Learning Demon Cultivation System

"Why is it impossible?" Chen Hongbing immediately protected Lin Yujing, "It would be nice if we were quiet, who would Li Zheng help her if he didn't help her?"

"Why are you here again..." Shen Tinglan wanted to cry but had no tears.

"Okay, let me be fair." Zhao Zhenhua raised his hand and said, "Now is not the time to talk about your children's personal affairs. After Huang Er takes off into the sky one day, I will personally be your wedding witness. Isn't that interesting enough?"

"This is good!" Chen Hongbing applauded immediately, "It's settled!"

"You just want me to go..." Shen Tinglan picked up the computer and jumped out.

"Don't talk, don't talk..." Chen Hongbing quickly blocked the door, and said to Zhao Zhenhua, "Secretary, tell me."

"Yeah." Zhao Zhenhua also retracted his laughing attitude, leaned on Li Zheng's shoulder and said seriously, "We have probably seen your achievements, and it is a big breakthrough wherever we put it, not only the work in front of us, In the future fault diagnosis and analysis, it is also very promising. I have also talked with Mingyue. If you cut down the data of YF-87 and only talk about methods and models, you will definitely be able to publish an article that is very important and profound in aerospace data analysis. The papers will play a guiding role in the future."

"This time, just the two of you and Liu Rui will cooperate, and it will be fine if you can make it before you leave."

"The Institute will evaluate and recommend papers for awards. According to the quality of finished papers, I may personally recommend them to core journals."

"Don't refuse this time. The results this time will not only promote data analysis in the aerospace field, but also prove your personal ability. It will be much smoother when you enter university in the future."

"In addition, no matter whether you agree or not, after the internship period expires, no matter whether I am present or not, the hospital will definitely issue a formal letter of appointment. I hope that you will serve as special consultants on a part-time basis."

"You don't really have to put in too much energy. This title and work experience will make your future smoother, especially when evaluating titles. These jobs are included in work experience, which can help you get into the evaluation many years earlier. Senior title."

"You may deserve more than that."

"If I'm still around in the future, I'll find a way to help you get more things."

"But if I'm not around, those are guaranteed."

"Okay, Li Zheng, don't be so surprised. Even with this progress, we are still far from keeping Huang Er."

Zhao Zhenhua said, and sat on the sofa: "I have personally called the old principal of Harbin Institute of Technology, and there will be help to advance, and the subsequent work will also rely on the strength of the academic community to increase investment in engineering calculations."

After speaking, he turned to Li Zheng and nodded.

"This group, you are in charge."

Li Zheng was taken aback.

Zhu Mingyue next to him smiled and said, "Tell me about you. You became the team leader at the age of 18. How can we old aerospace companies live?"

"I have to say something for Li Zheng." Shen Tinglan said seriously, "His learning ability is really too strong, and he has specialized in our weak areas according to his own strengths, and at the same time, basic aerospace engineering has not been left behind. , Even if I look at the age of 35, I can't find a few people in the system who can achieve this comprehensive level."

"You're in a hurry, you're in a hurry." Chen Hongbing laughed from the sidelines, "Mingyue didn't question it, but he was praising my uncle, you're protecting me too much."

"Yes..." Zhu Mingyue said awkwardly, "Li Zheng's achievements have been seen by all, and he deserves to be the project leader of the cooperation with Harbin Institute of Technology. Don't worry, Mr. Shen, no one will have any objections."

"Ah, this..." Shen Tinglan blushed, only to realize that she had indeed overprotected herself, "Stop talking,, stop talking..."

Zhu Mingyue turned to look at Li Zheng: "How is it, Li Zheng, is there any problem?"

Li Zheng thought for a while and had to nod.

"Indeed, I can't think of anyone else who could do it but myself."

"Hmm..." Lin Yujing was in a dilemma.

Scumbag...

Want to be a leader? !

Office, superior, subordinate.

Bullying!

saturation!

How can this be topped!

Chapter 320 Make it clear, Kobayashi, I am your superior

At 12 o'clock sharp, YF-87 returned to zero for the second time, and the improvement route discussion meeting officially started.

Although Li Zheng has gone deep in the data field, just like last time, he doesn't know what the results he got mean, just like an artificial intelligence machine, he doesn't know what the language he gives back represents what a meaning.

In the eyes of the engineers of the [-]th Institute, these dismantling inspections obtained crack images and data, which all pointed to a unique result very clearly——

Synchronous precession.

In the field of spaceflight, the effect of this word is equivalent to Cthulhu's crooning...

A horrible and unreasonable existence.

Among them, "precession" may also be called "vibration".

Speaking of vibration, this is an old friend of aerospace, which is equivalent to BUG to programmers and probability to mobile game players.

During the launch process, the rocket will encounter various vibrations, and the structure and materials have their limits and cannot withstand large vibrations.

In the design stage, of course, these complex situations will be taken into consideration, and various vibration reduction methods will be used. Huang Er has also adopted the latest damping and variable energy pressure accumulator for vibration suppression.

Under normal circumstances, there is no problem with this design, and 8.8 will succeed with a little luck.

But in the most demanding vibration environment, the engine unexpectedly issued a Cthulhu croon...

This croon, which went nowhere on the first launch, was not caught.

In the recent shafting fracture accident, it was covered by countless huge noises, and it was also impossible to capture.

But Liu Rui used his terrifying perseverance to capture clues in other test data.

On this basis, Li Zheng used mathematical and algorithmic tools to extract features, expanding the scope of screening overnight to all historical data in history.

As he said, it is meaningless to take out such "whispering" alone, it is dispensable like the wind blowing leaves, but stacking countless whispers together...

He finally heard Cthulhu's voice.

