Chapter 121 A contradictory story (3k)

On one side was the defending side headed by General Guan, and on the other side was the attacking side headed by General He. The one who observed and judged the pros and cons was the 5DL model chief designer, General Luo. However, he did not follow the test all the time. After all, the test would take many days and he did not have the free time.

To conduct a serious test is not as simple as firing two shots to see whether the object penetrates or not.

For example, if you want to cut the bullet hole profile and observe the penetration situation, it will not be done in a short time.

The test was a large-scale one, with more than one type of cannon, bullet, and armor.

The cannons are original ones from the north, but they can only fire original bullets. It is meaningless to fire them with old domestic imitation bullets. It is useless to fire them with new bullets.

There are two types of domestically produced guns. One is the old imitation rifled 100-caliber gun that fires old-style armor-piercing discarding sabot shells.

The other is the new 105 smoothbore gun. Because the self-tightening of the squeezed barrel can achieve better chamber pressure performance under the same weight, Mr. He decided to go all out and increased the caliber of the gun by 5mm, and the amount of propellant was also increased accordingly.

However, this thing is a trial product, with only two doors, one for use and one for backup, and all parameters have not yet been adjusted to the optimal level.

This gun fires the new high aspect ratio fin-stabilized discarding sabot armor-piercing projectile.

A total of two types of fin-stabilized discarding sabot armor-piercing projectiles were trial-produced, one with a tungsten carbide head and the other with pure steel.

As for armor, Mr. Guan took out the composite armor, explosive reactive armor, and traditional homogeneous steel armor that were currently being applied for finalization. Anyway, he was just playing with Lao He.

The test has been going on for several days, and people are becoming more and more excited as the test progresses.

There is a way out this way!
Mr. He had been feeling aggrieved for so long and finally got some relief, but not all.

At the test site, all the tests were finally completed. Mr. Luo, Mr. Guan and Mr. He were discussing the full set of test data.

There was a lot of data, and it took the three of us a lot of time to compare and communicate.

In fact, they could have waited until the experimenters had completed the comparative analysis of the data before doing this, but they couldn't wait.

The data is boring, but they find it incredibly beautiful.

The first thing they looked at was the data on hitting homogeneous steel armor. This is the most intuitive thing, and the penetration depth is clear at a glance. For armor-piercing ability testing, it is the most standard power data.

While looking at the data, Mr. Luo talked with He and Guan: "This old-fashioned bullet is really not good. The weakness of the normalization effect is too obvious. Whether it is the original version from the north or the imitation we made, it is okay against vertical armor, but the effect against inclined armor is greatly reduced."

Guan and He nodded as they watched. This was also a common problem of armor-piercing discarding sabot shells. Due to the large diameter, the normalization effect was obviously weak. When hitting armor at a large angle, the power dropped sharply. The vertical penetration and inclined penetration could not be simply converted using trigonometric functions.

When he saw the wing stabilizer detach and penetrate, Mr. Luo was happy: "This type of bullet is good. With the same tungsten carbide armor-piercing body, the thousand-meter penetration depth is about 1.7 times that of the original armor-piercing bullet from the north, and the normalization effect is much better."

The name of this fin-stabilized armor-piercing discarding sabot projectile is too long, so the Grassland Tractor Factory referred to it as "wing-stabilized armor-piercing discarding sabot", and the English abbreviation APFSDS does not exist now.

Guan Zong smiled and said, "Well, this is a good type of bullet, and the gun itself also provides a lot of help."

Mr. He had something to say: "I think there is more potential. First, the new steelmaking process is still being developed in Beijing, and the old cannon steel is used. Second, this is a start-up, and many parameters are still under study. It is not the optimal solution."

Mr. Guan laughed at him: "Look at how much you can endure."

Mr. He did not take credit for it: "It's not my ability, it's Comrade Gao Zhendong's ability. I'm just the one responsible for the ironwork."

At this time, Mr. Luo came across the data on the steel core wing stabilizer and laughed out loud with joy.

Guan and He didn't understand why he was suddenly so happy. They leaned over to take a look, and were even more confused. The penetration of this bullet was slightly better than the old one, but limited.

Mr. He also teased Mr. Luo: "Mr. Luo, what are you laughing at? Although the penetration of this steel core wing-stabilized breakaway projectile is better than the original old projectile, it is only a little more than 10%. Compared with the penetration of tungsten carbide, it is not very meaningful."

Mr. Luo is the chief model designer. What he has to consider is slightly different from those of Mr. He and Mr. Guan, the two subsystem leaders who are seeking perfection.

He shook his head: "Lao He, you are wrong. This is of great significance. Do you know what it means?"

Lao He also shook his head: "I don't know, you know it and you say it."

"This means that we can get more firepower at a cheaper price than the existing tanks using expensive tungsten carbide armor-piercing bodies. What's wrong with 10%? I think it's good, and you said there is still potential. He and Guan finally understood that the chief engineer is the chief engineer, and he has to consider more things than himself.

