Chapter 425 What to do next?
At this time, several people had already arrived at the testing site. Since they had decided to do it, they could communicate with the students and do some preliminary work.

Several people told Gao Zhendong's idea to the key personnel, and everyone looked happy, as if it could be done.

A student thought for a long time and then asked a question. He should be a relatively active student. He asked questions while the teachers were all there.

"Teacher Gao, this rebound ring you mentioned doesn't seem to be easy to set up."

Since you are a school teacher, there is nothing wrong with this title.

Gao Zhendong thought about it and drew a picture: "For example, this is just an idea. You can figure it out yourself. You don't have to do it the same way. Killing a pig or a butt, everyone has their own way of killing. The main thing is to achieve a jump explosion. As long as it's appropriate, you can stuff some explosives into the fuse. But in that case, the fuse will appear a little bigger. Just be able to achieve a balance."

As for whether this ring is a wind deflection ring, a rebound ring, or an auxiliary device to increase the firing rate at a small angle, Gao Zhendong has never seen the cross-section and drawings of these bullets, so he guessed. However, he has seen all the bullets of this rocket launcher, and only this air-burst grenade has this ring, which seems to explain a certain problem.

The idea is given to you, and you are free to play your role in implementing it.

Professor Luo looked at his students and said, "You still haven't grasped the core of what Teacher Gao said. The core is jump explosion! Jump explosion!"

The student touched his head and chuckled.

Professor Liu's students also gathered around and asked Professor Liu: "Teacher, I have a question. This muzzle-loading grenade is achieved by the prefabricated grooves and rifling. This requires the bullet to enter the chamber in a certain posture, which is not easy to handle."

Gao Zhendong shook his head: "You have many choices." This is not copying something, there are so many ways to go.

Students are happy when they hear it, and they have many choices?

"First, you can keep the warhead of the bullet, then design the high- and low-pressure charge parts into the cartridge case to make a new bullet. You can then design it in a traditional automatic way. But in this way, the universality of the ammunition will be compromised."

Others think this is a solution, but it is a last resort, mainly due to funding and procedural issues.

"Secondly, let's use the existing bullets as they are designed and think about the launcher. You guys who deal with firearms should know about revolvers, right? Make the revolver a little bigger, just like tying six grenade launchers together. This way, we can make a six-shot automatic launcher."

"Even from the characteristics of this grenade, as long as the revolver cylinder also serves as the launch tube, even the barrel can be saved. It is as simple as it can be. Grenade machine gun, grenade machine gun, you can't really limit your thinking to 'machine gun'. The core of this thing is automatic grenade launch."

When everyone thought about it, it was true. For someone who deals with firearms, if he said he didn't know about revolvers, that would be too disrespectful. However, this was not necessarily true. No one knew how the famous kind gun - the police revolver - was made.

This method is very simple to implement, but when it comes to the muzzle-loading grenade, the current breech-loading revolver structure cannot be used. Instead, it must return to the structure of the oldest muzzle-loading revolver pistol.

A student asked Gao Zhendong: "Teacher Gao, this method is good, but isn't the firepower sustainability of 6 rounds not very good? Can we load more?"

Gao Zhendong shook his head. "Theoretically, the revolver structure that best balances space utilization and firepower sustainability is 6 rounds, 6 rounds around the center axis. Because the rounds of the revolver are all on the outermost circle, the more rounds you load, the worse the space utilization."

Let’s not talk about anything else, just take the AA-12 fully automatic shotgun, which became very famous in the future but no one cared about it. The drum magazine was a typical piece of junk. The bullets were all in the outermost circle. It was big and heavy and couldn’t hold many bullets.

"But you don't have to worry. In fact, the firepower of this thing is 6 rounds, which is enough. If you don't believe me, ask your comrades in the army."

The grenade launchers that will be installed in China in the future will not have a large ammunition capacity. Can they not be made with a larger ammunition supply? That is definitely not the case. Imitation MK-19, AGS-30 and the like are sold everywhere. The reason why we don't use them is that they do not meet our usage requirements.

——It’s not convenient to carry it around.

Our habit is to wander around even when fighting a positional battle.

It was a positional war: just fire madly at one point until the end.

Actual positional warfare: one combat group controls multiple positions, fighting here for a while and there for a while.

Even in actual combat, it is not uncommon for a person to prepare weapons in advance at multiple preset positions, fight here and there, and fight against the enemy for half a day or a day.

Sure enough, the student turned his gaze to the military representative, who smiled and said, "Chief Engineer Gao is right, six rounds are enough. Of course, a bigger one would be better, provided it's not too heavy, hahahaha."

We tried our best to make the 12.7mm machine gun weigh only 26kg. In addition to being fooled, it was also due to our straightforward pursuit of firepower and mobility.

