Chapter 844: Capacity Allocation of Turbofan 10
No matter what Li Yabo thinks, the candidates for the defense review team have been decided.
After Chang Haonan graduated last year, Du Yishan officially retired to take care of his old age, otherwise he would have to raise another one...
"Teacher..."
Tang Lintian left Finally, Li Yabo, who was numb, came to Chang Haonan's side, showing a frightened expression on his face:
"I just graduated with a bachelor's degree, so this is..."
"Don't worry too much, just prepare normally"
Chang Haonan was looking down at Li Yabo's thesis without raising his head. He replied:
"The content of your thesis is not a big problem even if you have a master's degree. No matter who comes, it will not be difficult for you."
No matter whether you are an undergraduate or a graduate, For masters and Ph.D. students, the key to passing or failing your graduation project is blind review.
There is no problem with the blind review. As long as the defense process is not particularly outrageous, you will not be stuck in graduation.
At best, it’s just a bit ugly on stage.
Of course, that’s what I said.
As a person involved, Li Yabo should definitely be nervous.
Especially since he plans to continue his studies after graduation, he must still get a good evaluation for his thesis.
"Li Zi, why is your face so white?"
After returning to the dormitory, a roommate quickly discovered something was wrong with Li Yabo.
“It’s time to answer the question, I’m nervous.”
The latter was lying on the bed, looking distracted.
"I'm going...are you still nervous?"
Another roommate joked in an exaggerated tone:
“Didn’t your boss just come up with an earth-shattering result?”
“That’s right, even for his sake, the review teacher, It’s impossible to make things difficult for you, right?”
“As for undergraduate thesis, isn’t it just a matter of doing it casually and then waking up after going through the motions...”
Just say something to a few people. As soon as I said something, the topic gradually changed from Li Yabo's mentor to their respective graduation projects.
and even their respective futures.
"Alas..."
Li Yabo, who was lying on the bed, sighed.
Obviously, his roommates still don’t know what kind of devil-level lineup they will face...
"Anyway, you guys...especially Lao Bai and Wu Pangqian and the two are going to graduate school... I still recommend getting ready..."
Soon, it was time for the defense.
The defense of undergraduate students is different from that of graduate students. Students in a college are divided into several groups, and each group corresponds to the same group of defending teachers.
The whole process basically lasts from the morning to the afternoon.
So, as one of the judges, Chang Haonan got up very early that day and arrived at the school about an hour early.
However, there were still many people standing in the corridor.
After all, June is the peak period for graduate defenses in addition to undergraduate students.
Among the crowd, Chang Haonan happened to meet a familiar face.
Zhou Shuwan.
At this time, the other party also noticed him at the same time.
"Nan...Chang...Professor Chang, what are you..."
The moment he saw Chang Haonan, the most terrifying possibility flashed through Zhou Shuwan's mind -
His former classmates were going to be his defense judges...
“Oh, I’m here to take a look at the undergraduate defense.”
Zhou Shuwan breathed a sigh of relief.
However, Chang Haonan asked again.
"What about you? I remember your research team's laboratory is not here, right?"
"I..."
Zhou Shuwan's eyes darkened, and his expression suddenly became unbearable:< br>
“Of course I am here to defend my graduation...”
“…”
Chang Haonan swore that he had indeed forgotten.
It has been three years since I graduated from my bachelor's degree. According to the normal schedule, isn't that just the graduation defense for my master's degree...
This whole thing is really a bit embarrassing.
"Then...will you continue to study for a Ph.D.?"
He quickly changed the subject.
"You must read it."
Zhou Shuwan also knew that Chang Haonan could not have done it on purpose just now. After adjusting his mentality slightly, he nodded:
"In terms of aviation life-saving equipment, our country There were few systematic studies before. It was gradually developed after the introduction of the KD36D ejection seat with Project 11 in the past two years. It was when manpower was needed. "
The J-11 series of fighters. The HTY8 is 100% restored according to the K36D drawings, and its performance is naturally as world-leading as the former.
However, the ejection seat needs to be adapted to the aircraft, so there is no way to directly move the HTY8 to other domestic aircraft.
Tactical aircraft are okay.
The HTY5 equipped with the J-10 is slightly inferior to the HTY8 in terms of ultimate ejection speed, but at least it can be regarded as a satisfactory third-generation ejection seat.
As for large aircraft, such as the H-6, the situation is not very optimistic.
The "glorious tradition" of crew members ejecting downwards is even maintained.
So, as Zhou Shuwan said, there is still a long way to go in this regard.
Just when the two were about to end their chat, a voice suddenly came from behind Chang Haonan.
It still sounds familiar.
“Mr. Chang.”
Chang Haonan turned around.
It was found to be Liu Gaozhuo. The commander-in-chief of Project 11.
Although the contact with Chang Haonan is not as much as that of He Ming, who is in charge of production, they are still old acquaintances.
“You have also been invited here... to be a defense reviewer?”
According to regulations, the defense committee of a graduate student must have members from other units.
