The military-industrial scientific research system of the academic master

However, the surprise in Fang Zhen's eyes only lasted for a moment.

"Junior brother, if you want to redesign the wing, it will definitely affect the whole body. The overall structural characteristics of the aircraft will be changed, and it may also involve a higher level of materials and manufacturing technology, both in terms of cost and capability... …”

Fang Zhen's concerns are actually justified.

Because products don’t grow on their own off the shelf.

No matter how miraculous abilities Chang Haonan shows, things in the engineering field must eventually be implemented into production and manufacturing.

But this field cannot be promoted by the flash of inspiration of one or two geniuses.

Even if the raw materials, machinery and equipment, and a full set of technical documents are prepared for you, just cultivating workers who can adapt to new equipment and new technologies will not be achieved overnight.

The wing design scheme in their hands has basically reached the current upper limit in this regard.

But this time, before Han Feng could explain, Du Yishan spoke first.

"I think according to the calculations written by Xiao Chang, we should consider using active suppression methods without modifying the wing design?"

Although he has long passed the golden age of doing research, Du Yishan is experienced and well-informed after all, so he can see far more from those ten pieces of draft paper than two PhDs.

"Yes, Teacher Du is right." Chang Haonan nodded and continued:

"We can use model predictive control (MPC) theory to handle the constrained control system through rolling optimization and feedback correction to achieve active suppression of chatter."

"So you need to consider the influence of the flaperons and do aerodynamic servo elastic modeling?" Yao Mengna's eyes lit up.

She was just thinking about why Chang Haonan did this.

I originally thought it was just the other party's obsessive-compulsive disorder, but I didn't expect that there was a greater purpose behind it.

Thinking of this, Yao Mengna sighed softly in her heart.

At the beginning, she still felt a little unwilling to admit defeat towards Chang Haonan.

But now...

Recognize the reality.

Chang Haonan nodded: "Of course, but there is no need to re-simulate this time. Just apply an MPC control signal to the wingtip acceleration curve just calculated. I have already written the specific control rate into the program before."

He had already said this. How could the two doctors not understand? Fang Zhen quickly came back to the computer and started processing the data.

The next ten minutes felt like ten hours.

"After applying MPC control to the wing, the flutter critical speed increased to...175m/s."

Fang Zhen's voice was trembling.

"That's no problem. 175m/s is equivalent to 630km/h. The safety margin is almost a quarter."

Chang Haonan's mentality was very stable at this time: "So our passenger aircraft can definitely use this new wing design!"

However, this time it was Yao Mengna who was worried.

After hesitating for a few seconds, she spoke in a voice that only four people could hear:

"But teacher, Junior Brother Chang, this is a brand-new engineering model after all. Professor Huo Jint is a foreign expert hired with a lot of money by the Haojing 603 Institute. The results are so different at once. Do you think they can really dare to use it?" What?"

Oddly enough, Yao Mengna was usually fearless when doing scientific research, but this time she was a little worried for the first time.

"foreign expert?"

At this time Du Yishan also recovered from the initial excitement:

"Huh, what's wrong with the foreign expert? Does what he says from the British have to be right?"

As he spoke, he stretched out two fingers and knocked on the table next to him: "Since the 603 Institute has handed over this project to us, it means that they at least have this idea and the courage."

"Then our topic is basically...completed?"

Fang Zhen next to him couldn't even believe what happened.

You know, just one day ago, he and Yao Mengna were still struggling with the idea of ​​​​nonlinear simulation.

One day later, this problem was easily solved by a new undergraduate student who joined the research team.

By the way, the problem of the wing flutter critical speed being too low was also solved.

"The completion of the project must be done slowly. At least the completion report needs to be polished."

Du Yishan looked at the piece of paper in front of Fang Zhen with the calculation results written on it and said:

"I will personally go to Haojing tomorrow to explain the situation clearly to Comrade Zhou Yonghang and Comrade Yi Yuanhe. This is not just a problem of an air wing, nor is it just a passenger aircraft project."

Zhou Yonghang is now the director of Haojing Institute 603, and Yi Yuanhe is the chief engineer. They must sign and agree to replace the wings and conduct a flutter test again, a risky test subject.

