Chapter 341 Missiles and Tubes Are Built

"The factory will give priority to these team leaders in future transfers and promotions."

Director Zhang's words were all true, including what he said earlier about strengthening security patrol forces. The Third Rolling Mill is so large, with so many people, a variety of outsiders, and many corners. What we are doing now is increasingly important. All of this is true.

In this sentence, it goes without saying that one can be promoted to a cadre, or transferred from other sequences to the cadre sequence.

This was an extremely great temptation for Liu Haizhong. It must be said that Deputy Director Li had an excellent eye for people like Liu Haizhong. He could trap him firmly with just any legitimate thing.

What's wrong with just taking care of two people? I'm in the workshop, and even if I'm an experienced worker, who else will listen to me except my apprentice? Are these two people not human beings?
Besides, this is just the beginning. Once I change my job and move up, will I still be worried that I won’t have enough people to manage?
When it comes to criticism or self-criticism, Lao Liu is not good at it, but he knows how to comfort and comfort himself, very good!
"Director Zhang, I am willing to pass on my experience to the young people. This is what I have always wanted to do."

Director Zhang smiled and said, "Well, that's fine. I know that you old comrades have high consciousness. Now, please sign your monogram here. The Security Department will handle the rest of the formalities."

Walking out of the security department, Liu Haizhong was in a good mood. Although he had to devote all his time to it without any special benefits and had to patrol in the scorching summer or the freezing cold wind with his old legs that had been broken twice, the future was bright and positive.

On the third day, Gao Zhendong, who came to work, saw Liu Haizhong, who was wearing a red armband, yawning and patrolling in the corners of the factory with two young men. The expression on his face was really impressive. It would have been even better if he hadn't looked so tired.

Old Li is quite quick, Gao Zhendong thought.

When I arrived at the office, the phone rang. It was Mr. Luo from the Changjian Factory.

"Director Gao, the solid propellant you made has been completed."

Mr. Luo didn't know about the third factory, so he still called it by the old name.

Gao Zhendong was very happy to hear that. He was still thinking about this only son who was left after the drastic measures taken by the Defense Work Committee.

"Have you taken the test? How is the result?"

What he is most concerned about now is this, as it is related to the modification amount of the engine of his anti-tank missiles and tubes.

"We have done it. The overall situation is not much different from your estimate. As for the specific data, I have asked our comrades in the confidential office to send you the test report. I think you will receive it soon."

Now everyone is used to this method, which is convenient and fast.

Gao Zhendong praised it repeatedly, which made him feel relieved. The difference was not big, so there was no need to make major changes.

"Director Gao, your propellant is incredible. It has a 10% higher specific impulse than similar propellants we have now."

This is normal. Even after 30 years, solid propellant is still one of the stubborn problems that plague military equipment. Our missiles are a bit thicker than those of the Americans at the same range.

Therefore, there is no doubt that the original version, which was derived from the X12, a single-soldier anti-tank missile of the same period of the Citigroup, is better than the existing ones.

"Haha, that's good. This way, the range of our individual anti-tank missiles will be more guaranteed."

The two talked for a few words, agreed on the next work direction and milestones, and then hung up the phone.

Not long after, a comrade from the confidential office came over and handed a confidential document to Gao Zhendong.

When I opened it, it was the test report that Mr. Luo had just mentioned.

The explosive heat of 4200kj/kg, specific impulse of 2200Ns/kg, and burning rate of 7.12~17mm/s at 20MP are all in line with my expectations. Although it is a little lower than the original data, this difference is not a big problem for the design and basically does not need to be changed.

After reading it, Gao Zhendong called Mr. Luo.

"Director Gao, have you checked it? Can we process the engine now?" Mr. Luo was very enthusiastic.

Gao Zhendong smiled and said, "I've seen it. Your workmanship is very good. It is very consistent with my expectations. There is no need to modify the engine. Just process it. Process both engines."

The two engines refer to the engines of the individual anti-tank missile and the individual disposable rocket launcher.

As for the engine of the anti-tank missile, Gao Zhendong uses a front and rear tandem dual-thrust engine. The rear end uses internal and external propellant columns but the amount is small. The explosive thrust is large but the combustion is fast and the burning time is short. It is responsible for accelerating the missile from low speed to high speed in a short time.

The end-burning charge used for the front-end charge has less thrust and a slower burning speed, which can provide thrust for the missile to maintain a higher speed for a long time. The disadvantage of the end-burning charge is that the center of gravity changes dramatically during the combustion process. Fortunately, on this missile, the rocket engine does not occupy a large weight and volume, and is located in the middle of the missile body, so this effect can be basically ignored.

