bullets. ”

Li Yunhe looked at the sketch drawn by Zhang Zhimu and asked, "What is the barrel on the outside of this barrel for?" And what is that flare thing with the muzzle? ”

Zhang Zhimu said: "By the way, in order for the machine gun to shoot continuously and the barrel will not overheat, we can first build a water-cooled machine gun, which is filled with water inside, and connected to a bucket outside, and you can use circulating water to cool the barrel." This will guarantee us continuous shooting. The flare is the retractor, which helps the barrel reliably retreat. ”

Li Yunhe said: "This guy is not simpler than an automatic rifle." ”

Zhang Zhimu said: "Of course. Otherwise, I'd have asked you to study the machine gun earlier. It should also be said that it is better to have a special trolley for this machine gun, or a special tripod. But that's all I can say, and it's up to you to experiment with it. I hope you'll be able to figure it out by the end of the year. ”

Li Yunhe's eyes did not leave the sketch drawn by Zhang Zhimu, nodded and said, "Hmm." This heavy machine robbed me to go back and study it again. Let's talk about the pistol, right? ”

As a military fan, Zhang Zhimu is no stranger to **, he originally wanted to make a ****, but, and thought about ****, it is simple and reliable, but six bullets are too few, and if you go to the battlefield, it is obviously not enough. The American M1911A1 pistol is an excellent choice, but I don't know if Li Yunhe can make it, so I will first tell them the principle and let them experiment with it.

Zhang Zhimu drew another sketch and said: "A pistol is a gun that can shoot with one hand. The general automatic mode is the barrel short recoil type, and the locking method is the barrel offset type, also known as the barrel swing type or the barrel landing type. After the bullet is fired, under the action of ** gas pressure, or manually loaded, pull the sleeve by hand, the sleeve and the barrel recoil together, because the lower end of the hinge is fixed on the sleeve seat, so its upper end rotates backwards, and after crossing the dead center that plays the role of delayed unlocking, it gradually pulls the tail end of the barrel to swing down and unlock. When the sleeve is re-advanced and pushed into the chamber, the barrel is pushed back into place, because the lower rear end of the barrel is connected with the sleeve seat for the hinge, so when the barrel moves forward, the hinch is rotated forward, and the tail end of the barrel is jacked, so that the two locking ribs above the back of the barrel just enter the corresponding locking groove on the inner wall of the sleeve. The gun has an empty compartment hang-up handle, when the magazine has been shot in the bullet, then the bullet pulls up the empty compartment hang-up, and the sleeve will be blocked in the rear position by the empty-bin hang-up when the sleeve is re-entered. At this time, if you press down the empty compartment and hang up or remove the empty magazine and replace it with a live magazine, the sleeve can be re-entered. ”

"What is the caliber of this gun?" Li Yunhe asked.

Zhang Zhimu replied: "I suggest you try two calibers of this gun, one is 11.43 mm and the other is 9 mm. Large-caliber guns are heavier, each ** can hold seven rounds, and the nine-mm ones can be loaded with fifteen rounds in a double row**. The barrel length is one hundred and twenty-seven millimeters, six right-handed rifling for large caliber ones, and four rifling lines for nine millimeters will do. I guess Li Jing and they probably like large-caliber ones, and we generally use nine millimeters for self-defense. ”

Li Yunhe said: "This time I will be busy for a while. ”

Zhang Zhimu said: "You can arrange this matter." You have to work on artillery, first engage in infantry artillery, accumulate a little experience, and study direct-aim artillery for ships for Fan Chengkun and them. ”

Li Yunhe said: "I heard Li Wei come back and say that it is really too uncertain to use mortars to fight water warfare, and the hit rate is very low when the water surface of inland rivers is stable, and it is even worse when there are waves at sea, and it is necessary to have the kind of artillery that can be aimed like a gun." ”

Zhang Zhimu said: "We call it a cannon with a straight trajectory, and naval guns are generally cannons. Like mortars, we generally call them ** guns. You see, if we use mortars to attack the city gates, it will be very difficult, because our **** is almost vertically falling above the target, and we must develop an infantry gun that can be aimed directly, so that some targets are easy to solve. ”

Li Yunhe let out a long breath and said, "I'll arrange everything in my hands, and I'll study artillery with you when I come back." In addition, you go to see their light bulbs in Yangchang, I heard that they have been lit for more than ten days, and most of them have not been extinguished. ”

Zhang Zhimu heard that this was good news, but he didn't go to Yangchang and them, because the lights were lit for more than ten days and were far from meeting the needs, but it could only show that there was progress.

The light bulb was about to succeed, and Zhang Zhimu thought to himself that if the light bulb could succeed, then he could develop an electron tube. However, before developing the tube, some materials need to be prepared. At this time, Zhang Zhimu regretted a little, because in his previous life, the electron tube had been basically replaced by a transistor, and because he was an enthusiast and had a gall machine, he used the electron tube, and also looked at the relevant circuits of some electron tubes. Fortunately, there was an opportunity at that time that gave him some understanding of tubes. At that time, the blue light-emitting diode technology had not yet been solved, and my unit wanted to develop blue electrons, that is, a blue light-emitting dot with controllable brightness. At that time, Zhang Zhimu and the others wanted to use the blue luminescent powder in the color TV to excite the light with an electron beam to do an experiment, and they can still remember the scene when the brothers took apart a few electron tubes to take a look. These are the memories of the tube, but the principle of the tube is still very clear.

