readx;?“ Start pressurizing the pressure chamber! ”

"Understood, pressurize the pressure chamber!" A technician repeats the command, glances up at the dashboard, and presses the pressurization button. Pen % fun % Pavilion www.biquge.info

The control room and the laboratory are soundproofed, so that you can't hear the piston press outside, and you can't see any changes through the thick bulletproof glass. However, from the computer display of the console, it can be clearly seen that the pressure in the pressure chamber is increasing.

There are two readings, one is a first-stage pressure chamber, and due to the large space, the reading rises slowly. In the secondary pressurized chamber next to it, the readings are beating rapidly.

"Approaching the Critical Valve!" The technician looked intently at the screen and said calmly in a calm tone.

Everyone raised their attention, and some of the people who couldn't squeeze into the console stood behind bulletproof glass, their eyes unblinking at the front of the air cannon below.

"The pressure in the secondary pressure chamber has reached the critical valve, three, two, one!"

As his last reading exited, the cube suddenly seemed to explode on the target at the front of the air cannon.

This degree is too fast, because the target is firmly fixed on the steel frame and does not move, the vast majority of people do not react, occasionally one or two people feel strange, but they also think that they are dazzled, still staring at the target tightly, there is no appearance, the warhead has just been shot, hit the armor plate.

Reflected on the computer screen, the pressure chamber readings are also flying down.

"What's wrong?" Many people were still unconscious, and when they saw the numbers jumping down quickly on the screen, they asked blankly.

"The air cannon has been fired, below"

"Huh? Already cummed? ”

At this time, everyone suddenly realized, hurriedly pushed open the door of the control room, and rushed to the air cannon room below.

Zhu Chief Engineer is a lot older, but he rushed to the front, and the others were not easy to rob him, so they all got out of the way, let him be the first to go down the stairs to the air cannon room, and rushed to the target.

The target of the experiment was a small one-foot-square composite armor plate, which was firmly fixed to the base by clamps on the left and right sides to withstand the impact and not tip over.

The surface of the steel plate is sprayed with digital camouflage, and anyone who looks at it will know that it is an armor plate, and will not think of it as an ordinary plate.

Chief Engineer Zhu did not rush to observe the results of the penetration, but gently brushed his fingers over the edges of the polished armor plates, carefully observing the structure of the armor.

From the edge fault, it is clear that there are five layers of armor plates.

The outermost and innermost layers are glowing with the same bright silver metallic luster, which is naturally a forged special alloy steel plate. He measured it with a tape measure, and each layer was seven centimeters thick.

On the second and fourth layers, it is white, and Chief Engineer Zhu, who knows the composite armor structure of the base, understands that this is the compacted aramid fiberboard. He also used a tape measure to roughly measure it, and sure enough, it was the same as the index determined at the meeting, each layer was 1.5 centimeters thick.

It is sandwiched in the core by two layers of alloy steel plate and aramid fiber board, showing a dark and dull tone, which is a bulletproof ceramic plate with a thickness of three centimeters.

These five layers of materials represent the five materials of rigidity, softness, hardness and rigidity, and the performance of the warhead force is also different, so as to reduce the penetration layer by layer and achieve the protective effect of a single material armor.

When the warhead passes through the outer alloy steel plate, it will be blocked and dragged by the inner layer of extremely tough aramid fiberboard to form a side force, forcing the warhead to roll, expanding the force area, and quickly reducing the penetrating force. When the warhead breaks through the aramid fiber layer and continues to move forward, the extremely hard ceramic plate becomes its next obstacle. Since the warhead is deformed in most cases, it becomes very difficult to penetrate the extremely hard ceramic plate. And even if it shatters the ceramic plate, because when the ceramic is broken, it will spread to the surroundings in a net-like shape, so it will consume a lot of impact force, even if it breaks through the barrier of the ceramic plate, it will be netted by a layer of aramid fibers again, relying on the fine network structure and strong toughness to block the warhead.

When the warhead can continue to move forward, it will also face the interception of the last layer of alloy steel plates. At this time, most of the kinetic energy has been consumed, and the heavily deformed warhead will be much more difficult to penetrate the steel plate than it is when it penetrates the first layer of steel plate.

Composite armor is like this, through the action of different materials and different physical characteristics, the incoming warhead can be deformed as much as possible, change the direction of impact, consume kinetic energy, and finally achieve the purpose of protecting the rear members of the armor.

It is precisely because of these unique combination designs that the armor plate, which is only 20 centimeters thick, can more than double the protective power.

Zhu Chief Engineer confirmed that the armor plate was indeed made according to the indicators determined at the original meeting, and even scraped some powder from the edges, carefully wrapped it on white paper, and prepared it as a sample for testing.

Only then did he look at the site where the warhead hit.

The part where the armor was hit was located in the center, and a small hole was made in the digital camouflage. The hole is not large, and it is not as thick as a little finger, but from the inner diameter of the hole, it is very smooth.

Obviously, the penetration of the warhead is extremely high, and the alloy steel plate with a thickness of seven centimeters in front of it is like a scalper, which is easily penetrated, and it does not have a blocking effect at all, so that such a smooth and round small hole will be formed.

He took out a bamboo chopstick from his pocket and poked it through the hole until it was held against and could not go any further.

Sizzle!

Holding their breath around, the onlookers all gasped like a toothache.

The chopsticks are only a little bit in.