Chang Haonan next to him remained silent, but he was already overjoyed in his heart.

As an academician, Du Yishan no longer holds front-line positions, but his influence is still there after all.

If he comes forward, there is a high probability that the 603 Institute will choose to believe this result and conduct a series of subsequent flight tests.

Once the test shows that there is no problem with this method, Chang Haonan, its creator, will definitely be noticed and can at least participate in the MA-60 follow-up project.

Compared with his initial plan to start with Professor Liu Hongbo and then gradually get involved with the Xinzhou 60 project, the progress has been made many times faster.

"It's just Xiao Chang." Du Yishan pulled a chair and sat next to Chang Haonan: "Your model involves our specific model design, and it has a wide range of applications. It will play a role in the entire aircraft design, especially in the field of passenger aircraft design. It has a huge effect, so... I’m afraid it won’t be suitable for public release in a short period of time.”

Chang Haonan was stunned.

"what do you mean……"

Obviously, since Du Yishan just expressed his intention to go to Haojing in person, he must not be prepared to hold on to this result.

So the only possibility is...

"Let the 603 Institute conduct verification first. If it can be determined to be feasible, it will become the internal design material of our national aviation system."

Du Yishan took off his glasses, wiped them with his clothes and put them back on:

"Only this kind of internal material can be seen by very few people."

"It's okay, Mr. Du." Chang Haonan smiled and replied in a nonchalant tone: "I have told you before that I think the value of our China Airlines people is not reflected through papers."

How could he be satisfied with gaining a little fame in the academic circle after reviving his life with the system?

The top priority is to find ways to gain access to higher-end projects as soon as possible, obtain more resources, and help China's aviation industry, and even the entire industry, develop on the fast track.

For him, the paper is just a means, not an end!

The previous improved design of the J-7 was said to be a second-and-a-half-generation improved model, and it was just a course design assignment, so it was necessary to use the influence of the journal to let others see it.

The meaning and importance of the engineering model he created today are completely different.

It can completely rely on the ongoing MA-60 project and be promoted internally as "advanced experience".

This weight is much larger than a paper.

You know, this kind of engineering model that can be widely used, even in large companies such as Boeing, Lockheed Martin, and Rolls-Royce, is definitely a secret that will not be disclosed to the outside world casually.

As for China Aviation Industry, which does not have such a strong family background, it has to keep these few unique skills.

Hearing Chang Haonan's decisive answer, Yao Mengna looked at him with a hint of understanding.

Fang Zhen next to him lowered his head, showing a thoughtful expression.

As for Du Yishan, he just patted Chang Haonan on the shoulder and nodded slightly.

Of course he could see that his student was not hypocritical when he spoke, and this was not the first time that the other party had made a similar statement.

In 1993, Jinling University was the first to put forward a mandatory requirement for doctoral graduates to publish SCI papers, and other schools quickly followed suit.

By 1996, a thesis-only trend had gradually begun to form.

Of course, from the perspective of ensuring the quality of graduate training, this cannot be said to be a bad thing.

However, it is inevitable that engineering disciplines such as aircraft design, which are not so easy to produce papers, will be affected.

And under this background, it is even more rare for Chang Haonan to have this kind of awareness.

After being satisfied, Du Yishan suddenly had a bold idea——

Perhaps such capable and determined students can be allowed to participate in some projects in advance.

It can be regarded as injecting some rare fresh blood into the Chinese aviation industry.

But before that, the 603 Institute must first verify the correctness of Chang Haonan's model.

Otherwise, the persuasiveness may not be enough.

Thinking of this, he took out a bunch of keys from his pocket and handed them to Xia Tian next to him:

"Xiaoxia, you go to my office and get some floppy disks and copy the project files from the computer into them. I'll use them tomorrow."

There is no small matter in the project. Even if he is already an academician, he still has to provide enough real evidence to reassure the 603 institute.

Xia Tian moved quickly, and within a few minutes he came back with a floppy disk box, then sat in front of the computer and started copying data.