Zhang Zhimu is trying to straighten out his thinking and think about how to make electron tubes. Yang Yulin came in and said that Fan Chengkun from Lingshui Wharf had brought someone here. Zhang Zhimu hurriedly said, "Please come in." ”

Fan Chengkun entered the house and said, "Mr. Zhang, hello." As soon as you came back, you didn't go to Lingshui Pier again, this time we came to see you. ”

Looking at the seven or eight people who came behind Fan Chengkun, Zhang Zhimu knew that Fan Chengkun was not someone who could come over to see him without anything, and his work was enough for him to be busy.

Shi Tao and others in the back Zhang Zhimu all know each other, and there is no need for Fan Chengkun to introduce them, but there are five people who don't know each other.

Fan Chengkun introduced Zhang Zhimu and said: "Mr. Zhang, these are shipbuilding experts invited by Li Mao and Li Gongzi from Fujian. ”

Fan Chengkun pointed to a man in his fifties and said, "This is Mr. Lin Zongwei, this one is Mr. Lin's son Lin Qing, and the other three are also surnamed Lin, and they are all disciples of Mr. Lin." ”

When Zhang Zhimu heard the talent invited by Li Mao, he happily shook Lin Zongwei's hand and said, "Great, Mr. Lin." On behalf of the people of Yaogang, I welcome you. What we lack most now is talent, and you are too timely. ”

After everyone sat down, Zhang Zhimu asked Yang Yulin to invite Mr. Lu Bingyi to talk together.

After Mr. Lin Zongwei drank a little tea, he introduced the situation, because of their Hokkien dialect, everyone sounded difficult, and Mr. Lin tried his best to speak in official language. However, Mr. Lin's official dialect is also very mixed with a very strong Hokkien dialect. But I can probably understand it.

Li Mao personally went to Quanzhou to buy grain this time, and when he was in Quanzhou, he heard a story that the locals have been telling for a long time. It is said that the Lin family, a local shipbuilder for generations, participated in the management of the shipyard, and was finally bankrupt by the pit. Because Fujian is rich in good timber suitable for shipbuilding, and Fujian people are also very good at shipbuilding, gradually Fujian ships are famous for their fortune ships. The Nalin family has built ships for generations and accumulated a rich family business. Later, Lin Zongwei was invited to the government-run shipyard, and the scale of the government-run shipyard and the size of the shipbuilding were not comparable to the ships built by the Lin family before, because Lin Zongwei liked shipbuilding very much, so he was naturally very happy, so he also learned something here that he could not see before, and he did not pass down at home.

Once the shipyard received the opportunity to build a top-of-the-line ship, and since the shipyard had not built such a large ship for many years, the shipyard was very happy. After the first batch of silver from the imperial court was allocated, shipbuilding began with the preparation of materials. The first few batches of silver were allocated by the imperial court very happily, but when the ship was halfway built, the silver from the imperial court came down in time. Shipbuilding was also stopped. Later, the shipyard discussed with the Lin family to see if it was okay, first the Lin family would pay a part of the wood, and then wait until the silver from the imperial court came down, and then give the Lin family certain benefits on the price of wood. And the shipyard can make a document with the Lin family.

The Lin family felt that the imperial court would not repay the debt, and they also had profits, so they agreed to pay the timber in advance. But what I didn't expect was that since then, the imperial court has never allocated silver. The Lin family gritted their teeth and insisted on supplying wood until the ship was almost finished. The Lin family couldn't hold on any longer. I had to park this ship in the dock, but until this shipyard was revoked by the imperial court, the imperial court no longer had the money to care about this ship. It has been more than ten years now, and only the Lin family is still guarding this unfinished ship and can't bear to throw it away, hoping that one day the imperial court will remember that there is still this unfinished ship here. But they also knew that the court was not as good as the day, and it was impossible to take out the silver to manage the ship. But there was no way, the Lin family was unwilling to dismantle the boat and sell the timber. They often sent people to sprinkle water on the boats for fear that the wood would be too dry and crack. So the boat has been kept fine.

After Li Mao met Lin Zongwei, he knew that Zhang Zhimu had always wanted to build a steel-hulled ship by himself, which was exactly the person who could use it. He mobilized them and said, "It's a pity to stay at home with such good craftsmanship, so why don't you go to the kiln, where you can show your skills." After Li Mao introduced the situation of the kiln, Lin Zongwei was moved to take a look. Lin Zongwei arranged the situation at home, and led people to Huai'an by grain ship with Li Mao, and there happened to be a steam ship to transport grain, so Li Mao arranged for a steam ship to entertain Lin Zongwei and them well and send them to Yaogang.

The people of the Lin family opened their eyes as soon as they got on the steamboat. They were all engaged in ships, but they didn't expect that an ordinary lucky ship, after installing a steam engine, would become such a warship that could walk without sails.

Lin Zongwei felt that he had not come in vain with these insights, and this time along the way, Lin Zongwei pestered the captain to ask this and that, and everything felt fresh. However, through contact with the kiln people, they also have a preliminary understanding of the kiln. Therefore, as soon as they arrived at Lingshui Wharf, they asked Fan Chengkun, hoping to see Zhang Zhimu immediately.

------------------

Mechanics of Materials, Theoretical Mechanics, Elastic Mechanics, Fluid Mechanics. --Progress of "Memories of the Southern Song Dynasty".