Chapter 317: I'm really not pretending...

In the morning, it was nine thirty.
When Du Songtao was drinking coffee and watching the international news and entered the office, he found Li Zheng and a guy with a long inch lying on his desk.
Stay up late and work overtime? !
How can you do such a thing?
Du Songtao walked to Lin Yujing's station for the first time.
I found that Lin Yujing was sleeping on her stomach!
No, no, she also worked overtime?
It shouldn't be enough, just sleep on your stomach.
"Cough..." Du Songtao coughed in no small way.
No one cares about him.
Du Songtao had to walk to the desk, and just about to wake Li Zheng, he saw a printed report on the desk.
He put down the coffee cup for now, flipped through the report and scanned it.
Followed by staring.
Then it turned faster and faster, turning directly to the last page.
Then, fell into a long stagnation.
if it is like this……
So now it should...
He turned back subconsciously and wanted to rush into Zhu Mingyue's office.
But the pace soon slowed down again.
He can't do things like robbing merit.
He quickly returned to the table, waved the report and woke up Li Zheng and Liu Rui.
Without waiting for the two to speak, Zhu Mingyue pointed to the report.
"I don't understand the algorithm, just tell me how sure you are."
After Li Zheng got up for a short time, he shook his head and straightened his hair.
"More than 95%, and it can be verified immediately."
"We don't have the ability to test. We must let the team from the Sixth Institute come. It takes a lot of energy." Du Songtao waved the report, "I will immediately call Zhu Mingyue for the plenary meeting. If it is denied, the few of us will be a big joke. Up."
"I don't know Mr. Du." Liu Rui put on his eyes and stood up at this time, "Even if our conclusion is wrong, this matter is not funny at all."
"Understood." Du Songtao patted the two of them separately, and said sternly, "Wait for my news."
After that, he hurriedly left the office.
Five minutes later, all members of YF-87 received the emergency meeting notice.
When Du Songtao came back, Li Zheng and Liu Rui were finishing the report PPT, while Lin Yujing was still sleeping.
"How is it?" Du Songtao hurriedly walked to the desk, "Do you have any problems reporting?"
"Li Zheng's report is just fine, my mind is empty." Liu Rui gestured blankly, "My mind is full of curves now, and I don't even understand what Li Zheng is saying."
"You do the main work. Come on." Li Zhengcun turned his head after finishing the PPT. "Moreover, this aspect is the field of the 17th Institute. I don't want to be too aggressive. A bunch of teachers listen to me and there will be a problem. It feels so good..."
"But I really...now it's hard to even say a whole sentence..." Liu Rui squeezed his eyes and rubbed his forehead. "For the first time in my life, the brain is overloaded like this..."
"Okay, I'll decide this." Du Songtao lit the computer and said, "Li Zheng is responsible for the report. Liu Rui's name is written in the PPT first, OK?"
The two looked at each other before they reluctantly nodded.
"Okay." Du Songtao clapped his hands and forcibly pulled the two of them up. "Now, both of you are going to wash your faces and twitch your mouth to wake up. I will pour you coffee. If it can be like your conclusion It is verified as said, then I believe—"
"Starting today, Huang Er will fight back."
...
At 9:39, the last group member hurried to the conference room.
Only the emergency meeting was mentioned in the notice without too many details, and there was no prior news, which filled most people with a sense of mystery.
At the long table, Zhu Mingyue and Du Songtao were discussing nervously, while Li Zheng and Liu Rui were on the side of the projection screen, looking dullly adjusting the projection.
At 40 minutes, Zhu Mingyue and Du Songtao nodded to each other and put aside the discussion for now.
Zhu Mingyue omitted those opening remarks and spoke directly after putting down Du Songtao.
"General Du's team has unearthed breakthrough results in data analysis."
"There is a lot of content involved, and I didn't have time to look at it."
"Now we will directly listen to Li Zheng's report, discuss its accuracy on the spot, and arrange follow-up work."
The people in the meeting heard the words, and they couldn't hide their disappointment.
During this period of time, Du Songtao did put forward some ideas at the regular meeting, but it was either proved to be no or not at all.
Although he is an expert in satellites, he still lacks experience on the engine line, and he is quite a bit of a paper talk.
To put it in an exaggeration, it's like two people using mouths to hit LOL, how do I move, I use Q you and so on, according to his own logic barely established, but in practice, it is completely different.
From Zhu Mingyue's words, it is not difficult to hear that he himself clearly dismissed the responsibility, and it was purely that Du Songtao was dragging him to the meeting.
Airborne laymen will be like this, wasting everyone's time.
After it became clear that the reporter was Li Zheng, most people were undoubtedly even more disappointed.