Visually less than eight centimeters!

I actually measured it with a tape measure, and it was indeed only 7.3 centimeters.

That is to say, the warhead did not even pass through the aramid fiber layer, and to put it more broadly, the warhead was stuck inside, counting the size of the warhead, it had just penetrated the aramid barrier at most, but the kinetic energy had been exhausted, and it was blocked by the ceramic layer outside, and it did not penetrate into it at all.

"How much was the blocking diaphragm just now?" He didn't raise his head, still intently observing the hole, and asked.

He actually remembered the exact value very clearly, but he still asked.

"Seems to be three hundred penetrations"

"That's the number."

"It's remarkable, three hundred penetrating warheads, not even a ceramic plate has broken through! According to this calculation, the protective power of this piece of armor is not 400, and I think it may reach 500! ”

"What is the theoretical value we calculated?"

"Five hundred and thirteen, basically the theoretical maximum after all!"

Only then did the experts wake up from the shock and began to discuss excitedly. Some of them didn't quite know what it meant, and they were simply elated, but for Chief Zhu and experts in armor, it was a great achievement.

The kinetic energy of the warhead does not decrease in equal proportions, but decays rapidly in a curve.

Therefore, if the protection force is only four hundred, then the warhead will at least penetrate the ceramic plate in the early stage, and then it will stop moving in the second layer of aramid fibers.

But now the most optimistic estimate is that it has just stopped in front of the ceramic plate, and it is still stuck in the aramid fiber layer, then this is terrible!

Four hundred?

Five hundred is possible!

Even reaching the maximum value of the theoretical design is not necessarily!

Theory usually only represents the upper limit, which is basically impossible to achieve in practical application, and it is very remarkable to be able to get a little closer to the theoretical value, which shows that the designer has a very deep foundation in order to turn theoretical design into practice.

Judging from their early contact, although Guan Fei knew a lot and was proficient in electronics, mechanics, and chemistry, he was all general knowledge of civilian products, and he was not deeply involved in weapon design. At the previous meeting, he also asked about many relevant requirements, design principles, and key elements for experts from China, which showed that he really didn't understand very well.

However, the design scheme that was guided and finalized by him was able to achieve the actual effect close to the theoretical maximum, which was completely beyond the expectations of Chief Engineer Zhu.

This is still the best angle of incidence of 90 degrees, and if it is welded according to the inclination angle of the turret design, it is not difficult for its protection force to reach 600 or 700!

Is this the blind cat who ran into a dead mouse and stumbled into it by mistake, or is he actually hiding it deeply, and it is indeed calculated through careful design?

They didn't say a word around the armor, they were always silently testing, and they recorded the test data in a notebook.

"In fact, there is no need to be so troublesome, we have flaw detectors here, digital acoustic flaw detectors, eddy current flaw detectors. I think it's better to put down this board with a number, change it again, and continue to test until it finally breaks down, and then go to the laboratory for unified testing. Guan Fei coughed and reminded tactfully.

"Where can I use a new one, it's a waste!" Zhu the chief engineer shook his head again and again, every time they did the experiment, they had to write tens of thousands of words in the pre-check draft, and after repeated arguments and verifications to confirm the feasibility, they would report to the superior to apply for funds, and each time it was approved, it was only a few hundred or thousands of yuan.

In this kind of penetration test, special alloy steel, aramid fiberboard, bulletproof ceramics and other materials must be coordinated with other research departments, and only after accumulating a certain amount can we be willing to smelt a furnace, and then distribute it to several or dozens of projects. After that, it is also very economical to use, a board always has to get a thousand holes, can no longer be used before giving up, that's it, but also to return the scrapped steel plate to the steel mill for re-furnace.

This board is only put through a hole, and it is replaced with a new board, which is simply a cub selling Ye Tian without heartache, oh yes, this field was originally opened by him

Chief Engineer Zhu sighed deeply and persuaded: "Comrade Guan Fei, this armor can still be used, I will see that after a few more tests, I will replace it with a new one." ”

Other experts also echoed the words.

Guan Fei smiled bitterly: "I'm not a big spender. It's just that there are too many tests done on the same board, and it is difficult to distinguish which one of the so many scattered warhead fragments is left, which is easy to cause detection errors. I think this is a large enough board that since the center is perforated, the dispersion is limited to this small piece. So let's use the four corners and do another experiment respectively, so as to maximize the use of this armor, save costs, and get more accurate detection results, what do you think? ”

"Actually, there are four sides, and there is an area close to the center, I think it's okay," an expert said with some reluctance and heartache.

Guan Fei looked at them, and for some reason, his mood suddenly became very complicated.

They belonged to different eras, Guan Fei's era was extremely technologically advanced and materially rich, and he never had the idea of saving too much.

However, these experts are accustomed to living a hard life of shrinking clothes and dieting, and they can save the instruments they use, and they do not need to import them if they can use domestic products, and they have to plan for more than half a year in advance to do experiments, and they also use local methods to save money as much as possible.

And these people, with Guan Fei's seemingly desperate savings, have become the mainstay of the military industry, developing all kinds of weapons and equipment that are not inferior to other countries, and can support the national defense of a big country with national strength and investment far lower than that of the United States and the Soviet Union.

It's not that they don't know that the base doesn't care about this experimental attrition.

This is purely reluctant! The latest book update address, please click here to get the latest chapter of this book to watch