Chapter 247 This bullet is decided

The user representative thought it made sense.

"Director Gao, you are indeed a veteran of the battlefield. Your considerations for our operations are really thoughtful. Indeed, we will encounter a lot of such situations during street fighting."

The people at the Long Sword Factory heard this and learned it.

Engineer Luo shook his head: "Haha, Director Gao, we really can't compare with you in this regard. I really can't think of this matter."

Gao Zhendong smiled and said, "Thank you very much. This soft launch is to solve this problem. First, a small thrust is used to push the missile out, and then when it reaches a safe distance, the high-thrust engine is started to speed up. In this way, there will basically be no such concern."

When the users heard this, they clapped their hands and cheered.

The people at Changjian Factory had only one concern: "Director Gao, I'm afraid that the production of the dual-thrust engine will be difficult for our factory staff."

This statement actually has two meanings. It is difficult for us to produce, and it may not be easy for you, Director Gao, to design it. After all, this is your first time working on a rocket engine, and even if you are a genius, you may not be able to achieve success overnight.

Gao Zhendong smiled and said, "It doesn't matter. I considered using dual thrust mainly because I wanted to make the missile structure simpler. In fact, I have a backup plan."

He said while drawing: "If there are technical or cost difficulties, then we can install a small-thrust takeoff engine externally and discard it after launch, or use an external installation method that does not affect the aerodynamic shape and does not need to be discarded. These methods are much easier than dual thrust."

Upon hearing this, Engineer Luo couldn't help but admire Gao Zhendong's thorough considerations. While he was trying his best to climb towards the optimal structure and better technology, he also remembered to leave a backup plan. With Gao Zhendong's explanation, everyone no longer had any doubts.

Soft launch must be done. As for what method to use, it depends on the development of technology. In short, the technical and tactical benefits are very high and the technical risks are very low. It’s worth it!
Gao Zhendong continued to draw. Although the scale of today's meeting was not large, its purpose was to explain the technology and to finalize everything that could be finalized.

Because the funds for this missile come from the Changjian Machinery Factory, there is a lot more freedom in the formulation of many processes and procedures, as well as technical and tactical indicators.

To a certain extent, the words of the user representatives are just suggestions. The decision-making power lies with the Changjian Factory, and ultimately with Gao Zhendong, because he is the one who decides the extent to which the technology can be achieved.

What Gao Zhendong drew at this time was a block diagram of the principles of infrared angle measurement guidance.

To put it simply, an infrared goniometer is a special infrared light source installed at the tail of the missile. The infrared goniometer then captures this infrared light source and automatically outputs correction instructions based on the deviation between the infrared light source and the aiming line, causing the missile to automatically approach and coincide with the aiming line as much as possible.

It should be noted here that the output of the correction command does not require digital calculation, but relies on an analog circuit similar to a comparator to directly output the control command based on the degree of deviation between the light source and the aiming line. Therefore, there is no need for advanced products such as an onboard computer.

As for the use of special infrared light sources, it is mainly to distinguish them from other light sources on the battlefield.

Gao Zhendong explained as he drew. When Engineer Luo saw that he had drawn two sets of infrared angle measuring instruments on the schematic diagram, he was a little puzzled. He thought that this was a waste.

"Director Gao, I understand the principle of your infrared goniometer. It is indeed feasible with existing technology. It is very clever. But why do you need two sets of infrared goniometers? Can't they be integrated into one?"

Gao Zhendong nodded: "It can be integrated, but the cost is too high."

He pointed to two sets of infrared goniometers and added a note "wide angle" and "telephoto" below each.

In fact, it is the difference between a large field of view with low magnification and a small field of view with high magnification.

He explained: "Because we need to separate fire control, many times the missile is far away from the aiming line axis right after it is launched, and the high-magnification goniometer used for precise angle measurement guidance often cannot capture the missile's trace due to its small field of view, making it impossible to guide it."

Everyone understands what he means. Anyone who has used high-power telescopes knows that high magnification and large field of view are often not achieved at the same time. For those that can achieve both, the size, weight and cost are unacceptable.

Gao Zhendong pointed to the goniometer with a large field of view and said, "So my idea is to use a goniometer with a large field of view and low magnification to capture the missile at the beginning of the launch, guide the missile into the field of view of the goniometer with a small field of view, and then let the goniometer with a small field of view and high magnification take over for precise guidance."

Everyone understood. Well, it was a relay race. What’s more, Director Gao’s method was simple and crude, and it really solved the problem.

However, a technician from the Changjian Factory also raised his own questions. Anyway, they positioned themselves as coming here to learn, and there was nothing to be embarrassed about.

"Director Gao, why don't you use an adjustable infrared angle measuring device to cover both working conditions? Wouldn't that be more convenient?"

Gao Zhendong shook his head. "The cost is too high. First, a set of optical devices with wide-range focusing is a bit beyond our current processing capabilities. The yield rate is low and the price is high. Second, if this is the case, manual adjustment is actually unusable. Then we must add an automatic zoom control system."

