In a classroom at Beijing University of Aeronautics and Astronautics, Chang Haonan was sitting on a chair, looking at the stack of airplane designs spread out in front of him with a bit of dazedness, as well as the three students who were dressed with a sense of age and looking at him with concern.

"Aren't I testing the JF-22 supervelocity wind tunnel in Base 29 that will soon be put into operation?" Chang Haonan secretly thought in his heart: "Where is this?" ”

The surrounding walls are slightly dilapidated, and the bottom of the wall is about a meter above the ground and is painted green, especially in the sun-exposed areas.

Two huge ceiling fans overhead were buzzing, and there was no sign of air conditioning.

The blackboard next to it turned out to be the kind of black cement board, instead of the common green board made of epoxy resin and polymer alloy, because of long-term use and wear, it has become a little white, and even sitting in Chang Haonan's current position can not see what is written on the side.

He was pretty sure there was no such place in Base 29.

Chang Haonan's eyes quickly focused on the wooden lectern in front of the blackboard, and in front of the lectern hung a school emblem, which was a pattern he was all too familiar with.

Jingcheng University of Aeronautics and Astronautics, his own alma mater.

He lifted his hand and pinched the right side of his cheek, then made sure it wasn't a dream.

"Haonan, Haonan?" One of them, a slightly chubby boy with curly hair, leaned over and gently patted Chang Haonan on the shoulder.

"Are you alright? Why did your face suddenly turn white like something, and you have been stunned for five or six minutes since just now, if you also find it too difficult to say it, the brothers will not laugh at you. ”

Chang Haonan turned his head to look at the other party, and it took a few more seconds to find this face from the distant memories.

"Old Wu?" Chang Haonan asked tentatively, "Why are you ......?"

The person who just spoke was his roommate when he was in college, named Wu Yifan, and the two had different aspirations but had a good relationship.

It's just that......

What appeared in front of Chang Haonan was the image of Wu Yifan when he was young, his hair was still very thick at that time, and there was no scar at the corner of his eye that was later cut out because of the revenge of his rivals.

"Hey, Haonan, even if you really find it difficult, you don't have to pretend that you don't know Lao Wu, even if we can't design a supersonic fighter, it's no problem to design a glider, it's not a shame." Another tall and thin boy smiled a little helplessly: "And I think you should take a break, you haven't stayed up late these days, right?" ”

This sentence finally completely awakened Chang Haonan's memory of the scene in front of him.

"Don't worry, I'm fine." He took a deep breath, then looked down again at the drawings on the table in front of him - it was none other than the design of a J-7, or more precisely, a replica of the J-7, the MiG-21.

This happened in the second semester of his junior year, that is, in the first half of 1996, because he was greatly stimulated by the dispute between China and the United States at the beginning of the year, so he decided to design an improved fighter based on the J-7 in this 10-credit aircraft design course.

The three people in front of him were classmates in the same class group as him.

In addition to Wu Yifan, who is not interested in this major but is determined to engage in business, the thin and tall man is named Zhou Shuwan, who is the other thigh of the group in addition to himself, and his father is a senior researcher at the 601 Institute, and only a few people know about this matter.

After graduation, Zhou Shuwan also entered the 601 Institute, and later served as the designer of a certain type of carrier-based aircraft subsystem.

As for the girl who hasn't spoken, her name is Zhang Man, she is a petite, sweet and lovely beauty with an average academic performance.

Because Zhou Shuwan has always liked her, he decided to let her join the group, but Zhang Man actually has no feelings for Zhou Shuwan, he just kept holding the latter's thighs, and all the experimental courses and group assignments got high scores, but Chang Haonan is not familiar with her, and there is no contact after graduation.

Such a group is actually only 2.5 people, but now the team formation stage has long ended, and it is impossible to change people casually.

Regarding Chang Haonan's idea of designing a supersonic fighter, the three of them naturally felt that it was completely impossible.

They didn't directly object, but they just found the design drawings of the J-7 prototype MiG-21, saying that since they want to improve, they should at least fully understand the design prototype.

If Chang Haonan can calculate the aerodynamic performance of the MiG-21, then they agree to accompany him on the adventure and continue, if not, then according to Zhou Shuwan's idea, to design a glider with a large aspect ratio.

Is it just the result...... After all, people have limits, and for Chang Haonan, who was originally only talented on the timeline, this matter was indeed beyond his ability.

In the end, I had to design a glider with the other three according to the agreement, although this course also got a good score in the end, but it became Chang Haonan's regret all along.

And the current situation, he should be back to his college days nearly 30 years ago, and it happens to be at this critical moment.

Calculating the performance of the MiG-21 is not a problem at all for the current Chang Haonan.

Because in addition to the work experience from later generations, the moment Chang Haonan saw the full picture of the design drawings, a [scientific research guidance system] suddenly appeared in his mind

After he comes up with a reasonable and closed-loop project idea, the system can spend a certain amount of [research points] to determine what to do and how to do it at each next step, and give him the ability to do it accordingly.

