Siheyuan: I eat melons while doing scientific research

Chapter 1202: Team Building at the Institute of Research (5k)

At the same time, in Haijiao City, Tianya Island, several comrades were looking at some green plants in front of them with smiles on their faces.

"It's growing well. When the time is right, we can continue our work."

"Yeah, I didn't expect the information they gave was so accurate. I actually found this thing in this place."

"How much time can be saved at once, hahahaha."

"We found it in October. We have been working on it so far. The results seem to be of good quality and will be used in our next step without any problems."

Several comrades were discussing excitedly, and the plants in front of them seemed to be growing well and thriving.
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On January 1 of the new year, comrades from the Institute of Research and Development came to the Third Rolling Mill in a large lineup.

To be honest, if there was an enemy ambush with an IED here, our tactical missile research would be stagnant for at least 10 years. The lack of a large number of personnel is something that even Gao Zhendong can't fill.

However, nowadays, not to mention the enemy spies, even the Russians can't stay in the main factory.

To be honest, even Gao Zhendong himself was stunned when he saw this lineup.

What the hell is going on? The Institute of Research and Development is here to organize a team building, right? No, do I have to ask the Institute of Research and Development to reimburse the team building fee later?

Jokes aside, Gao Zhendong knew that they came here for team building and it must be important business.

There were so many people that even the reception room was not big enough, and the third branch factory even had to open a conference room just to accommodate all the people.

After everyone sat down, Gao Zhendong said with a smile: "So many comrades came today, they are not here to eat at our Third Factory, right? No matter how good Comrade He Yuzhu's cooking skills are, they can't be so attractive."

It's no wonder that Sha Zhu's fame has spread completely, not to mention the defense engineering system, the 17th and 12th Ministry of Machine Building, but even some comrades in other systems have heard of his name for a long time.

After all, steel is an absolutely scarce commodity these days. Even if everything is according to plan, there is still an endless stream of comrades coming to find ways and solutions, not to mention that there are many special varieties here that other factories do not have.

Whether or not one can eat "the dishes personally prepared by Chef He Yuzhu" is somewhat a topic of conversation or even a subject of comparison among these people. After all, it represents the position of the person they are receiving at the Third Rolling Mill.

Let me put it this way, when Shazhu retires, he can open a private restaurant and make a lot of money, and he can be selective about the guests he receives.

But these are all off topic. When the comrades from the Institute of Research heard Gao Zhendong's joke, they also laughed, but their laughter was somewhat awkward.

"It would be great to eat Master He's dishes, but this time we are here to ask for help." Vice President Zhou of the Institute of Guidance and Research said with a smile. If there is any chance, Master He's dishes cannot be missed, and this matter cannot be too polite.

There are too many people this time, and the situation on Gao Zhendong's side is also different. We need a leader to lead the team. Vice President Zhou is in charge of this matter.

Asking for help? Gao Zhendong knew that this was most likely the case, but the scene still aroused his curiosity.

"Help... So many research groups, are they all dealing with the same issue? Have they accumulated a lot of problems and want to discuss them together?" This is not surprising. It seems that the comrades in the Institute of Research are too lazy to run around for every matter, so it can be considered an efficient organizational method to gather together the issues that are not too urgent and discuss them together.

However, Vice President Zhou's answer made him feel amazing: "No, just one question."

Hiss~~~~~~
Gao Zhendong even sucked his teeth, this was not a simple matter!
It can stump multiple models at the same time, and so many people can't figure it out even with their combined brainstorming, so how big must this problem be?

Gao Zhendong remained calm, opened the system in his mind, and said with a smile: "It seems that this problem is very big. Let's talk about the specific situation first, and then we can discuss it together."

His calmness was seen by his comrades as a sign of confidence, and they all sighed inwardly that he must be a senior advisor.

This greatly boosted the comrades' confidence. Before coming, they had summarized and analyzed the instability problems of the three types of missiles overnight, and one comrade reported it to Gao Zhendong.

Gao Zhendong nodded as he listened, then asked about some details of the experiment and fell into deep thought.

To others, he seemed to be thinking, but in fact, he was just flipping through the system.

Just as the comrades from the Missile Research Institute summarized, this matter is most likely a problem with the missile's aerodynamics, but this is too detailed.

Let me put it this way, he has less exposure to missile aerodynamics than aircraft aerodynamics. After all, when he was a troll on the Internet, there were quite a few people who would use aircraft aerodynamics to troll against him, but there were only a few who would go so far as to use missile aerodynamics to troll against him.

Even though this incident may appear to be caused by pneumatic factors on the surface, there may be deeper reasons behind it.

Fortunately, Gao Zhendong had three more "National Destiny" hidden tasks giving him the opportunity to search the entire network. When Gao Zhendong was happily thinking about taking action, he suddenly remembered something.

Why use the entire network? Isn't that stupid?

Have you forgotten the "gift from home"? At the current price, 4 search opportunities can launch a limited full-network search.

