Chapter 506: The Tail of the Anti-Tank Missile

Director Yan happily took the list and went to purchase goods, while Gao Zhendong put this matter aside and started to deal with technical work.

The Northeastern Institute of Optics has already completed the modification of the optical system and sent it over. A person also came to assist in the installation and debugging of the optical system.

The experienced workers in the factory temporarily put aside the work of further improving the positioning accuracy of the worktable and started assembling the photolithography machine.

It is called assembly, but in fact a more appropriate term should be trial installation. Gao Zhendong only put forward the installation requirements and main structure. The specific details have to be explored and modified bit by bit by the old masters, so the progress is relatively slow.

Fortunately, the lithography machine at that time was actually a relatively simple thing, so simple that if people in the relevant profession saw it in the future, they would never associate it with the lithography machine.

Gao Zhendong's lithography machine is simpler, using manual film feeding, manual alignment, and automatic exposure.

Although it is simple, it still takes time, especially when many small parts, components, and connectors need to be adjusted by hand. There are a large number of details that need to be modified and confirmed by Gao Zhendong, and there is no rush.

Gao Zhendong was leading his comrades from the Third Factory to work hard and smartly when someone came to look for him. To be exact, someone had wanted to look for him for a while but had been waiting for him to come to work.

Mr. Luo from Changjian Machinery Factory is here.

As soon as Mr. Luo came over, he brought good news. Although it was expected, the dust has settled this time, which makes people feel relieved.

——The disposable rocket launcher was officially finalized.

After field use by multiple locations and units, as well as formal finalization tests conducted simultaneously at the Syracuse Experimental Center, the disposable rocket launcher was finally named the "1961 Anti-Tank Rocket Launcher" and officially put into service. According to convention, it is abbreviated as "61 Fire".

A total of about 400 rockets were fired during the formal test at Syracuse. The test involved a wide range of content and took into account various situations during use.

At the same time, in accordance with the latest requirements of the Defense Work Committee for equipment finalization, Syracuse also carried out accelerated equipment test evaluation on disposable rocket launchers. The test showed that the 60 anti-tank rocket launcher using the Black Mix-1961 fully meets the reliability and storability requirements within the design life cycle.

"Boss Gao, our factory has already started to increase equipment and manpower and start to produce 61 fire at full capacity."

Changjian Machinery Factory originally made fuses. If it wanted to produce 61 fire, it needed to update a batch of equipment.

"It has been handed over to you? Then what about the comrades who originally produced 40 fire?" Gao Zhendong was a little surprised.

In this timeline, there is no "New 40 Fire" now, so the old 40 Fire is simply referred to as 40 Fire. Interestingly, the abbreviation of 40 Fire is derived from the caliber, while the abbreviation of 61 Fire is derived from the year.

Mr. Luo smiled and said, "I heard that they will continue production, and it will not affect either side. Theirs takes up a position, and ours does not, so for the time being, production and distribution will remain the same. And I heard that they still have foreign aid missions to complete."

After hearing what he said, Gao Zhendong understood that the comrades in the army were probably a little scared of the power of the 61mm fire, and judging from the current situation of the struggle, the 40mm fire was completely sufficient, so the 61mm fire had to be used on their own people first.

This is definitely not the monkey version of foreign aid. The power of foreign aid 40 fire is exactly the same as the self-use 40 fire. Where is the monkey? It doesn't exist.

Mr. Luo was smiling happily, applauding his factory for seizing the opportunity last year, making a firm decision, fighting a desperate battle, grabbing the slight chance given by Mr. Gao, and decisively participating in the research of individual anti-tank missiles.

Let’s not talk about the anti-tank missiles that are about to be successful. Even what was initially thought to be just the scraps of a prototype warhead has now developed into a formal equipment with huge power and excellent performance.

Another reason for his visit today was precisely for this individual anti-tank missile.

"Boss Gao, I came here today for another reason, besides bringing you this good news, which is about individual anti-tank missiles."

Gao Zhendong was not surprised. The anti-tank missile had been developed for some time, and they had their own warhead, guidance system, and rocket engine as a foundation. With the efforts and experience of the comrades at the Changjian Factory, it was almost time for it to bear fruit.

"Anti-tank missiles? I remember you were dealing with the problem of the small gyroscope at the tail of the missile some time ago? How is the situation?"

"The problem with the small gyroscope has been basically solved. The 11th Machine Department provided improved processing equipment, and the processing accuracy has been improved. Now the situation is good. This time, we came for the guidance system."

There is progress again, not bad, Gao Zhendong said with a smile: "Tell me about it." "During the experiment, we found a problem, which is not fatal, but will have a certain impact on the hit rate, so we want to see if we can further improve and optimize it. If the technology cannot support it for the time being, or the cost is too high, then forget it, after all, the current hit rate can already meet the requirements."