Mr. Luo patted the data record of the steel core wing stabilizer and sighed: "You should know that tungsten carbide is much more expensive than steel core bullets. We can develop two bullets at a time, one is expensive, but the effect is very good, and the other is also good, but very cheap. That's great, that's great."

It is said that Mr. Luo is the chief designer. He has already figured out the story of the advanced version and the monkey version.

But there is no other way around it, he is poor. Being able to get stronger firepower than the current one at a low price is already very satisfying to him.

Mr. Luo, who got good news in the first test, looked through the records at the back with great interest.

"Old Guan, your two new armors are good. Old 100-line, whether it is the original from the north or our imitation, whether it is standard charge or strong charge, they can defend well."

General Guan nodded with a smile: "It's not mine, it's Comrade Gao Zhendong's in Beijing. I dare not take the credit for it. But the protection of these two armors against the existing mainstream tank firepower is really beyond reproach."

Seeing his cheerful look, Mr. He couldn't help but pour cold water on him: "Look at how capable you are. Didn't your explosive counterattack still get penetrated by my new cannon + new bullet?"

Guan Zong was not angry either. The two had been fighting for several years. He smiled and said, "You rely on luck, and your all-steel wings are stable. You have no temper when wearing my composite armor."

This is true. When it comes to explosive reactive armor, its weakness is that it is generally not effective against wing stabilizers. Therefore, whether it is tungsten carbide or all-steel wing stabilizers, it will cause damage to the main armor behind the explosive reactive armor.

But with the all-steel ones, you have to take your chances, some work, some don’t.

However, the tungsten carbide wing stabilizer can basically be effective, but the effect will be affected.

However, the composite armor's protective effect against the penetration of the all-steel wing stabilizer is very good, and it was not penetrated at all.

As for the tungsten carbide wing stabilizer and composite armor, there is a certain probability of penetration, but the probability is not high.

Mr. He was very upset by what Mr. Guan said, but when he thought about it, from being helpless last time to being able to fight back now, this was a great improvement. My cannons and bullets still have potential, so I am not afraid.

Thinking of this, Mr. He felt that he was ready again, and he spoke madly to Mr. Guan: "Don't be complacent, old man. My cannons and bullets are not ready yet. When they are, I will show you how I will deal with you."

Mr. Guan didn't care and still had a smiling face: "Then we'll talk about it after you've finished it. Anyway, I'm still a little ahead now, hahahaha."

Looking at these two middle-aged kids who had been fighting since they participated in the tank imitation and improvement project, Mr. Luo smiled and shook his head and ignored them. He had seen this kind of scene many times, but in the past, Old He had taken more advantage.

The other researchers and testers around were also holding back their smiles, as this was a regular feature of all previous A-type shell confrontation tests.

Mr. Luo waited until the two of them had fought to their heart's content before he said, "Alright, alright, both of you stop for a moment, let's discuss how to use these new things."

Jiadan and the other man stopped bickering and came over.

"Let's talk about armor first. Saving lives takes priority. Old Guan, you talk first." Mr. Luo said to Mr. Guan.

Guan thought for a while and made a suggestion: "This is what I think. If we want to use composite armor as the main armor for the 5DL, we will have to make major changes to the turret process and even the entire design, which is a bit costly. If we use external composite armor, the size and weight of the composite armor are significantly higher than the explosive reactive armor."

Mr. Luo nodded and said, "You are right. We should not make drastic changes to the 5DL. Moreover, the engine power of the 5DL is not high. If we add the weight of the composite armor, the power-to-weight ratio will be bad and the maneuverability will be a problem."

Guan continued, "So my idea is to improve the 5DL, mainly with external explosive reactive armor. The process is simple, the weight is light, and the improvement cost is low. Although it has a certain impact on the accompanying infantry, considering that it is mainly deployed in front of the vehicle body, it can still be overcome."

He glanced at Mr. He and said, "This is fast and cheap, and it doesn't affect the tank's mobility. As for the protection capability, the main missiles from the north have no effect on it. Mr. He's new guns and new missiles will also be affected by it. Combined with the improved 593 cast armored steel turret provided by the Beijing Steel Rolling Mill, it should be completely sufficient."

Mr. He felt a little depressed by Mr. Guan's glance, but there was nothing much to say. At this stage, he was still the weak one.

"As for the composite armor, it can be used as the main armor of the next generation of tanks. By the way, I will think of ways to optimize it. Comrade Gao Zhendong has done enough. I have to do something myself." General Guan summarized.

"Well, that's a good idea. What about you?" Mr. Luo turned to Mr. Guan.

"This one of mine still needs to be improved, but I'm sure it can be done in a short time. However, the breech size of this gun is much larger than that of the old 100-line, and the structure and shape are also different. It is not easy to install on the existing turret. My suggestion is that if the next generation of tanks is put into production quickly, then the 5DL modification should not be equipped with this gun at all, and the 5DL that has been produced cannot be replaced for the time being. Of course, if the next generation is slow to be put into production, then the modification of 5DL can consider using this gun."

　First update

　
(End of this chapter)