"This is also very difficult for us now. The price of the whole system is actually much more expensive than two sets of goniometers, and it is not necessarily much lighter. The reliability, usability, maintainability, ease of use and cost-effectiveness are very poor."

This principle is actually a bit like Gao Zhendong's previous life. In the photography circle, there is a saying that "a cow is more variable than a dog is more fixed". For specific requirements, with the same cost, zoom is not as good as fixed focus. For example, when taking portraits, which photographer doesn't have a 50mm large aperture fixed focus lens? Let's stop here. "XX ruins your life, photography makes you poor for three generations", isn't it a SLR that makes you poor for three generations? SLR alone is nothing, add the shift and rangefinder, eh, I won't say more.

When everyone heard this, they all admired Director Gao's precise grasp of technology. If they thought about it carefully, every word he said made sense.

Especially the user representative: "Director Gao, can you repeat the characteristics you just mentioned? I need to write them down. Those words are useful for all equipment."

Gao Zhendong repeated a few words again, and everyone hurriedly took notes, with an expression of "I got it, I got it" on their faces.

As for the guidance system, everyone fully recognized Gao Zhendong's plan and route, and it was like a feeling of happiness that food was being fed into their mouths.

Gao Zhendong talked about the last subsystem, the warhead.

"Regarding the warhead, we will leave it to the comrades at the Changjian Factory. We just need to determine the interface between the warhead section and the power control section. At this stage, this interface is just a simple mechanical connector. There is no need for any signal exchange between the warhead section and the power control section because the fuze is inside the warhead section."

Director Gao is indeed an extreme person. When the need is complicated, he does not hesitate and even installs an extra set of goniometers to ensure technical and tactical performance. However, when the need is not necessary, he can solve the problem with a few screws.

Speaking of this, Mr. Luo from the Changjian Factory is no longer sleepy: "Well, this thing, from design to manufacturing, is handed over to us, haha, otherwise it always feels like we have done nothing, it's embarrassing."

Everybody burst into laughter. After Gao Zhendong explained the whole system in detail, everyone felt that this missile had a very bright future.

It’s not a small improvement, but a great improvement, and it’s getting better and better.

Gao Zhendong added: "But I have a suggestion for the combat department."

Mr. Luo said seriously: "Well, Director Gao, please go ahead."

He now has full confidence in Gao Zhendong, and this comrade will definitely not do anything without a purpose.

"The armor-piercing warhead has an optimal detonation height, referred to as the explosion height, right?"

General Luo understood the meaning of the song: "Yes, but this explosion point is generally far beyond the front end of the warhead fairing. If the fuze is placed at this position, the length of the entire projectile will be unnecessarily extended."

Gao Zhendong smiled and said, "We don't need to extend the entire projectile, we can just extend the fuse. We can put a long pole out and put the fuse there. We can call it a high-explosive stick."

"If it's more flexible, the high-explosion rod can be made telescopic and adjustable. Anyway, the shaped charge warhead is concave and hollow, so it can accommodate it. In this way, the length of the missile will not change much."

Mr. Luo drew a picture himself and laughed: "Director Gao's suggestion is good. By using the structure of the armor-piercing warhead, the problem of blast height control is solved without changing the length of the warhead too much. Haha."

After saying that, he turned around and said, "Director Gao, we will definitely give full consideration to this suggestion."

At this point in the meeting, basically all the combat technical indicators and technical routes of this individual anti-tank missile have been determined.

The next work has nothing to do with the users for the time being. They mainly provide field test resources and cooperation. The main work will be completed by Gao Zhendong and Changjian Factory.

Gao Zhendong said: "I will first test-produce the rocket engine in a short time, and the wire pay-off mechanism will be handed over to the comrades at the Changjian Factory. As for the wire, you can first imitate the SS.11. If there are any problems, come to me to solve them."

After the guidance method of SS.11 was improved, the flight speed reached 220m/s. It is worth imitating and brainstorming. I just don’t know whether they also improved the wires when they improved the guidance method.

The comrades at the Changjian Factory had no objection to this. The more work they undertook, the happier they were: "Well, at the same time, we will also get the warhead out as soon as possible, and strive to fire a batch of hand-controlled full-range test rounds within six to nine months, and at the same time determine the indicators such as range and armor-piercing power."

Gao Zhendong nodded and said, "I will carry out the design of infrared angle measurement guidance while you are firing full-range missiles and conducting related tests. As long as the previous things are done, we can temporarily reduce the speed and use manual control. In fact, it is already better than SS.11."

The user representative looked at the results and was very satisfied: "Well, this bullet is finalized! Comrades, if this bullet is really developed in this way, it will be much more advanced than the Gallic SS.11."

It is lighter and smaller, but guarantees the same power and range, flies faster and hits more accurately, is more convenient to use, and has a wide range of applications. The representatives of the users are a little worried that the comrades who imitate the SS.11 will be embarrassed.

The people at the Changjian Factory didn't have this worry. They were probably thinking, "Thank you, old man, for leaving us the rocket!!"

(End of this chapter)