v2 Chapter 875： New car research and development six

Miss Rehart had been holding back her strength when she heard Bao Zixuan call her name. I thought that it was finally my turn, I must let the American grandma see that they were able to win World War II, not because of advanced technology and good basic materials. It's just that the strategy has more advantages, which has little to do with personal ability and the technical strength of the enterprise. Many people were not convinced by Germany's defeat, especially the engineers.

Mia von Reinhardt stood up and said: "Hi, my name is Mia von Reinhardt, Ph.D. in Materials Science; from Thyssen. It is a pleasure to work with you all, and I hope this cooperation will not it disappointed me."

No one expected this female engineer to be so arrogant. German women are really tough. At this time, everyone was curious and wanted to see what this woman was capable of; they dared to say that. But since they can participate in this seminar, no one dares to take it lightly. Bao Zixuan doesn't care about anything, it's impossible to let you in if you don't have the ability.

Mia von Rehart continued: "Based on the technical requirements for this military vehicle, Thyssen and Krupp decided to use the K8 composite armor."

Composite armor is a heterogeneous tank armor composed of more than two layers of protective materials with different properties. The difference in physical properties between them interferes with the penetration of the incoming projectile, consumes its energy, and finally achieves the purpose of preventing the penetration of the projectile. This kind of armor is divided into three types: metal and metal composite armor, metal and non-metal composite armor, and spacer armor, all of which have strong comprehensive protection performance.

Composite armor has multiple layers, and armor-piercing projectiles or armor-piercing projectiles consume a certain amount of energy each time they penetrate one layer. Due to the different hardness of the materials of each layer, the core of the armor-piercing projectile or the metal jet of the armor-piercing projectile can be changed in direction, and even the core of the armor-piercing projectile can be broken. Therefore, the penetration resistance of composite armor is much higher than that of homogeneous armor. At the same weight per unit area of ​​the armor, composite armor is twice as resistant to armor-piercing projectiles as homogeneous steel armor.

The emergence of composite armor is a revolution in the history of tank protection technology. Its birth has led tanks to rely on new material technology instead of simply thickening armor to improve protection. To some extent, it also makes tanks from deadly anti-tank weapons. It is no exaggeration to say that composite armor saved the weapon of the tank.

Many people are still skeptical about being able to use composite armor. It has nothing to do with cognition, the main concern is that the body weight is too large.

There has always been disagreement about what materials to use. American engineers still hope to use traditional metal materials; special alloy materials with high strength and toughness. But German engineers insist on using composite armor materials, which they believe is an inevitable trend in the future development of military vehicles.

Special steel is not effective against attacks, and composite armor can perfectly solve the direct attack of bullets and small artillery shells.

David Bruce, the head of the assembly, asked directly: "Dr. Rehart, we have discussed it before. The cost of composite armor materials is high, the processing is complicated, and most importantly, the weight is too large. It is difficult to meet the US government's demand for new military vehicles. Ask, is the K8 composite armor any different."

We are all smart people, and people who dare to bring it up must have some confidence. No one was so stupid that they didn't see anything, so they directly questioned other people's scientific research materials.

Mia von Rehart: "The K8 armor is the latest new ceramic composite armor developed by Thyssen."

The ceramic composite armor is similar in structure to the cream sandwich biscuit. The panel layer is made of alloy steel with high hardness, the base layer is made of alloy steel with strong toughness, and the middle layer is composed of many ceramic balls. The gaps between the **** are filled with glass. Fiber reinforced resin.

When a menacing armor-piercing projectile passed through the layer of the "sandwich biscuit", the warhead had become dull and consumed a lot of energy. Then, the tougher ceramic ball in the middle layer decomposed and dissipated the main impact force of the warhead. Finally, when the armor-piercing projectile that lost a large part of its energy hit the high-toughness inner plate, it had no armor-piercing ability. This is the magic of "sandwich cookies".

It's incredible to hear everyone here, as a vehicle manufacturing engineer. Of course, ceramic composite armor is known, and many people have seen the British "Chopam" ceramic composite material. That's an armor-piercing projectile that can stop a 120mm cannon at a distance of 2,000 meters.