Even though you are at a dead end, can you really do such a funny thing? Listen to a high school student's program here?
Li Zheng didn't notice this at all. He simply trimmed his hair and stood up.
In order to cheer up, he even got wet with his hair. Now he is a kind of greasy handsome and looks like an old programmer working overtime.
"Let me first make it clear that this work is not entirely done within our group."
"It was Liu Rui and the members of each group who completed 99%. I only completed the last 1%."
"I will briefly describe the process and conclusions below."
Li Zheng talked and pressed the manipulator, and a graph immediately appeared on the screen.
"This is a suspicious frequency curve."
"Such suspicious curves have thousands of segments in each test."
"I have been working on finding its eigenvalues, using a certain algorithm to eliminate interference items, finding the most suspicious part, and studying it in depth."
"But when it comes to engineering calculations, my personal ability is limited and I have never found a reliable method."
"At this time, Liu Rui sent these... these, and these..."
As Li Zheng said, he clicked the manipulator several times, and suspicious curves were tiled on the screen.
"We have analyzed and studied these curves." A team leader raised his hand and said, "Liu Rui's work is very hard, but following these clues we have not found any reliable conclusions. They are most likely to be normal during engine operation. Vibration noise."
Li Zheng nodded.
"Yes, just take out one of the analysis will be like this, but it appears periodically, neither light nor heavy, nor deep nor shallow."
"If you analyze in isolation, it's like solving a 12-element equation based on a single row of equations, and there will be no results."
"So, we need to list at least 12 formulas and combine them."
Li Zheng clicked the remote control again.
Those flat curves are stacked together.
The audience then looked sideways, and many disappointed people became energetic.
Those present are all experts in this field. Although they are just a bunch of superimposed curves, they have already felt the periodicity and relevance contained therein.
Li Zheng then struck again, and along the overlap of the 12 curves, a clear red curve appeared, and the related matrix and its dense mathematical expression appeared at the same time.
"This is the solution." Li Zheng circled more than half a page of mathematical symbols on the screen. "Teachers can take a look at it briefly, and we will turn the page again without clear questioning."
At this point, there are not many people present who can understand.
In one of them, a young engineer raised his hand.
"We have tried similar work, but you have to know that from the suspicious data found by Liu Rui, if you randomly select any 12 for correlation analysis, there will be some conclusions. Such an analysis method does not necessarily prove anything. Considering that he has drawn nearly 200 curves, this is not even possible to prove anything."
"These 12 items weren't just picked up by me, they were refined using optimized fault model algorithms." Li Zheng explained carefully.
"According to the parameters I entered in the system, it can extract 1, 2, or even 100. 12 is just a number that I can express here casually."
"In the actual analysis, the parameter I finally chose was 67, which is probably equivalent to solving a 67-element equation."
"Of course, my current expression is still very superficial. It involves the professional content of machine learning and data analysis. If the teacher is interested, you can read the three papers published before the 11th."
The engineer shook his head: "I know you can't break it apart carefully, but the problem is that this step of the argument is very important. If everyone is not convinced here, it will be difficult for everyone to accept your subsequent conclusions."
Li Zheng nodded confidently: "It doesn't matter, my conclusion can be verified by actual measurement."
The engineer was dumbfounded: "Do you mean, let us build another engine based on your conclusions for a test drive? I don't want to offend you, but we really don't have the time and resources to play like this..."
"No need to rebuild, no need to test the car, you can verify today, at most half a day is enough." Li Zheng helplessly said, "In fact, I did not expect to use such a simple report to make everyone accept my conclusion. This report is just for everyone. A reason to examine my conclusion."
"..." The engineer shook his head and raised his hand. "You go ahead. Let's assume that your failure curve holds for the time being."
"Thank you teacher for your tolerance." Li Zheng said, "To be precise, this conclusion is not a fault curve, but a curve describing the fault curve, an equation describing the equation, which is equivalent to reducing the fault analysis by one dimension and turning it into pure mathematics. The problem, based on this, we further calculated and unearthed this"
As soon as the screen turned, a more terrifying super matrix chart that no one on the scene could understand appeared.
"This is the mathematical description of the final failure." Li Zheng nodded, "I am not showing off my mathematics to confuse everyone. I just want to show more reliable arguments and deepen the reasons for everyone to prove my conclusion."
"Then next, we will briefly describe this description..."
"It became like this..."
"Although it is difficult to understand, this is actually one of the mathematical expressions of the two-dimensional projection of the shaft fault point..."
"So now... we have to restore this projection to the shaft system according to the structural parameters of the shaft system..."
"In short, it is to upgrade again..."