Although the capacity of a floppy disk is only 1.44 or 2.88MB, its read and write speed is even lower, usually more than ten to twenty KB/s, and it is also unstable.

Therefore, it may even take several minutes to fill up a disk.

Taking advantage of this moment, Du Yishan walked to the side and looked at the calendar hanging on the wall:

"After I come back from Haojing, we will have a team meeting in the afternoon the day after tomorrow. Let's make some preparations in the past two days."

Then he turned to Chang Haonan and said alone:

"Also, Xiao Chang, computer-aided design and simulation should be the future development direction of our field. In these aspects, my age is not as good at accepting new things as you young people, so I want you to give everyone a system Let’s talk about this knowledge in a comprehensive way.”

Du Yishan had just finished speaking, and before Chang Haonan could react, Yao Mengna took over the words:

"Teacher Du is right. I have always had this idea before. Junior Brother Chang has a very high level in computer simulation. Sometimes a few words of guidance can open up people's minds. If he talks to us just once, everyone's progress will definitely be improved." It will be bigger.”

Although after this day's work, everyone in the laboratory already knows——

Chang Haonan is amazing.

But only Yao Mengna has actually consulted Chang Haonan and knows how powerful he is.

Knowing something yourself and being able to tell it are two different things.

Being able to tell it and being able to explain it clearly in a simple and profound way are two different things.

If you want to reach the third level, you must not only be superb, but you must at least be able to master it.

The two times Chang Haonan told her, although his attitude and tone always made her grit her teeth with anger, the effect was indeed very good.

In addition, Yao Mengna also wanted other people in the research team to experience the feeling of being crushed by IQ when receiving guidance from Chang Haonan.

We share blessings and suffer hardships together.

"Hmm... no problem." Chang Haonan rubbed his nose and replied: "The effect may not be very good if you just explain it. I can find a calculation example to demonstrate it on the spot."

Teaching more people what he already knows or what he has taught systematically and using collective strength has been his strategy since his rebirth.

Now that it was Du Yishan who took the initiative, it was naturally impossible for him to refuse.

"In this case……"

Du Yishan lowered his head and thought for a moment, and quickly thought of a feasible solution:

"It's not good to have so many people together in the computer room. I'm going to find a laptop. Then everyone else will report normally and then take a rest. Then you can give a demonstration to everyone."

At the same time that the content of the group meeting was finalized, Xia Tian finally completed the copying of the materials.

So Du Yishan put away the floppy disk box and prepared to leave the office.

But at this moment, Fang Zhen suddenly called him from behind:

"Teacher Du, we were going out to have a meal tonight to welcome the junior brothers who have just joined the group. Now it seems that the welcome banquet will turn into a celebration banquet. Do you want to come with us?"

Chang Haonan next to him was also stunned. No one had told him about this happening before.

It should be a surprise for him.

But today he brought a bigger surprise to everyone in the research group.

"Forget it, I won't join in the fun. Without an old man like me, you young people can't even have fun..."

Du Yishan didn't even reply. Halfway through, he suddenly realized something:

"Oh, does this mean you want me to reimburse you?"

Fang Zhen and Yao Mengna nodded together.

"Then you keep the invoice until the group meeting is over. If everyone makes good progress this semester, I will reimburse you in full."

In these aspects, Du Yishan is basically not stingy. Even when he was young a few years ago, he would organize autumn outings for the research team every year.

"oh--"

"Thank you, Teacher Du!"

"Long live Teacher Du!"

"Goodbye, Teacher Du, we won't send you off!"

"..."

While everyone was making noises, Chang Haonan checked the changes in the system.

For him, there is nothing new in today's output, so the theory and management ability values ​​have not changed, only the engineering experience has increased by 10 points.

But for this era, he has created a new and quite influential engineering model today.

Therefore, although it has not yet been verified and implemented, the scientific research points have been directly increased by 20 points.

So the current situation of the system becomes:

[Scientific research points: 26

Theoretical level: LV2 (0/10000)

Engineering experience: LV1 (70/1000)

Management ability: LV0 (5/100)

Comprehensive ability: LV1

Projects in progress: 0

Projects that can be carried out: 1]