Just like when Chang Haonan defended his doctoral thesis, he invited Yuan Xiangya and Mr. Qian.
"The main thing is to attend the meeting and be a judge."
While speaking, Liu Gaozhuo also noticed Zhou Shuwan who was opposite Chang Haonan:
"Hey, it seems that he is just here to be a judge. The judges..."
Then he turned his attention to Chang Haonan:
"You..."
"Classmate, classmate..."
"..."
After some explanation, Liu Gaozhuo finally understood the rather complicated relationship between the two.
"By the way, Mr. Chang, there is something that I want to talk to you about alone after the defense is over."
Before walking into the conference room opposite, Liu Gaozhuo approached Chang Hao Nan whispered next to him.
The latter was stunned for a moment, then nodded:
"Okay."
"But it may take me a little longer. You can find me at the computing center at four o'clock in the afternoon."
……
Li Yabo’s defense process was smooth sailing.
There was no situation where Chang Haonan was quarreling with the scholars on his behalf——
If he couldn't handle even this small scene, Chang Haonan wouldn't have been able to recruit him in the first place.
However, this is a hardship for the other people in the same group as Li Yabo.
Especially two of them who are also preparing to further their studies.
On a normal day, when encountering a more acute problem, the teacher would dare to stand up and help with a few words.
And now this scene...
Three academicians, a principal, and Chang Haonan.
Shivering.jpg
To sum it up is——
Answer and answer, just answer and not defend. Once you ask a question, apologize like crazy...
Of course, I gave it all in the end.
After all...
Graduating from an undergraduate degree is simply not a person.
Moreover, Beijing Airlines students still have a bottom line no matter how hard they paddle, and there are no particularly outrageous situations.
After the entire defense process, Chang Haonan first asked Tang Lintian to send Wang Yuanguang and Huang Yunbo to the canteen of Torch Group, while he went back to the office alone.
Liu Gaozhuo was waiting there as promised.
"Mr. Liu, what you said during the day is..."
The two sat down on the two sofas respectively, and Chang Haonan asked straight to the point.
"Mr. Chang, that's it."
Liu Gaozhuo explained:
"In accordance with the needs of the Air Force and combined with the progress of the Project 11 improvement project, we are prepared to deliver 6 trial production batches of J-11B fighter jets to the Air Force for early use in small batches."
"Then this is That's a good thing."
Chang Haonan filled the other party's glass of water:
"Whether it's the aircraft itself or our power, if the Air Force is willing to accept small batch trials, the progress will be much faster. ”
Liu Gaozhuo was holding a cup in one hand, and with the other hand he was arranging his hair with some embarrassment:
"The main thing is... our factory wants to try its best to hand over these aircraft before the end of this year, but the comrades at Liming said that by December, only 6 turbofan 10A engines can be provided at most. Look at this... …”
Chang Haonan understands.
This is to ask for production capacity.
Because Project No. 10 and Project No. 11 are advancing at the same time, and both require turbofan 10 as power, the already low production capacity is even more stretched.
Especially after entering 2000, the J-10A built two new single-seat aircraft, 03 and 04, and a two-seat prototype aircraft 05. Counting backups, the demand for the turbofan 10B suddenly increased. Lift it up.
The production capacity allocated to model A will naturally decrease.
"Alas..."
After thinking for a while, Chang Haonan sighed and replied:
"Mr. Liu, I will tell you everything directly. In the second half of the year, the total output of turbofan 10 will reach 10 units. Project 10 has three prototypes under construction, so that’s 3 units. There will always be one backup engine left, so the production capacity of these 6 turbofan 10A units will be , it is indeed the end.”
“We are all brothers, and it is impossible for me to cut off the supply of Project No. 10...”
When it came to this matter, Liu Gaozhuo realized that he really had no idea about production capacity allocation, so he had to tentatively ask:
"Then...can we consider expanding production?"
Chang Haonan Shaking his head:
“The production capacity of Turbofan 10 cannot increase, mainly because the special-shaped air film holes I originally designed for the turbine blades and turbine disk were indeed too complicated. The current combined EDM-Abrasive Flow process is used , Not to mention the long working hours, it still requires manual processing by experienced masters to reach the standard, but there are only so many masters..."
"It's not that I don't want to expand, it really can't be expanded... ”
Since China's high-temperature alloy materials are not up to standard, in order to ensure sufficient temperature in front of the turbine, an extremely complex internal structure of the air film hole has to be designed for the hot end component of the turbofan 10 -
Even better than in the previous generation The hole pattern used by Huaxia on the turbofan 15 is even more complicated.
After all, the latter, as an engine in the 2020s, can already use quite advanced high-temperature alloys.
The design difficulty is much smaller.
The cost...is that it is very difficult to ramp up production capacity.
From the production of prototype No. 01 to the present, although the overall process has been improved for several rounds, the total output has not improved much because of the speed-determining step of "master craftsmanship".
With no past life experience for reference, Chang Haonan could only fumble forward step by step.
And this was one of the main reasons why he decided to get involved in computational materials science.
(End of this chapter)