It stands to reason that as one of the main responsible persons, it is really not like a word to let an outsider meddle in his own project like this, and the idea of building two versions of the prototype sounds a bit crazy at first glance.

However, as Chang Haonan just said, the first version of the design can actually verify the overall and most of the subsystems of the aircraft, the second version only needs to check and fill in the gaps, and will not cause much waste, and the final complete version of the aircraft if it can really achieve active stability control as Chang Haonan said, the benefits are not half a star......

Yang Wei admitted that he was a little uncompetitive.

Seeing him bowing his head and contemplating, Chang Haonan knew in his heart that this was a manifestation of a person in a tangle.

Therefore, he filled the balance in the other party's heart with a heavy chip.

"Regarding the design of the second version of the No. 10 project, in fact, I had contact with the comrades on the Guihang side once at the beginning of this year."

Sure enough, topics related to the project quickly aroused Yang Wei's interest, and he raised his head and looked at Chang Haonan with some confusion.

Guihang is a brother unit supported by the 611 Institute and the 132 Factory in Rongcheng, and he is naturally more familiar with it, but so far it has been able to produce some two-seater Jianjiao 7, and it is not possible to meddle in the No. 10 project in terms of design and production capacity.

"At that time, they wanted to develop a new generation of advanced training aircraft on the basis of the Jianjiao 7, and I gave some support in terms of overall scheme and simulation technology, if nothing else, after the basic design came out, I was ready to make an attempt on the application of DSI inlet on this project."

After entering the 90s, the aviation industry has painfully reflected on the lessons learned from the previous two or three decades, and summed up a set of relatively low-cost and low-risk technology verification models.

Except for particularly critical and special technologies such as digital fly-by-wire that require the J-8IIACT to be verified, most of the new technologies can be verified in the development process of existing models in small steps to share the risk.

In the previous life, this principle was not well implemented due to a series of technical development and organizational management reasons.

There is no way, there are too few projects, and the development progress is slow, so we can only seek to complete the work in one battle.

For example, the J-10 has been forced to concentrate on the application of more than 60% of new technologies, which is actually quite risky.

But now, because of Chang Haonan's role, the 83 project has been successfully finalized, and more importantly, the development of aviation technology has been straightened out, so that this principle can finally be carried forward.

Including the J-10, which has just completed the final assembly and has not yet made its first flight, subsystems and technologies such as radar, power supply, and integrated front windshield have been verified in advance on the J-8C.

Therefore, although the emergence of Chang Haonan has greatly accelerated the development of Huaxia technology, especially aviation technology, it has not only not led to unstable foundations, but has also reduced the risks of many projects on this timeline.

And Chang Haonan is now talking about applying DSI inlet technology on an advanced training aircraft that has little difficulty in development, obviously to prepare for the second version of the design of Project 10.

"DSI Inlet ......"

This term made Yang Wei stunned for a moment, and then reacted:

"Oh, you're talking about the convex hull intake, right?"

In the early 90s, it was difficult for Huaxia to systematically track the international cutting-edge aviation technology, so there was a lack of a unified idiomatic translation of these new terms.

Chang Haonan nodded:

"Yes, both translations mean the same thing."

"This is a highly discussed design in the past two years, and the research in the United States has just begun, and an F16 was specially changed to verify this thing."

Although no relevant projects have been launched in China, it is naturally impossible for people like Yang Wei to smear this:

"It's said that JSF, another fourth-generation aircraft they're working on right now, plans to apply this technology, you ...... Are you sure you can get ahead of the Americans? And the improved version of the Jianjiao 7, if you have a nose air intake, how are you going to install the convex hull, uh, that is, the DSI air intake? ”

"Of course, it's not the nose air intake, when I communicated with the comrades of the 648 Institute before, I have changed the overall plan to the double air inlet design of the subcostal part."

Seeing that the other party had shown strong interest, Chang Haonan shook his head and continued to explain:

"DSI air inlet uses the principle of wave riding and the characteristics of the cone flow itself, relying on the pressure gradient of the compressed surface surface to blow out the surface layer of the fuselage, so that there is no need to attach the surface layer partition, the discharge system, the bypass system several parts, compared with the ordinary air inlet is lighter, the radar reflection area is also smaller, as long as the design is appropriate, the performance will inevitably have a great improvement."

"The only problem is that this air inlet is completely fixed, so the optimization interval is relatively narrow, but considering that the aviation unit does not need Project 10 to undertake any high-altitude and high-speed interception tasks, it only needs to choose the transonic speed range of Mach 0.7-1.5 for optimization......"