To put it simply, this system is the equivalent of a mentor who is responsive and accommodating.

The moment he saw this system, Chang Haonan almost fainted with excitement - after all, everyone who has studied in graduate school will want to have such a mentor.

Of course, if you consume 10 times the number of scientific research points, the system can also directly give the correct or optimal result, but as a person who has really brought the project, Chang Haonan knows very well that this is by no means the most efficient usage.

It takes time and energy to translate the results in his mind into reality, even if he doesn't sleep on his own, he can't output many specific scientific research results, and the scientific research points of the system probably don't support such a squander.

More importantly, Huaxia is not the only scientific researcher.

If we can help the system as a super mentor to drive the efficiency of the entire Chinese scientific research system by solving key problems or giving methodologies, then the power of the explosion will be thousands of times greater than that of a single person.

However, it is still too far to talk about these things in Chang Haonan's current state, so he decided to redeem his past regrets first.

[Research points: 10.]

Theoretical level (maximum level LV5): LV2 (0/10000)

Engineering Experience (Max LV5): LV1 (0/1000)

Management Ability (Max LV5): LV0 (0/100)

Comprehensive ability: LV1

Projects in progress: 0

Possible Projects:1】

The stat level is not high.

But that's a good thing.

It shows that for the system, the knowledge that Chang Haonan mastered before his rebirth was very rudimentary.

The future is promising!

……

Looking at the system panel, a bold idea popped into his head.

Although he himself knows that it is not very reliable.

But now that you have a system, you have to give it a try......

"Design me a J-20!"

Don't care if Huaxia can build the J-20 at this moment in 1996, you can say whether it is handsome or not!

Stealth, canard, twin-engine heavy combat, DSI air intake, active phased array radar......

You must know that at this time, YF22 has not yet completed the test flight!

However, Chang Haonan's YY was poured cold water not long after it began.

[Insufficient level of competence, no usable ideas for the project]

……

Obviously, his idea about the J-20 is only an idea at best, and it completely falls short of the "reasonable and closed-loop project concept" required by the system.

It's reasonable to think about it, it's like a new graduate student who asked his mentor to teach him to design a fifth-generation fighter jet, obviously still lacking in ability and experience.

"I still have to base myself on the existing equipment and change the MiG-21......" Chang Haonan had to pay attention to the MiG-21 design in front of him again.

The system now only has 10 scientific research points, absolutely can not be used indiscriminately, later generations do have a lot of MiG-21 in-depth improvements, but some of these designs require a large amount of computing simulation work, Chang Haonan does not know with the scientific research conditions in 1996 and his current ability, in the end can implement which kind of plan.

So Zhou Shuwan's idea is actually correct, let's figure out the MiG-21 first, and by the way, check what the hardware level of Beijing University of Aeronautics and Astronautics was in the mid-90s of the 20th century.

"The MiG-21 was modeled using CATIA, and the aerodynamic characteristics of the aircraft were simulated using the finite volume method." Chang Haonan said silently in his heart.

[Improve the project to consume science and technology points: 1 point, directly give the project result consumption points: 10 points, do you confirm the development of the MiG-21 modeling and simulation project?] 】

Chang Haonan took a deep breath and clenched his fists suddenly.

It's done!

"Confirm! Perfect the project! ”

A flood of information quickly flooded into his mind, and although it was still unknown what the outcome of this question would be, at least he already knew what to do next, and how to do it.

I see, I already understand the .jpg perfectly

After being silent for about half a minute, Chang Haonan spoke again: "I have thought of a way, believe me, even if it is a fighter jet, we can design it." ”

"Haonan, you...... Do you really have an idea? ”

Zhang Man put an enamel cup filled with hot water on the table in front of Chang Haonan and asked in a slightly skeptical tone.

On the side of the enamel cup is the military emblem of the Air Force, as well as the inscription of the instructor: "Build a strong People's Air Force, defend the Motherland, prepare for victory over the aggressor." ”

This is what Chang Haonan specially asked his father to get, and he has been carrying it with him since that incident, and he has been using it for many years.

As a person whose main purpose is just to get a high score, Zhang Man naturally felt that the idea of designing a fighter jet was a fantasy from the beginning, but after all, Chang Haonan's usual grades are among the best, and the course design work is indispensable to the latter's contribution, and she doesn't want to directly oppose making the relationship too stiff.

That's why he came up with the idea of letting Chang Haonan analyze the aerodynamic characteristics of the MiG-21, hoping to make the other party retreat.

There are no exams in this course, and the course design assignments will directly affect their final grades, and she doesn't want to go crazy with them.

"Thank you......" Chang Haonan picked up the cup and drank all the water inside, then directly grabbed the design drawing of the MiG-21, folded it and put it in the bag next to him.

"Let's go, let's go to the computer room!"