Nothing but the sound of mathematical forms.

Next, Zhu Mingyue went a step further and translated this crooning into an engineering language——

In a harsh vibration environment, when the turbine rotor operates at a supercritical speed, some wonderful changes occur in the local dynamics and material properties, resulting in a change in its natural vibration frequency, which in turn resonates with the operating frequency.

This also means that this part has produced a "rebellion", trying to rotate and vibrate in its own way.

During this process, the turbine rotor is bound to bear enormous structural stress.

Those tiny to invisible cracks were created just like that.

And when the resonance is severe to a certain extent and the structural stress exceeds the yield limit of the material, the crack will expand rapidly, and then break in the violent rotation.

What's more frightening is that subsynchronous precession is still a kind of self-excited vibration, which will produce greater vibration due to vibration.

It's like 100 Liu Xiang holding hands and forming a circle, running clockwise, according to the requirements, running a circle in one minute.

Because they are all Liu Xiang, this speed is nothing to them, so they ran happily.

But suddenly!

There is a song called Chicken You Are So Beautiful.

One of them, Liu Xiang, suddenly became an idol.

Let's start singing and dancing!

At this time, it becomes 99 Liu Xiang and a singing and dancing idol running in circles.

But that's not enough to crash.

After all, Liu Xiang next to him would force his idol to run together. Although it was a bit tiring, 99 Liu Xiang could still stand up to an idol.

But the scary thing is that the one who was dragged away was an idol.

He would not honestly hang his body in the air with his arms outstretched, and be dragged away by Liu Xiang in the front and back.

He is going to sing and dance.

In fact, at the same time he turned into an idol, he sang the next song, Chicken You Are So Beautiful.

In an instant, the two Liu Xiangs on his left and right were infected and began to sing and dance.

The number of singers and dancers suddenly became three, which made the runners next to them miserable.

But this is just the beginning.

More chickens, you are so beautiful, they are already coming in wave after wave...

When the content of singing and dancing is 1%, this circle running can still be maintained, and it will only cause imperceptible muscle tearing to a few runners.

When the content reaches 3%, runners can already feel the pain of arm pulling.

When the content reaches 5%, the pulling force will reach the endurance limit of the runner, and he will either let go or break his arm.

This is self-oscillation, which is both cause and effect.

Where did the original "chicken you are too beautiful" come from and how to avoid it is still an engineering problem.

Just like a middle-aged man staying at home, there will always be an idol's name pasted on his face.

Since then, the logic of the accident has been completely clear.

In the conference room, Zhu Mingyue also started to reflect and summarize.

"During the first zeroing, we didn't find small local cracks, only the damage to the exhaust system."

"From the current perspective, the problem of the exhaust system is not isolated at all. It is a chain reaction caused by the resonance of the turbo system. It's just that the exhaust system at that time was relatively fragile and broke before the turbo broke."

"There is no doubt that this is the direct cause of the failure of the 8.8 launch, but it is by no means the root cause."

"After 8.8, the first reset to zero began. In our analysis and processing, we had serious luck. A pneumonia patient was prescribed cough medicine."

"In the end, in the 10.5 test run, the tragedy of the shaft system breaking completely occurred."

"I personally, and the seventeen YF-87 teams, cannot absolve myself of the blame."

"But although I am in the position of a sinner, I still want to thank the comrades of the First Academy for their hard work on the task of zeroing."

"Among them, Comrades Li Zheng and Lin Yujing made outstanding contributions. Through in-depth data analysis, they got the pulse twice and sent it to my eyes. Digging deeper on this foundation, only thinking of taking the crime and doing meritorious deeds as soon as possible, has led Huang Er to the current predicament. I know that apologizing is meaningless, but..."

Zhu Mingyue stood up after speaking, and bowed deeply to the audience.

"Leaders, comrades, I'm sorry."

The people in the entire conference room also stood up almost at the same time, not intending to accept the apology.

"Okay." Zhao Zhenhua personally stepped forward, helped Zhu Mingyue back, and waved to the audience, "Leave this all the time, sit down, sit down."

After everyone was seated, Zhao Zhenhua sighed and said:

"I am also responsible. I pushed too hard."

"Actually, when it was reset to zero for the first time, after the failure model was determined, Zhang Zhicheng believed that the accident was not simple. This exhaust system has been tested and will not drop the chain for no reason."

"His opinion is that it will take about half a month to study the causes in depth."

"it's me."

"It was me at the time, who rejected this opinion and asked to improve the exhaust system as soon as possible and test the car as soon as possible."

"So, don't have any psychological burden."

"As I said at the beginning, I set the route, follow me, and I will be responsible for any accidents."

"It's the same now. This responsibility belongs to me. This point must be implemented in the report. It was not Zhu Mingyue, Zhang Zhicheng, or me, Zhao Zhenhua, who was eager for success before."

"So everyone, don't hesitate, don't feel guilty." Zhao Zhenhua waved his arms vigorously, "Fuck it all for me, if you change it again, if something happens again, I will take it!"

Zhao Zhenhua's words once again aroused the emotions of the participants, regardless of their age, their eyes were a little wet.

If the leader of the hospital can achieve this level, what is there to hesitate?

Fight!

Taking advantage of this momentum, Zhu Mingyue proposed three routes.

First, steel plates are used to strengthen the entire shaft system.

Second, redesign to bypass this problem.

Third, list all the possible causes of resonance, and make local improvements in carpet.

Obviously, Zhu Mingyue had mentioned the first two routes before.

Even if it is determined that the cause is a synchronous precession, there is no clear solution internationally, and it is still a frontier field in engineering design, otherwise Cthulhu's crooning would not be needed to describe it.