Professor Liu smiled and said, "Then what other options are there?" Gao Zhendong smiled and said, "You guys are in the firearms business, so you should be more familiar with mechanical automation than I am. But I have some simple suggestions, which may not be correct."

This made Professor Liu and the others blush a little, but then they thought, this is a teacher from their school, so it's okay.

"If you want a bigger one, you will definitely have to use a belt-fed ammunition. Compared to the uncertain posture of the bullet, the direction of the belt when it enters the automatic mechanism is relatively fixed, right? In order to position the grenade in the launcher, in addition to the rifling prefabricated groove, there is also a positioning groove, right?"

Everyone nodded, this was true.

Professor Liu had already figured it out in his mind without Gao Zhendong saying anything more: "Chief Engineer Gao means to make a positioning protrusion or something like that on each link of the ammunition chain to fix the grenade's entry posture in advance? At the same time, the positioning protrusion docks with the automatic machine and the guide device inside the barrel to achieve the position of the grenade entering the chamber?"

Professor Liu is so talented. You are the one who answered the questions quickly. You have said everything I wanted to say.

Gao Zhendong nodded: "For this method, the bullet shape may need some changes. For example, in order to ensure the reliability of the guide positioning groove, a wide guide groove should be made in front of the positioning groove. At the same time, attention should be paid to the coordination of these grooves and the negative line position of the rifling groove. However, the changes will not be too big, and the possibility of realization is still quite large."

Another small problem is that it is a little more difficult for the comrades who load the bullets, as they have to align the bullet first.

Everyone thinks this is a good idea. If you want to be light, just carry fewer bullets and put them in a belt box like the Russian RPD. If you want more sustained firepower, then use a large belt box.

And there is no need to worry about not being able to produce results, because there is a rotary structure as a guarantee, which is basically stable. The rotary structure is too simple and does not cost much money. In case the ammunition belt cannot be developed, there is that structure to ensure actual results.

The military representative and Professor Liu happily wrote down Gao Zhendong's words. It turned out that asking more questions was beneficial. Now, the technical part of the project application materials was half completed, and there was also a plan for comparison.

In fact, Gao Zhendong originally didn't want to say so much. It would be best to let the researchers figure it out on their own. This thing is not a high-tech product with major technical barriers. What he said, these gun guys can remember it if they think about it more.

But since the question has been asked, I have to say a few words, otherwise it will have a big impact on Gao Zhendong himself.

This afternoon, Gao Zhendong's class was supposed to be half a day, but it stretched into a full day. But overall it was worth it, as the cannons in the hands of the infantry were still very important.

At about the same time, at the Haihe Estuary Institute 1761, Yu Yuncheng looked at the test data brought over by the experimenters and made a decisive decision.

"Well, it's almost done this time, let's go to the capital!"
-
In Gao Zhendong's office, Gao Zhendong was looking through the test data he brought with him, and Yu Yuncheng explained it to him while drinking tea.

"Chief Engineer Gao, it seems that the process time optimization you mentioned is still possible. From the results of the in-depth sampling, the crystal structure changes most dramatically in the first 48 hours of annealing, and then gradually become more stable. In other words, we don't need to complete the original 45-day annealing time. Based on the requirements for the crystal structure you gave, my suggestion is 10 days."

Gao Zhendong nodded: "Well, yes, strictly speaking, 3 to 5 days is fine, but from a safe perspective, your suggestion of 10 days is better. Good things are worth waiting for."

Yu Yuncheng smiled: "Finally, I have lived up to your expectations. This thing has been made. I have calculated that the overall crystal utilization rate is very high, and the structural yield rate is also very good. It's just that the crystal is a little small."

Gao Zhendong smiled and said, "Don't underestimate it, it's very useful. So, did you bring any qualified finished crystals this time?"

Speaking of this, Yu Yuncheng was no longer sleepy: "Except for the necessary test samples, I brought you all the qualified ones this time. It's not a lot, but the quantity is not small. In case there are problems on the way, I also dispatched comrades from the army to escort you."

Gao Zhendong was delighted: "Okay, great. Then, you go back and finish the finishing work, and then prepare for the project acceptance."

Yu Yuncheng nodded: "Okay, by the way, Chief Engineer Gao, after this, are there any other projects?"

Gao Zhendong thought about it and decided that there was nothing urgent for the time being, but he could still be given some directional advice.

"I don't have one here at the moment, but I have a suggestion."

"You say." Yu Yuncheng was very interested. The direction proposed by Gao Zhendong must be unique.

"You can consider doing CVD, whether it is to open up new paths or improve existing technologies."

At this time, CVD (chemical vapor deposition) is in the dark period before dawn, but there is still a lot of potential in it.

(End of this chapter)