The other three looked at Chang Haonan with his fists clenched, and of course they knew that the latter had decided to make it difficult for himself in his coursework because of this incident.

What they didn't know was that Chang Haonan almost became an Air Force pilot back then, but during the physical examination, he was found to have a bad bite of his teeth, so he was brushed off.

"But Haonan, if that's the case, it's not just a matter of aircraft design." Zhou Shuwan has been exposed to it at home since he was a child, and he knows that he naturally has to be more than others: "Based on the existing mature technology, we have to consider the problems of production and manufacturing, but after all, we are only college students, and there is no way to know what the specific level of China's current aviation manufacturing technology is?" ”

Chang Haonan looked at Zhou Shuwan next to him, and stood in front of the desk: "From the beginning, I didn't prepare to just make a design that couldn't be landed. ”

According to common sense, Zhou Shuwan's words are certainly correct.

However, as a man who has been reborn from more than twenty years later, he is himself beyond common sense.

In fact, at the very beginning, when it came to improving the J-7, Chang Haonan's first thought was naturally the FC1 Thunder Dragon fighter derived from the "Super 7" plan of the magic change, and this aircraft could not see the shadow of the original model at all from the appearance.

But after seeing the real performance of computers in this era yesterday, he realized that without supercomputing resources, it is difficult to design the DSI inlet with an ordinary PC, let alone other parts of the body that have also changed a lot.

And at present, the best aviation engine that can be independently produced in China is the turbojet 13F, which is really not enough to promote a third-generation fighter.

There is no way, the rice has to be eaten one bite at a time, and scientific research has to be done step by step.

The development of the aviation industry is not an overnight process, and his current status is only an undergraduate, and the resources he can leverage are limited, and he cannot maximize the efficiency of the system.

At the same point in time in the previous life, Chang Haonan's ambition was indeed to design a model that could equip the People's Air Force to improve its combat effectiveness.

But now that he is living again, and even with the help of the system, this J-7 improvement plan is of greater significance to him as a stepping stone.

A stepping stone to a wider world.

Therefore, in addition to reflecting a certain degree of advancement, the design scheme must also be short and down-to-earth enough, which can be completed within the time specified in the course design assignment, and reflect the overall understanding of the development of the aviation industry.

Chang Haonan remembered that the teacher of his course was called Liu Hongbo, a very young professor, who was seconded to participate in the Y-7-200A shortly after the start of the next semester, that is, the airworthiness certification and technical improvement of the MA60 passenger aircraft.

The time came just after the end of their graduate student promotion and exemption process.

Therefore, many of Professor Liu's students have also been directly or indirectly involved in related work.

It's all opportunities.

And what Chang Haonan needs most now is precisely this kind of opportunity.

After determining the basic principles of the improvement plan, Zhang Man was the first to speak.

"Brother Nan, I just looked up some ideas for improving the MiG-21 or J-7 that already existed in the past in the library." Zhang Man said and put the schoolbag and cloth bag on the table, and then took out a large pile of materials.

"First of all, our country has already had an improvement program, replacing the large delta wing of the MiG-21 with a double delta wing, reducing the average chord length of the wing, increasing the spread-to-side ratio, and focusing on improving the aircraft's medium and low-altitude maneuverability, but because the air intake tract has not been improved, the head cone still does not have enough space to accommodate the radar, so let alone over-the-horizon, and even has all-weather combat capability."

Zhang Man flipped out a three-view of the J-7E and put it in front of Chang Haonan - after all, it was active equipment, and the detailed design drawings could not be obtained, and then secretly glanced at the latter's expression with his spare eyes.

After finding that there was no change, Zhang Man decisively pushed this drawing aside and took out another piece of information, which was much more detailed, and even had a lot of specific data.

"The second is the MiG Design Bureau's own improvements, that is, the MiG-21MF and MiG-21 Biss, which enlarge the fuselage with the same overall aerodynamic layout, increase the air intake head cone, and install a radar inside, but at the cost of a significant decrease in maneuverability."

"I think that's a good idea."

Zhou Shuwan propped himself up and looked at the drawings on the table.

"At the end of the 80s, we also designed a similar idea of the J-7C, but in the end only a dozen were produced, I think it can be improved on this basis, further increase the size of the head cone, plus the current radar technology is definitely stronger than back then, so it may even launch radar-guided air-to-air missiles like the Thunderbolt-4."

In 1996, the Thunderbolt 4 had already been dismounted, and the Thunderbolt 11 was still in the process of being imitated, but this did not stop the students of the University of Aeronautics and Astronautics from imagining a new, longer-range weapon.

However, Zhang Man next to him determined through Chang Haonan's expression that this was not the train of thought that the other party wanted when the latter was only halfway through speaking.

Therefore, as soon as Zhou Shuwan's words fell, she immediately expressed the opposite opinion: "I think this is not quite in line with the idea that Brother Nan just put forward, there are too few changes to the aircraft, and choosing this plan really looks down on our Brother Nan's ability." ”

And Zhou Shuwan, who was still on the rise just now, was directly denied by his goddess without leaving any face, and even pulled on the recognition of Chang Haonan's ability, so the whole person was directly embarrassed in place, looked at Zhang Man, and then looked at Chang Haonan who frowned slightly next to him.

Originally, when Zhang Man just took out a lot of information and began to sort out his thoughts, Chang Haonan's perception of her was actually greatly improved, not to mention whether it was useful, but at least people showed that they wanted to take the initiative to help you do things instead of standing by.

But her subsequent words and deeds quickly collapsed the positive image that she had finally established in Chang Haonan's heart.

You must know that although this big assignment is a group of four, not everyone in the group has the same score when grading, but will fluctuate on the basis of the group assignment grading according to the contribution of each member to the work.

Chang Haonan, who has been identified as a thigh, and Wu Yifan, who is ready to paddle and doesn't care about the results, are naturally at the top of the contribution ranking, so there is only room for discussion about who is second between Zhang Man and Zhou Shuwan.

Whether it's whiskers and horses, or eight-sided exquisiteness, this is all part of a person's ability, Chang Haonan himself is not good at this, but he will definitely not look down on people who are good at this, as for the relationship between Zhou Shuwan and Zhang Man, it has nothing to do with him as an outsider.

But while Zhang Man just greeted him by observing words and feelings, he didn't forget to secretly poke and poke on Zhou Shu's feet, this nature is different.

If Chang Haonan directly agreed with Zhang Man's idea at this time, it would be equivalent to being used as a gunman by the latter.

It is true that Zhou Shuwan is an honest person, but an honest person can't be bullied like this.

This is an impact on unity.