In order to achieve a soft launch, they originally wanted to add a stage of thrust to push the missile from a stationary position to a certain distance away from the launch pad. Only the minimum thrust would be needed. However, in this case, the loading of the propellant would be extremely complicated, and there would be certain difficulties based on existing technology. Therefore, Gao Zhendong decided to add a small external booster to solve the problem.

The engine of a single-soldier rocket launcher is much simpler, with multiple tubes of internal and external combustion propellant, reduced-surface combustion, and free loading, trying to make the rocket burn completely within the length of the launch tube. This is also the route taken by the 89 tube.

As for why we do not use the telescopic launch tube of the Citigroup M72 to increase the length of the launch tube in the firing state, it is mainly because there is a step inside the telescopic launch tube, which will greatly affect the accuracy of the rocket. The Citigroup's technology can solve this problem, but the country may not have this capability at this time. Not to mention now, even twenty years later, it will still have an impact.

The six folding tail wings on the outside of the engine are designed to minimize the effect of windage so that no windage correction is required within the effective range.

In addition, before there was any news about the ABS launch tube and optical plastic from General Manager Xiang, Gao Zhendong also commissioned the Changjian Factory to process a batch of 80mm steel tubes and mechanical sights for use in testing before the plastic launch tube was successfully developed.

As for the drawings of the tube warhead, they had already been sent to the Changjian Factory. The existing propellant of the anti-tank missile would be used, and the fuse and connection with the engine would be solved by the Changjian Factory.

Mr. Luo was very excited to hear Gao Zhendong's affirmative answer. The new missile is taking shape step by step, and from the current status, at least its range and speed indicators should be very good. As for the power, it depends on the capabilities of his own factory.

"Okay, Director Gao, I will organize the trial production right away. We are all ready, just waiting for your order. We have also obtained enough small gyroscopes used in missiles. Don't worry, if everything goes well, we will be able to test the full-range telemetry missile soon."

This was copied by Gao Zhendong from the Russians' "Baby", and is similar to the Chijian-73.

An inertial platform is made of a small gyroscope. However, this inertial platform does not care about the flight distance of the missile. Its function is not for inertial navigation, but to collect the flight posture of the missile and control the deflection of the missile at the appropriate time in conjunction with the control signal transmitted by the wire.

Because the gas control surfaces of the "Baby" missile are not always moving. It has four engine nozzles, but only one pair of nozzles has gas control surfaces, which means it only has a control channel in one direction.

According to legend, this thing utilizes the rolling of the missile and adopts a very clever control method. When the pair of gas rudders roll to the horizontal direction, the gas rudders perform vertical deflection control. When the pair of gas rudders roll to the vertical direction, the gas rudders perform horizontal deflection control.

Although it looks unreliable, this thing is really accurate. It's just that the flight trajectory looks a bit weird. The advantage is that the control system is simplified and the cost is reduced.

As for how the missile knows whether it is horizontal or vertical, this depends on the gyroscope.

Moreover, this gyroscope does not move before launch, and its activation method seems very crude to people in the future.

Just like a yo-yo, the cable is activated. One end of the cable will be fixed on the launch box before launch, and the cable will be pulled by the thrust of the missile to take off.

I have to say that the Russians are really good at solving practical engineering problems. Don’t worry about whether their methods are rustic or not, they can really solve practical problems.

After hanging up the phone, Gao Zhendong focused his attention back on his work.
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Somewhere in Beijing, a scientist was looking at a document sent by the National Defense Committee with great interest.

The National Defense Committee is going to carry out a training called "Equipment Acceleration Test" recently. Although this scientist does not need to participate in this training, his students still keenly discovered some interesting things in the notice issued by the National Defense Committee.

So the student contacted the Defense Work Committee and successfully obtained the dozens of pages of training materials before the training started.

When the student took a look at the materials, he was surprised to find that they were similar to part of his teacher's research in a certain branch, so he immediately brought the materials to find the scientist.

The scientist read the material carefully with great interest, nodding as he read: "Well, interesting. Even if the author of this material has not studied control theory, he must be someone in this industry, or even a leader in the industry."

The student smiled and said, "Teacher, I asked around and found out that you have seen other works of this author before."

Others may not be able to find out the information, but it is naturally no problem for his students. They just need to ask the author of a book, nothing more.

"Oh? Which one?" Scientists have read so many books, so naturally they have to ask.

"Project Management System! I have attended training on it. The author is a very young scientific researcher."

The scientist now remembered that he had given a very good review of the book at that time.

"Good, very good. It seems that the author has not stopped his steps and has been working hard to learn and think, and has incorporated the results into his work. Good! Good!"

(End of this chapter)