This is also another benefit brought by the successful finalization and service of the J-8C.

There is no need for the J-10 to do everything, as long as it is responsible for the best part of a normal third-generation aircraft.

"However, this kind of thing, just on paper analysis is not very convincing, after all, the No. 10 project is this new advanced training aircraft project, I am ready to take it as our Huaxia F16ICON, in order to meet the needs of aviation training at the same time, it can also be regarded as a technical verification for the follow-up improvement design of the No. 10 project."

Historically, the verification of the DSI air intake was originally done on the Thunder, but at present, the Pakistani Air Force seems to be very satisfied with the J-7F, which is likely to have some impact on the advancement of the follow-up Thunder project.

And even if all goes well, it will not be until 1998 that the two countries complete the technical and tactical negotiations and finally move the project to the development stage.

In any case, Chang Haonan couldn't wait for a year, so he had to give full play to his subjective initiative and pull a project to verify it himself.

Hearing this, Yang Wei, who was sitting opposite, finally suddenly realized-

Oh, no wonder the boy just said that he was going to overhaul it, and even the form of the air inlet designed for the second version has been selected for us......

You've got it all, right?

In the end, I am Party A, are you Party A?

However, although there is a suspicion of overstepping the bounds, Party B, who originally only invited to assist in the structural and aerodynamic analysis before the first flight, actually sent two such gift packages, and they are the most urgently needed parts of the J-10 as a medium-sized single-engine fighter - reliability upgrades, engine envelope expansion and weight reduction.

It's hard to refuse.

After a battle between heaven and man, he decided to forget about his dignity as a party for a while.

"Well, what do we need 611 to do? I mean, about all that you just said, Active Stability Control, and the DSI intake. ”

Yang Wei pressed the tip of the ballpoint pen back and opened the notebook.

"Step by step, the DSI intake thing can be a little bit back."

Regarding the follow-up plan, Chang Haonan has already made a draft:

"Both the instability prediction system and the stability management system need a lot of data support, and I plan to complete the relevant algorithm and control rate design in one to two months, and it is impossible to always run at both ends, so now I need you to send a few people who are familiar with the overall design of Project 10, especially the Feifa matching design, to assist me."

"For how long?"

Even though Yang Wei thought that he was used to the rebellion of the guy in front of him, what he heard in his ears still made him feel a little unbelievable.

"One to two months."

When he was on the side of the 83 Project before, Chang Haonan was already used to dealing with this kind of scene:

"This will allow you to integrate the system into the flight control without delaying your progress before the ground testing of the engine begins."

The reason why Chang Haonan is in such a hurry is because as a reborn person, he knew through later decryption that the reason why the J-10 prototype No. 01 took more than a year from the production line to the first flight was not because of the widely circulated three drops of oil (the overhaul after the discovery of the three drops of oil only took about ten days), but because there were two blade damage problems during the ground test process, which took a lot of man-hours to repair, and finally passed by adjusting some details of the air intake.

If this incident can be avoided, the first flight of the J-10 can actually be advanced to the second half of 97.

Of course, he can also go to the 611 Institute and find a way to improve the relevant design in advance.

But it also takes a lot of time.

In contrast, it is better to make this active stability control system in advance to avoid those two blade damages.

In this way, it will not delay much time, and the designers of the 611 Institute can find and solve the problem by themselves.

After all, there are some things in the field of engineering that you can only experience if you miss them.

And today's Chang Haonan is no longer like when he first joined the 83 Project, he needs to provide himself with enough prestige through several successful problem analysis and improved design.

The name is placed there, and it is enough.

For example, today, he just made a PPT, combined with a simple description, which is enough for 611 to take his suggestions into account.

……

Of course, Yang Wei doesn't know what will happen to the J-10 in future tests, but he knows very well that the system developed by Chang Haonan can provide huge margin for error.

In the worst-case scenario, it could even give the entire project a chance to come back to life.

For this reason, even if the test schedule is delayed by a few months, it is not a loss.

And now, the other party actually said that there is no need to delay time at all......

"So be it."

Zhenxiang This kind of thing, once it happens for the first time, there will be no psychological burden for the second time, so Yang Wei quickly made a decision,

"The overall design of Project No. 10, of course, is the most familiar with Mr. Song, but he has to stay in Rongcheng to be responsible for the general manager, and the next thing is me."

"How about I stay here and be your deputy?"

It's all for Project No. 10, what Party A and Party B, narrow-minded!

(End of chapter)