Chapter 591 Bulletproof Material (Part 2)
There are several choices, the original bulletproof steel plate of the old red flag, but Guo Tailai felt that there should be a better choice for this kind of bulletproof material twenty years ago, so he can give it up.
At present, the latest bulletproof steel plates are available at home and abroad, and the other is the composite armor currently used by tanks in active service. Of course, according to Guo Tailai's unique requirements, high-strength bulletproof titanium alloy is also an option.
Guo Tailai didn't look at the attributes of various labels for the time being. He took samples of the materials and sent them to the shooting range to shoot them with live ammunition to see the effect.
The manufacturing process of the inspection car was attended by representatives from the General Assembly and the Central Security Bureau. It was no problem to ask them to coordinate the shooting range.
On the shooting range of the Kyrgyz Military Division of the Shengjing Military Region, 30cm by 30cm square plates made of several materials are lined up. What Guo Tailai directly considers is the thickness of 10 mm, and other thicknesses, so that Mr. Zhang and the others can distinguish the bulletproof grades during production so as to separate the different grades. What Guo Tailai wants to do is only the highest level.
Various types of pistols, submachine guns, assault rifles, sniper rifles and various types of bullets are used in turn, and the bulletproof level is determined by the actual effect. The same is true for bulletproof glass. However, the direct choice for the glass is ten centimeters thick, so try to be foolproof.
The representative of the Central Security Bureau was quite satisfied with the live ammunition test requested by Guo Tailai. This is much more intuitive than looking at the data, and it can also make them more aware of the bulletproof performance of these materials.
When the pistol goes into battle, it is basically just tickling these different bulletproof plates, with some slight marks on them, which can basically be ignored.
The submachine gun, because it uses pistol bullets, only has a longer barrel length, but it also failed to leave many marks. Even the P90, which claims to be able to penetrate titanium alloy body armor, is still disappointed when faced with various bullet-proof plates with a thickness of 50 mm.
Small-caliber assault rifle, 5.56mm caliber, using NATO bullets, ten meters distance, 950 meters per second bullet velocity, can make 1-2mm pits. It can be said that this has reached the bulletproof level of B5 level.
The 7.62mm caliber assault rifle and the NATO 51mm soft lead nuclear bullet made pits of two to seven millimeters, but there was no way to penetrate them. The bulletproof standard of B6 level is like this.
Replaced with 7.62X51mm NATO standard hard steel core bullets, at a distance of ten meters, ordinary bulletproof steel plates were directly penetrated. The composite armor was fine, leaving four or five millimeters of pits, and the titanium alloy bulletproof plate was even shallower.
Basically, in addition to ordinary bulletproof steel plates, as long as the composite armor and titanium alloy bulletproof plates reach this thickness, almost all of them can achieve B7 level bulletproof function.
The AK47 uses Soviet-made 7.62x39mm intermediate-power bullets. The bullets are much less powerful than the NATO-standard bullets, and there is no problem in sweeping them on the car.
Finally, after replacing it with a 12.7mm NATO BMG ordinary bullet, it can basically penetrate directly with one shot. Not to mention the 12.7mm armor-piercing projectile, which is definitely more lethal and cannot be protected.
"Can it be thickened?" The representative of the Central Security Bureau, a colonel surnamed Liu, couldn't help asking after seeing the effect. For the chief to use, of course, the safer the better.
"Ordinary cars only have an average steel plate thickness of less than one millimeter." Guo Tailai smiled wryly: "Ours is already ten millimeters, one centimeter thick. According to the size of our car body, every additional centimeter of composite armor thickness, the car It is estimated that the weight will increase by nearly two tons, and now it is more than four tons. If it is heavier, I am afraid it will affect the performance of the car."
"Not every part of us has to be this thick, mainly the fuel tank chassis of the passenger compartment and the vicinity of the engine. Other parts use steel plates of this thickness, and the main protective parts use thicker steel plates, can't we?" Colonel Liu suggested: "This way It won’t add too much weight, right? As far as I know, some bulletproof vehicles used by heads of state have a door armor that is more than three centimeters thick.”
"It is possible." Guo Tailai thought for a while and said, "But we may have a better way."
"Tell me." Colonel Liu asked with great interest.
"The simplest one, we use titanium alloy to make it, which will be at least 40% lighter." Guo Tailai quickly replied: "In addition, we can make some special interlayers. Well, you can ask Professor Shi Zhicheng from the Materials Department of Shuimu University What is the result of the research. If it can be practically applied, we can consider a composite armor composed of multiple layers of soft and hard bulletproof materials, which will have a better effect and greatly reduce the weight."
When Colonel Liu heard this, he immediately found a place to call to inquire without further ado. It didn't take long to return to the test site: "Professor Shi's latest research results will send some samples to test tomorrow."
After finishing speaking, Colonel Liu looked at Guo Tailai with some doubts, as if wondering how Guo Tailai knew about Professor Shi's research project.
"Professor Shi's research is due to an idea of mine." Guo Tai could see Colonel Liu's vigilance, and explained casually: "At that time, I discussed this research direction with Chairman Zhao of the Southern Group."
After listening to Guo Tailai's explanation, Colonel Liu's expression eased a little. These things can be investigated, Guo Tailai should not lie. Now he wants to know how strong the bulletproof effect can be achieved with Professor Shi's research results.
B7 is already the highest level of bulletproof for ordinary civilian vehicles, and these materials are enough to build them. What Guo Tailai needs to consider is the safety of the review vehicles and daily vehicles used by national leaders. It is imperative to use new technologies and pursue higher bulletproof levels.
At Colonel Liu's insistence, the thickness of the bulletproof armor was increased to 1.5 centimeters. However, Guo Tailai plans to use titanium alloy bulletproof for these bulletproof vehicles, and will also use titanium alloy-ceramic-titanium alloy-Kevlar-liquid bulletproof material-Kevlar-titanium alloy layering, soft and hard combination, bulletproof level will be higher.
For the inspection vehicle project, all materials were allocated with priority, and the project team received Professor Shi's latest research results early the next morning. What makes Guo Tailai happy is that the thickened shear liquid developed by Professor Shi is not in a fluid state, but in a gel state. Normally, it is very soft and does not flow, but it will break down in microseconds under high-speed impact. Hardened instantly.
Combining these things in layers is a high difficulty, but it is not a big problem for Guo Tailai. In just one morning, Guo Tailai made a test target and tested it again.
The previous steps are omitted, starting directly from the 7.62mm hard steel core bullet. Successful defense.
Replace it with a 12.7mm ordinary BMG bullet. After one shot, a large depression appeared in front of the target, exposing the Kevlar and gel layer. Turned over, the bullet didn't penetrate the target, just a small bump behind it.
It was replaced with a 12.7mm BMG armor-piercing bullet again. After one shot, the bullet was directly embedded in the target. Although the warhead penetrated the target, it couldn't move forward any further.