Missile technology is indeed related to Qianshan, and it is the air defense missiles among tactical missiles. They are cheap and abundant, and can greatly make up for the high price of Jingqi-9. Jingqi-12 and Jingqi-22 are from Qianshan.

Gao Zhendong knew that the definition of "relevant technology" in "gift from hometown" was a bit broad, which meant that there were many bugs that could be exploited.

Just give it a try, you can afford the loss with only 4 search opportunities.

He did what he said, and then Gao Zhendong burst into laughter in the meeting room.

It really is!
Looking at the book that came out of the system, Gao Zhendong quickly opened it in his mind. It is better to sharpen your sword before the battle, even if it is quick.

But Gao Zhendong's laughter made other comrades feel uneasy. What did it mean? Was he laughing at us for not being able to solve such a simple problem, or was he so happy because he had found the direction of the problem?
No matter what the comrades were thinking, Gao Zhendong fell into "contemplation" again, which forced the comrades to be quiet again and accompany him in "thinking".

After a long while, Gao Zhendong finally spoke: "I roughly know the situation, I roughly understand the problem, and I should have some clues about the direction."

The last sentence made the comrades excited involuntarily.

Sure enough! It really works!

It is said that Chief Engineer Gao has high attainments in fluid mechanics, aerodynamic layout and other aspects, which is indeed true.

Without waiting for the comrades to finish their excitement, Gao Zhendong opened the discussion with a question: "Comrades, let's not discuss what your problem is. Let me ask you a question first, and please think about it."

Come on, come on, let's take a class.

The comrades opened their notebooks and prepared to take notes.

"Comrades, from the perspective of the missile's overall performance and aerodynamics, which indicator is the most core and can link all the relevant indicators together?"

Gao Zhendong's question stunned the comrades. There are so many indicators, which one? Gao Zhendong raised this question with the intention of delaying time. After all, he couldn't let everyone sit there in a daze with him. He first asked a question to make the comrades excited.

Length, diameter, center of mass, moment of inertia, thrust, speed, wingspan, weight…

From an overall and aerodynamic perspective, there are many indicators.

Seeing that Gao Zhendong's approach was relatively free this time, the comrades spoke one after another and proposed what they thought were the most core indicators. Gao Zhendong took this opportunity to quickly digest his gains.

But after much discussion, we still cannot find a decisive indicator that can affect all aspects of the missile.

However, during the discussion, everyone felt that they had a deeper understanding of some technologies, which can be regarded as a gain.

As for the fact that the discussion had no results, Gao Zhendong had expected it. After all, this thing had only just begun to enter people's vision and begin to be used, and the first equipment used was not missiles, but aircraft.

This is exactly the thing that Gao Zhendong proposed in aircraft development.

"Well, everyone has their own ideas and reasons. Of course, the conclusion is wrong." Gao Zhendong first praised his comrades, and then clearly stated that the conclusion was wrong. There can be no ambiguity on this issue. What is wrong is wrong.

"The most important indicator is static stability. In missiles, we define static stability as..."

The definition of static stability is a bit long and difficult to understand. It took the comrades some time and effort to fully understand what it is. But to put it simply, it is the relative position relationship between the aerodynamic focus and the center of mass.

To put it simply, if the aerodynamic focus is in front of the center of mass along the direction of the missile's travel, it is statically unstable. If it is behind, it is statically stable. The farther the distance, the greater the degree of stability or instability.

The comrades working on aircraft do understand some of it, especially those working on fighter jets. They have had a lot of exchanges with Gao Zhendong. However, the comrades working on missiles are relatively confused. It's not that they have not taken these things into consideration, but they have not been considered as a core indicator system.

"Advisor Gao, how does static stability affect so many aspects?" If you don't understand, you should ask.

Gao Zhendong smiled and said, "The center of mass is directly related to the weight, volume, and size of the missile, while the aerodynamic focus is directly related to all aerodynamic indicators. Isn't this connected? And there is a very important point. For different targets, we need different static stability options. In other words, this indicator determines the core performance of the missile, and in turn is related to all indicators of the overall design of the missile."

The comrades nodded one after another, saying they understood what I said.

At this point, Gao Zhendong pointed out their problem: "After analyzing your current problem, it is likely that this indicator was not fully considered when the missile was designed, resulting in insufficient consideration of the static stability changes of the missile during flight. The missile state exceeded the control range of the flight control system, and then..."

At this point, Gao Zhendong gave another example: "For example, in a close-range surface-to-air missile, as the solid booster with the largest charge burns, the center of mass changes rapidly, and then the flight control system fails to keep up, or the indicators designed by the flight control system do not match the missile status, which eventually leads to instability."

The comrade who was working on the short-range air-to-air missile was somewhat puzzled: "Advisor Gao, but during the combustion process, the missile's center of mass is moving forward. According to what you just said, the missile's stability is increasing. Why does it still cause the missile to become unstable?"

The questioner was Lin Lianwei, Gao Zhendong's old classmate. After he finished working on portable air defense missiles, he joined the research group of short-range radar and low-altitude missiles because of his experience in surface-to-air missiles. At this time, he also learned the art of "calling one's job title when working".