Due to the weight and thickness of ceramic composites, it is simply not suitable for use as an ordinary military vehicle. After all, the thickness of the tank is not comparable to that of ordinary vehicles.

Bao Zixuan: "Dr. Rehart, is there any difference between this K8 ceramic composite material and others!"

At this time, I don't want to ask my subordinates to ask, and many people don't dare to ask more. After all, asking questions constantly means ignorance. Neither want to expose their weaknesses in front of the boss, especially when there are outsiders around.

Mia von Rehart thinks there are things you don't know, didn't you always think of yourself as a genius! It is just right to take advantage of this opportunity to let Bao Zixuan see the ability and technical strength of German engineers.

Bao Zixuan is an absolute authority in terms of titanium alloys, while aluminum alloys are slightly worse; but basically they all understand, after all, these two materials are mainly used in the aviation field. As for other alloy materials, they are smeared, and they don't understand at all. After all, they are not graduates in related fields, and they have not had too much contact with them in previous lives.

Mia von Rehart: "The K8 ceramic composite material is improved on the basis of tank armor. Compared with the ceramic composite armor material used in traditional tanks; it is lighter in weight and thinner."

"Although the corresponding anti-strike capability is weaker, it can fully meet the technical requirements of the United States for new military vehicles."

"Only 2 cm thick K8 ceramic composite armor can resist the direct attack of 40 mm caliber artillery. Specifically, it is designed for the Soviet 40 rocket launcher, which can definitely increase the survivability of the crew on the battlefield."

Hearing this, Bao Zixuan felt that the Germans still put in some effort. The material has been developed with large-scale applications in mind and is very targeted.

The 40 rocket launcher is definitely famous. People always refer to the AK-47, RPG rocket launcher and 107mm rocket launcher as the three major artifacts of world guerrilla warfare. The RPG rocket launcher generally refers to the RPG-7 40mm rocket launcher produced by the Soviet Union.

As a classic weapon produced by the Soviet Union, the structural principle is very simple, and it is very suitable for large-scale due.

The power plant of the 40 rocket includes two parts: the tail tube propellant and the main engine. The rocket adopts a needle-type firing mechanism. The 6 small holes in the tail are the nozzle holes of the main engine. The rocket has an ignition hole at the lower part of the engine nozzle. Equipped with detonating charge, at the same time, there is a positioning tenon on the projectile body, and a positioning gap at the front port of the rocket launcher. When loading, insert the positioning tenon of the rocket into the positioning gap of the barrel body, and then use the striker of the firing mechanism to align ignition hole.

Bao Zixuan still had some concerns, so he asked directly: "Ceramic materials and metal materials have high hardness and low density. However, their tensile capacity is small, which means that armored ceramics cannot withstand large bending stress. Some special parts require How to solve it, please ask Dr. Rehart to give the answer."

Hearing this, Mia von Rehart thought, Bao Zixuan sees the problem very accurately. Although he did not come from learning basic materials, his knowledge is quite extensive. Fortunately, you have been prepared early, otherwise you will be embarrassed.

Mia von Rehart said with a smile: "Mr. Bao is very reasonable, ceramic materials do have problems in this regard But Thyssen has developed a tough backplane, the purpose of which is to Solve this problem. You can process K8 composite armor of any shape you want, so don’t worry about it.”

Since there is no problem with processing and the performance is so superior; then only the price is left. As long as the price is reasonable, there should be no problem with the car.

Bao Zixuan: "What about the cost of materials, it is difficult to promote it if the price is too high."

Good material means rarity, otherwise other manufacturers really have no way to survive. Although the United States has deep pockets, it is not so easy to fool. Taxpayers are watching them all the time, and they dare not do too much.

Regarding the cost of materials, Mia von Rehart has absolute confidence. K8 material is her leading research and development, just to replace ordinary alloy materials. The price is really not expensive, at least most companies can accept it.

Mia von Rehart: "The material cost is comparable to that of ordinary special alloys, and the cost of the two materials is within 10 points."

Hearing that Bao Zixuan is quite satisfied; at least the price is acceptable. Time is running out, and we can only trust the Germans at this time. With the level of rigor they treat technology, they shouldn't do anything fraudulent.