Back in the computer room, He Zhongrui regained his spirits and took the two interns to visit while making a general introduction.

In other words, this is the first time Li Zheng has entered the central control room, and although the volume in front of him is small, it is also complete.

There are six large screens on the main wall, two of which are video surveillance of the launch site, and the remaining four display a series of parameters and charts that only the best of the best can understand.

On the opposite side of the screen, there are three rows of desks, and there are about twenty or thirty desktops and portable computers combined.

Although there are not many people in the computer room, they are all wearing gray test suits and special cloth shoes.

It's like a small launch center.

In fact, the functions here are more or less the same as those of the launch center.

The most important job of the test site in the western suburbs is to be responsible for the ground test test of the rocket as a whole.

To put it simply, the prototype is fixed on the launch pad, let it run in situ, and achieve the purpose of finding problems by collecting and analyzing its operating parameters.

The place where Li Zheng and Lin Yujing are in front of them is actually just a master control room, and the test bench is a kilometer away from here.

As for the actual test, it is not often seen because of its high fuel cost, and this kind of test usually has Shen Tinglan and others present.

The main work of the test team is to reorganize all the test data of Huang Er since the establishment of the project, sort out and conduct preliminary analysis of those anomalies that were not considered abnormal, and feedback them to the technical team on a daily basis.

At the same time, the engine test data of the outer courtyard, especially the sixth courtyard, are also comprehensively inspected, and this part of the workload is really huge.

"Are we also responsible for the data of the Sixth Academy?" asked Li Zheng as He Zhongrui walked.

"It stands to reason that they should be responsible for themselves, but Director Chen insisted that the data should be sifted over, and we should also sift it through here. He Zhongrui rubbed the bags under his eyes and sighed, "Have you read the press release on the launch failure?"

"Well, the core level engine shut down early. Lin Yujing stepped forward and asked curiously, "Is this really the case?"

"Haha, my classmates and friends also asked the same question. He Zhongrui waved his hand and smiled, "It's really this, don't listen to any conspiracy theories, the draft will definitely not expose the core technology, but it won't be a lie." ”

"Well, then it's clearly the engine. Lin Yujing raised his cheeks and said, "The engine YF-87 used in the first level of the core was developed by the Sixth Academy, and they should be as nervous as our institute now." ”

"What? What 87? What Sixth Courtyard?" Li Zheng exclaimed, "Why do you suddenly understand so much?"

Lin Yujing hurriedly turned her head and looked left and right: "Didn't you read the administrative materials and project documents you gave yesterday?"

"It was 12 o'clock when I got home and took a shower. Li Zheng clenched his fists angrily, "It's worthy of you, and you're stealing from school!"

"Just, the ...... I watched on the way home"

"You're driving on the road, driving me!"

"Oops, don't care so much about ......"

He Zhongrui was listening a little wrong.

The ears of the other engineers who were working seriously on the surface were also pricked up.

The atmosphere of the computer room instantly became solemn and sour.

"Take the liberty of asking......" He Zhongrui swallowed and spat at the mouth, plucked up the courage to ask, "Are you two boyfriend and girlfriend?"

“？？？”

"No! no!"

This answer was like a refreshing wind, blowing away the solemnity of the entire computer room.

The engineers, who had been nervous, became happy again.

He Zhongrui also breathed a sigh of relief and smiled: "I'm sorry, I'm sorry, it's up to the two of you...... It's very close. ”

Li Zheng shook his head and said, "It's just a normal classmate friendship." ”

"There is no friendship. Lin Yujing added, "It's just a competitive relationship for exams." ”

"Haha, hahaha, when it comes to exams...... He Zhongrui raised his glasses and smiled, "The people here have all passed the exam, and they understand the healthy competition between classmates very well." ”

The engineers in front of the screen nodded confidently, and those with glasses followed suit.

The people who can sit here, usually in their own schools, are in the top ten.

However, they are only empty, lonely, and in the top ten of the soul.

Keen on exam results, beautiful and cute female high school students, why didn't I meet them back then?

Fortunately, there is reincarnation in the way of heaven.

Director Chen, isn't this just arranged?

It's time to show ignorant high school students the charm of a true academic bully.

But there are a few people who are still skeptical.

An engineer who had just taken over turned sideways and asked, "Which school are they from?"

"Sakura Lake. ”

"Hi...... I thought it had to be the fourth middle school and the big one. The engineer smiled and took out the computer in his bag, "Leadership, right?"

"I heard that it seems to be a greeting from the Ministry of Science and Technology. ”

The engineer smiled and looked up at the two of them: "The students of this kind of school still talk about the competition results, which is quite cute when you think about it." ”

"Yes......" The engineer next to him said with a smile, "Lao Tzu came out of the college entrance examination from Sacheon, watching the children in the school next to Jijing Park compete for results, I really don't know how to laugh." ”

The two looked at each other and smiled, but didn't say much.