This is a common problem among technical personnel, or stubbornness. Although the target has been reached, I seem to have found a way to improve it a little bit, so why not give it a try? I will not give up until I give it a try.

However, Mr. Luo was still very rational. In addition to the exceptional condition that the technology could not support it, he also clearly added the condition that the cost was too high.

"What problems did you find?"

"That's right. Although the infrared tracer at the tail of the missile is designed to be staggered with the engine nozzle in the middle of the missile body and to use a different light color from the engine jet, the jet of engine gas is diffused and light itself is scattered. The flame of the engine at work far outshines the brightness of the tracer. As a result, the light and infrared rays emitted by the engine will interfere with the infrared goniometer, causing a certain degree of inaccuracy, and the closer the distance, the more obvious it is."

Gao Zhendong thought about it and realized that this was indeed a problem.

If the human eye can use the tracer tube to judge the deviation between the missile position and the target, no matter how bright the fire is, the human eye can basically judge the accurate missile position through imagination. However, the automatic capture infrared goniometer will be completely useless when the conditions are not ideal or the device performance is insufficient.

Although the accuracy of this system in the human brain is not high, it is very powerful in terms of practicality. Nowadays, these ancient-level automatic control systems are really no match for the human brain because the sensors, algorithms, computing cores, or even the lack of computing cores are not perfect.

As for the reason why the closer the distance, the less accurate it is, it is very obvious. The closer the distance, the greater the engine fireworks, and the greater the interference. The farther the distance, the smaller the fireworks, and even if the engine burns out and stops working, then there will be no problem.

The engine sings: I am who I am, a firework of different colors~~~~~
This is the truth, but to others, the closer it is, the less accurate it is. This is a joke.

However, this matter did not pose a problem for Gao Zhendong, as he had the goods in hand.

"Well, this problem is not difficult to solve. When you go back, take an infrared spectrum of the engine flame and see where its infrared spectrum is weakest."

Mr. Luo followed Gao Zhendong's train of thought and thought: "Which section is the weakest? The weakest... the weakest... Mr. Gao, I understand. You want to put the infrared characteristic wavelength of the infrared tracer tube at the section where the engine flame is the weakest? This way, you can avoid interference to a large extent?"

Different wavelengths of infrared light may look similar, but they are different in nature. Just like the 2st century Samba National Football Team and the East China National Football Team, both were scored 7 goals by the S Axis Powers, but can we say that they are on the same level? Obviously not.

This is why Mr. Luo likes to find Gao Zhendong. In addition to always being able to solve problems, he can also get a lot of inspiration.

Gao Zhendong nodded: "Yes, that's what I mean. Use the characteristic wavelength to distinguish the engine flame and the infrared tracer tube. In this way, the infrared goniometer can also figure out who is who without the need for human brain."

Mr. Luo was overjoyed: "Okay, this is a good idea. It's not technically difficult and won't increase costs too much..."

As he was talking, he discovered a new problem: "But Mr. Gao, how can the infrared goniometer capture this characteristic wavelength? It doesn't have this capability."

Gao Zhendong said: "First, find out the characteristic wavelength. Do you remember the mercury cadmium telluride infrared photosensitive material?"

"Well, remember, this is a good thing. If the thermal imager you made wasn't too expensive, I would have wanted to install it on the sight, but..." Speaking of this, Mr. Luo was very excited and looked longing for it.

Gao Zhendong smiled and said, "Thermal imagers are too expensive, but it is still possible to use mercury cadmium telluride to make infrared goniometers. It is not that expensive, and the goniometer can be reused, so there is no big problem. Moreover, mercury cadmium telluride has an advantage, that is, its sensitive band can be adjusted by adjusting the components."

Why didn't Gao Zhendong choose indium antimonide, which is more commonly used in third-generation air-to-air missiles, when he first developed a new generation of infrared photosensitive materials? This is the reason. Mercury cadmium telluride is flexible and highly adaptable. When resources are limited and not all available, mercury cadmium telluride is better than indium antimonide.

Who would you choose between Dark Phoenix and Mystique? Gao Zhendong chose Mystique.

When Mr. Luo heard this, he asked, "Is there such a benefit? That's fine. I've already raised the original 70% hit rate!"
This hit rate is not bad. The original hit rate of the Red Sword-73 was this one at the beginning. The main reason is that this hit rate is negatively correlated with the range. This is very difficult to maintain and goes against common sense. If you talk about it to others, you will be laughed at.

Mr. Luo closed his notebook and said, "Mr. Gao, I understand! I will go back and organize some people to make a spectrum for the missile's engine flame!"

As long as they determine the required sensitive band, all that remains is for Gao Zhendong to notify 1761 to adjust the material components.

(End of this chapter)