"You can understand this process as a computer operation process, first convert the characters we input into a binary sequence, and then output the characters we understand..."
"Don't show this expression, I'm really not pretending..."
"The final mathematical expression is very simple, I believe everyone will be able to understand..."
As Li Zheng went a little further, a few lines were condensed and moved to the point of calculation.
"Probability distribution?" A person has already called out, "To be precise, it is the point-like probability distribution in the cylinder."
Li Zheng was also very moved, and finally someone could understand.
He went a little further, and finally there was a figure that elementary school students could see.
That is a model diagram of a YF-87 turboshaft system, with numerous small red dots marked on the surface and inside.
"There are a thousand red dots on this picture."
"They hit the shaft system in a probability distribution."
"The denser the red dots, the more likely a problem is, the sparser the more likely it is."
"Limited by talents, the only work I can do is here."
Everyone looked at this engine that seemed to have been beaten by countless quanta, and fell into a heated discussion for a while.
Including Zhu Mingyue, also explored Du Songtao.
Before Zhu Mingyue could speak, Du Songtao had already raised his head.
"I know what you are going to say, don't ask me, I don't have time to understand the ones in the middle." Du Songtao asked against the guest, "Assuming Li Zheng is right, does this conclusion help the engine improvement?"
"The hypothesis is correct..." Zhu Mingyue looked at this picture and couldn't help pursing his lips, "The root of the disease has already been brought to our eyes."
During the discussion, one person raised his hand and said: "If it is this probability distribution, the conclusion is obvious... The question is, how do we believe that this conclusion is reliable? You just said that it can be verified today?"
"Yes." Li Zheng nodded, "This model is not only valid for the three previous tests, but also for every previous test."
"In the 30,000-second test run, I believe the problem has long been exposed, but it is too small to reach our alert threshold.
"But I can be sure that its exposure probability is positively related to the environmental difficulty parameter."
"Although my understanding of engines is far worse than the teachers present."
"But I have the confidence to make a hypothesis here—"
"Every previous test run, every engine, had different degrees of fracture."
"Maybe it was just a crack so small that it was invisible to the naked eye."
"But it must exist, and it's right in front of our eyes."
"At this moment, we still have 4 complete engines in the factory. They have undergone various levels of test runs, and the conclusions are all ‘stable operation’."
"Now, go to the factory and take them apart."
"There must be a crack."
"If you can't find it, I promise to disappear from here immediately, and no longer take up any of your time and resources."
Finally, Li Zheng bowed deeply.
"Sorry for taking up everyone's time."
The scene was silent.
All eyes looked at Zhu Mingyue.
After thinking about it briefly, Zhu Mingyue looked at the maintenance team leader: "I remember there were inspections after the test drive before?"
The group leader hesitated and said: "Yes, after every test run, a comprehensive inspection is conducted, and no cracks have been found."
"What level of inspection is it?" Li Zheng asked, "Is it disassembled? How fine is it?"
"One unit has been dismantled, no cracks have been found, and the other units have undergone adequate electrical and monitoring inspections." The team leader looked at Li Zheng, "The result of the complete dismantling should be the same..."
"How can I know if I don't try?" Li Zheng asked, "If you can't see it, use a magnifying glass. If you can't see a magnifying glass, use a microscope. There must be some. If you are exhausted, you can only do stupid work. Yes, he said that this is the spirit left by the older generation of the 17th Institute."
"..." The team leader was speechless, turning to Zhu Mingyue.
Zhu Mingyue hardly thought, and immediately took the case.
"The cost of verification is very low and it is worth a try."
Most people nodded convincingly.
If Li Zheng's conclusion needs to be verified by another engine, of course it cannot satisfy him.
But if you just check the existing engine, a few hours are enough.
To tell a joke, the man has a magnifying glass.
Seeing everyone's reaction, Zhu Mingyue also had a little confidence and nodded vigorously:
"I will talk about Li Zheng before arranging work."
"He said, if he can't find the crack, he will leave."
"I don't approve this matter."
"Here, I don’t care what your education is and how old you are. You are a top expert in data analysis. All your work is here. No one doubts your attitude and ability. Don’t be afraid even if you point in the wrong direction. I’m wrong. Do you still sit here dozens of times?"
"I said as soon as we met, we are a family, don't be very confrontational."
"That's why Li Zheng." Zhu Mingyue stared at Li Zheng and nodded, "Can you take back what you said? If it is wrong, get up and continue to work, can you?"
The leader of the maintenance team followed up and raised his hand: "That's right... the energy you just scared me... all brothers, no need..."
"Li Zheng, each of us wants to prove that you are right." The test team leader also nodded, "Whatever delays does not delay time, it is a family. We will go wherever there is a way, don't say that. Kind of talk."