I believe that soon, there will be a chance to show a hand.

In front of the monitoring screen wall, He Zhongrui briefly explained to Li Zheng those key words that he didn't understand.

The first is the YF-87 engine.

Y, take the first letter of "liquid" pinyin.

F, take the initial letter of the engine pinyin.

87 represents its serial number.

Together, it can be understood as the Type 87 liquid engine.

Similarly, there are WP (turbojet) type, HS (piston type) type and so on.

And this YF-87, which marks the industrial level of China, was also developed by the Sixth Academy of Astronautics.

The Sixth Academy, namely the Aerospace Propulsion Technology Research Institute, specializes in liquid engines, and its products numbered after the YF-50 are basically tailored for the Yellow River series of rockets, which can be said to be the largest research institute with the closest cooperation with the First Academy.

At the same time, it is also the hospital that is most involved in this defeat, except for one hospital.

It stands to reason that the investigation of internal problems in the engine should be completed by the Sixth Academy.

But it is obvious that Chen Hongbing is not ready to fully trust the Sixth Academy in this situation, but to let the test team of the first department advance synchronously.

As a result, a limited number of test team members were tasked with the extremely heavy task of studying and analyzing thousands of test data that were completely unfamiliar and trying to find clues from them.

"This task is about 17% complete now, and it will get faster and faster. He Zhongrui said, while leading the two to a table full of materials, "These are the necessary knowledge to study engine test data, you guys for half a day, try how much you can understand, if it's too difficult, I'll arrange other work." ”

At this moment, an engineer who had just passed by the waterway poked his head and said, "These are too difficult for high school students, why don't you come to me to sort out the documents?"

"I don't want to ...... Director Chen just called, and asked me to give them a hard job. He Zhongrui shook his head helplessly, and said to the two, "To be honest, this part of the work basically has to be done for three or four years to be able to carry it, including myself, I also studied for about a week before I could barely understand the engine test." ”

As he spoke, he picked up a book of materials at random, flipped a page at random, looked at the complex schemas and data, and said, "It's not that I'm embarrassed for you, just tell me if you don't understand, I'll ask Director Chen again to see if you can start simple." ”

"Done. Li Zheng rubbed his hands and stepped forward, ready to go.

"I ...... I can't. Lin Yujing swallowed and raised her hand and said, "I apply to do a simple ...... directly."

"Tell me earlier. He Zhongrui smiled, "It's just right, you sort out the data we sifted out last night, integrate it into a document and send it to the technical team." Come on, come on, I'll teach you. ”

"Don't, don't, don't!" The old man who was watching the play next to him rushed forward, "Team leader, you are busy with other things, I can teach this kind of work." ”

"Eh, you can't tell. ”

"I've been doing this work all along, I know better than you...... Team leader, you see you've been busy all night, so hurry up and rest. ”

"The newcomer has just arrived, is this time for me to rest?"

When they are engaged in pointless scrambles.

Li Zheng had already pulled out a chair and sat down at the information table, and steadily set up the scratch paper, notebook and calculator.

I didn't even have time to look for something to learn, and this material bumped into it by itself.

You can't learn to die of it!

……

Li Zheng's study is a full forty minutes.

When he returned from his studies and found He Zhongrui, the latter had just finished telling Lin Yujing about the document and was about to go to the lounge to squint.

As soon as he saw Li Zheng coming, He Zhongrui smiled tiredly: "What I said is right, I don't understand...... In this way, I have explained the matter of the document to Xiaolin, you first sort it out with her and familiarize yourself with the work. ”

"No, I basically understand it. Li Zheng beckoned expectantly, "Come on, come on, do some big work." ”

"???" He Zhongrui was stunned for a moment, and then glanced at the data table, "You ...... Just read two pages and think you're fine?"

"I've seen a lot. Li Zheng stubbornly explained, "It's just that I have been exposed to a lot of knowledge before, and I will skip if I can skip it." ”

"No......" He Zhongrui grabbed his scalp and said, "Aerospace engine knowledge, where can you teach me to get in touch with it?"

Li Zheng didn't want to say anything, only raised his eyebrows and said, "Okay, Brother Rui, let's try some big work first." ”

He Zhongrui saw his hippie smiling face, and was a little angry: "Li Zheng, how capable are you to do so much, in your current situation, do I dare to give you a job?"

"Ah, this ......" Li Zheng was embarrassed.

He didn't blame He Zhongrui, common sense inferred that he did have a problem.