Gao Zhendong smiled and said: "Different static stability has different control torque requirements for the flight control system. If the two are not matched, instability may still occur if the consideration is not thorough. Let me give you another example. For a car traveling at a low speed, you can turn the steering wheel many times at once, but for a car traveling at a high speed, try it? Rollover, tire blowout, and half-axle breakage are all possible."

This example was very vivid and the comrades understood it immediately.

Static stability has high requirements for control torque. If it is still controlled according to the static instability torque, the requirement cannot be met at all, and then the control system may continue to increase the output, and then, it collapses!

The details may be different, but that's the principle.

They nodded and wrote down the results in their notebooks. One of them raised his hand and said, "Advisor Gao, I have a question that I cannot understand. Why did these problems not appear in the development of the previous batch of missiles, but are now erupting in a cluster?"

This question is also very important to comrades, and it is one of the key points that they find difficult to find logical consistency with after thinking about it.

Gao Zhendong said: "Because your previous batch of models almost all had reference objects. Regardless of whether these reference objects considered this problem, from the perspective of engineering practice, this problem has been solved, and your previous batch of models inherited this achievement."

The comrades thought about what Gao Zhendong said, and thought, "Huh? It seems to be the case."

The infrared air-to-air missile, Thunderbolt-1, is based on Citigroup's Sidewinder.

The medium-range surface-to-air missile is based on the S-75's two-stage body. In order to enhance control capabilities, comrades even creatively changed the wing scheme to the ten-X scheme.

The medium-range air-to-air missile was based on the sparrow picked up from Jiaozhi. In this regard, we really have to thank the Citigroup guys.

They mainly modified the engine and guidance system, which just happened to avoid this problem.

Well, this time we found the reason. The issue of imitation was discussed by everyone in the Research Institute, but there was a lack of a core point to connect "imitation" and "nothing happened", and in the end it was left unresolved.

"Then why doesn't the Changying-62 portable air defense missile have this problem? And why doesn't the Zhengxian-62 solid anti-ship missile have this problem?" The person who raised this question was Lin Lianwei, and he participated in the development of the Changying-62, and Su Weihua participated in the development of the Zhengxian-62. It's impossible that this problem won't happen just because we are classmates, right?

As for the Red Sword-61 that Gao Zhendong personally developed, he did not mention it. The reason why there was no problem was that it was not a louse on a bald head - it was obvious.

Gao Zhendong laughed: "You are lucky, hahaha. Not considering this problem does not mean that there will be problems, otherwise wouldn't all the early missiles be unstable?" You know what, formulas are quick to solve problems.

All the comrades laughed, including Lin Lianwei.

This is true. Sometimes when working on a project, luck is really important. Of course, if you only rely on luck, you will soon stagnate.

"Well, I understand. The short-range air-to-air missile has the highest level of innovation, so the problems it may cause are also the most serious." Compared to the others, the short-range air-to-air missile is new, brand new, and indisputably new.

"That makes sense. The changes to the telemetry of ultra-long-range air-to-air missiles are relatively minor, so the problem is relatively better. As for the improvements to medium-range air-to-air missiles, the problem is even smaller."

"I think it's more than that. The booster of this short-range air-to-air missile is large, so the center of mass changes greatly during combustion, which has a great impact on the results."

"Another reason is that this missile has a lift-type layout, with the control rudder in the front, which has a high utilization rate of overload, which sometimes amplifies this problem."

It’s like sailing on the sea. When there is no lighthouse to guide the way, the ship is wandering around aimlessly. But once there is a clear direction, ships from all directions can find the way much faster.

Lin Lianwei is not polite at all. Although he calls the shots at work, he is not polite at all when it comes to taking advantage of others.

"Advisor Gao, how do we solve this problem with our missile? It's not easy to determine the current solution. We are under a lot of pressure to make changes."

The words sounded so pitiful that I was almost crying.

However, from a practical point of view, their current overall plan was indeed hard-won, mainly because the price of this missile was strictly restricted by Gao Zhendong during the planning.

"I asked you just now, your plan did not adopt closed-loop flight control, right?" Gao Zhendong couldn't just stand by and watch him die, looking at his old classmate crying like this.

If you want to completely solve this problem, there is a basic requirement of "one force overcomes ten skills", that is, directly using closed-loop flight control, and then coordinating with other measures and designs, the problem can be solved very well.

However, Lin Lianwei and his team are not covered by this method: "Yes, due to cost constraints, we can only simplify the subsystems as much as possible while meeting the requirements. That's why I said that the current overall configuration of our missile is not easy to come by."

Due to the cost requirements, you can forget about using advanced control computers.

There was a hint of "Why are the costs so strict? Don't you have any idea about it?" in Lin Lianwei's words, which made Gao Zhendong almost laugh.

Speaking of which, this guy is unlucky. The two projects he was responsible for as the subsystem leader were both low-cost projects. The cost-cutting almost killed him.

(End of this chapter)