"If everyone makes a mistake and has to leave, then the space system is afraid that no one can stay."
With everyone's friendly comfort, Li Zheng also wiped his eyes.
"Sorry, sorry... I was so excited just now, I didn't sleep last night..." Li Zheng smirked and scratched his head. "Take it back and I won't say anything later."
"Don't talk about you, you see Liu Rui's eyes are straight." Zhu Mingyue pointed to Liu Rui who was sluggish next to him, "Quickly rest a bit, as soon as it turns out, you will be busy."
However, Liu Rui's eyes were still straight, and it seemed that he didn't even hear this sentence, until the crowd laughed.
Soon, nearly half of Zhu Mingyue arranged to go out.
Most of them rushed to the Western Suburb Test Field, with the goal of two "smooth and intact" engines that have experienced thousands of seconds of test runs.
A small number of them were sent to the original factory in northern Hebei to inspect the remaining two that had been returned to the factory for maintenance.
In fact, this work can be done by the workshop engineers, but Zhu Mingyue is ready to pick up the "magnifying glass" for long-term inspection and fine inspection. The magnifying glass here is of course not a real magnifying glass, but a series of measurement and control instruments.
The good news is that an original engine in northern Hebei is being opened for maintenance. The original mechanic immediately undertook the task of disassembling and inspecting the machine. If you are lucky, the conclusion may come sooner than expected.
After a series of arrangements were over, Li Zheng answered some of his colleagues' questions, and it was already half an hour later.
At this time, Li Zheng seemed to have fought a tough battle, and his heart of the night was finally relieved.
As soon as he vented his anger, he collapsed weakly on the chair.
At this time, Zhu Mingyue also fully understood Zhao Zhenhua's bet.
Although winning or losing is unpredictable, it is indeed worth the bet.
Zhu Mingyue got up personally and walked to Li Zheng's side.
"Li Zheng, you should also take a rest. We have fallen a lot of people. Now we must save our strength."
"Yes..." Li Zheng stood up and said, "But...how can I sleep now..."
"That's right, let's take advantage of the remaining heat." Zhu Mingyue nodded, "No matter what the result is, your analysis method has its value. I will arrange the next work for you. The set of methods are systematically summarized, and when there is time, organize the people who engage in data to study, and file them into the database for subsequent work reference."
"This is fine." Li Zheng smiled, "I didn't expect to start holding the paper here."
"No, no, this is too core to be published as a paper." Zhu Mingyue supported Li Zheng's shoulders and said, "but its value must be higher than most papers. No matter what the result is, I will find a way to give you inferiority. Feedback from publishing core papers."
"I really don't need this..." Li Zheng said haha, "It's enough to connect to Harbin Institute of Technology quickly."
"Huh?" Zhu Mingyue asked, "If this conclusion is correct, do you still need them?"
"I still need it, and I need it even more." Li Zhengzhenzhen nodded, "I just found the way at best. If I want to go on, I will definitely need top engineering calculation support."
"Understood, don't worry, the document has been sent to the First Hospital, and Secretary Zhao will personally approve it."
As he was talking, Du Songtao, who had been playing soy sauce for a long time, strolled over.
"Old Zhu, are you stealing me?"
"Oh, it's all a family, what yours and mine."
"Don't come to this set!" Du Songtao also joked and shook his head, "Unexpectedly, my first generation grandmaster spent a long time talking to them, but you kid made up a bunch of calculations for them to convince..."
"Coincidence, coincidence." Li Zheng patted Liu Rui who was in a daze next to him. "Really, 99% of the work is done by him, and I have only played the level of an ordinary data analyst. And his content , It happened to coincide with my work during this period of time, we two met, just one point."
"Which so many happen to happen." Du Songtao sighed, "You kid can still sit still, and drill in one direction. You have to drill to a sufficient depth before you can feel Liu Rui's data. I made these all night. I have to admit that in this matter, my working ideas may be wrong..."
While talking, Zhu Mingyue's phone rang.
As soon as it was connected, Zhu Mingyue called out.
"you sure?!"
"Okay, send pictures here."
"Check the second one as soon as possible."
Zhu Mingyue put down the phone and rushed out of the conference room and shouted.
"No need to go, all come back!"
"Verification is over!"
"Start the second reset to zero!"
"Two and a half months, we have the last two and a half months!"
After a brief silence in the office area.
The cheers resounding across the three floors followed.
"Those machines are really cracked?"
"It's obviously a fault, why am I so happy!"
"I thought it was magic, it turned out to be mathematics."
At this moment.
Lin Yujing, who was sleeping in the office, straightened up suddenly.
"Well... what time is it... and people..."