But how can this be explained......

At this time, a sneer suddenly came.

"Test him. Lin Yujing sat in front of the computer, glanced at the document and said, "Just test him casually." ”

"Wonderful. Li Zheng's eyes widened, and he hooked his hand at He Zhongrui again, "Test me." ”

"......" He Zhongrui was naturally too lazy to waste this time, let alone being sleepy, but considering the complexity of the identities of these two people, he finally nodded, "Li Zheng, the work is really tight now, if you can't answer, either go back and continue to study, or do document work with Xiaolin, at least don't increase our burden." ”

"Definitely. Li Zheng's expression gradually became serious, "Teacher He, let's ask the difficult questions directly to save time." ”

"It's hard to ask. Lin Yujing coaxed beside him.

"Haha......" He Zhongrui smiled bitterly, "I really want to give you face...... But since Kobayashi has said so...... You're welcome. ”

"Please ......"

He Zhongrui rubbed his forehead and thought.

Several people in the office also frantically peeked over.

It's just a high school level, and it's even wild in the field of master's and doctor's degrees.

It's time to show the dignity of a top student, team leader.

Let Lin Yujing also take a good look at the level of the test group.

The words "aerospace engineer" are not called in vain.

As for He Zhongrui, although he was asked to solve the problem, he was a doctorate-level existence after all, and as soon as he came up, he would come up with a sharp problem that the other party would definitely not be able to answer, and it was inevitable that he would bully the juniors.

On the other hand, he also wanted to take the opportunity to examine Li Zheng's level.

Therefore, he asked a question of stability.

"The main failure modes of pump-pressure engines. ”

Li Zheng replied immediately.

A total of 12 items were summarized. ”

"1. Joint leakage. ”

"2. The launcher is abnormal. ”

"3. Hot gas leakage. ”

……

"12. The valve works abnormally. ”

He Zhongrui was slightly dumbfounded, and then asked, "Where does each failure mode correspond?"

"Leakage, corresponding to joints, welds, cracks, turning seals, ......"

……

"Foreign bodies, corresponding injectors, turbopumps, airflow holes. ”

He Zhongrui stared at Li Zheng with a grim face for a long time before asking, "Have you carried it before?"

Li Zheng had no choice but to laugh back.

Who the fuck doesn't have to carry this thing?

"You don't have to carry this. Li Zheng explained, "After a comprehensive understanding of the engine structural components, a fault can naturally be analyzed, and it is good to understand." ”

Not only He Zhongrui, but even the others who were crazy about peeking were a little embarrassed.

Fuck you, you just have to carry it, understand a hair.

They don't know that Li Zheng, who has been tested by two competitions and a series of thinking tempering......

The brain has already become strange.

"......," He Zhongrui asked after a moment's struggle, "Please list a few main fault characteristic value parameters." ”

"Flow, pressure, thrust, temperature, vibration, speed, stress, torque, ......"

"Enough. He Zhongrui raised his hand and said, "Briefly talk about how to choose the eigenvalues." ”

"N feature parameters xk are selected from the existing N feature parameters xi, and the optimal feature subset is formed in the sense of a certain index function J, and all possible alternative feature values are ......"

He Zhongrui interrupted Li Zheng again and asked again, "What is AWSSA?"

This time, Li Zheng really thought for a while before saying: "The adaptive weighting and averaging algorithm is one of the algorithms for fault analysis and prediction based on engine characteristic signals. ”

He Zhongrui suddenly turned around, picked up the pen and paper on the table, and wrote two lines of calculations that were absolutely impossible for people with more than 60% of the hair volume to understand.

"The top is the mean of the test parameters, and the bottom is the variance, can you calculate the Grubbs statistic?"

"Wait a minute......" Li Zheng took the pen and thought about it, and wrote down a formula that although it is simple, it is possible for people within 70% of the volume to understand, and then took out the calculator and said, "Teacher, you go and rest for a while, and I will unfold and calculate slowly." ”

"No need......" He Zhongrui pressed Li Zheng's arm, and his whole face showed a kind of innocence in doubting life, "Why do you even know fuzzy mathematics?!"

"It's just ......," Li Zheng said hesitantly, "I understand a little." ”

"......" He Zhongrui looked at Li Zheng, as if the word "why" was about to shoot out of his eyes.

After a long time, he let go of his hand and said to a person in the back row.

"You teach him the process of analyzing engine test data. ”

“…… Good ......"

He Zhongrui looked at Li Zheng, then looked at a table of information, and finally asked: "Why ......?"

Suddenly, another laugh came.

"Hmm...... Lin Yujing covered her mouth and smiled, "Now you know how difficult it is for me...... Who has ever learned this? ”