The military-industrial scientific research system of the academic master.

At the same time, the master and the apprentice had already finished dinner in Jinjude and sat on the special car returning to Beijing Hang University.

"Xiao Chang, according to the current progress, the J-8C should be able to complete the design and finalization soon. Do you have any ideas about the future research direction?"

After the car started, Du Yishan asked Chang Haonan next to him.

The drivers who can drive for Du Yishan are also specially arranged, and work matters can naturally be discussed in the car.

"I think the experience of participating in the 83rd Project during this period is very good. It can not only ensure a certain degree of freedom in research directions, but also deeply participate in the project development process, so it is best to continue using this model. Go down."

Chang Haonan almost immediately gave the answer he had thought of for a long time.

"I guessed you would choose this way."

Du Yishan smiled and continued:

"During the time after I came back from Nanzheng, the 611 Institute asked me many times, both overtly and covertly, saying that they wanted you to come over and help them match their new models. What do you think? "

"In addition, this time Chengdu said that they would apply for horizontal projects for us, and we would have more freedom in the use of funds."

This sentence is not very clear, but Chang Haonan can naturally understand it.

The so-called horizontal projects are actually research projects signed directly between enterprises and university research groups, without going through ministries, local governments or other national agencies, so management will be much easier.

For example, according to the regulations of some schools, up to 30%-50% of the horizontal funds can be directly allocated as "project team commission", and the remaining balance can be used as project research funds.

This item is definitely not included in the general vertical project funds.

Although there are various ways to create clever names, after all, they are not as comfortable as holding just money.

Du Yishan's emphasis on horizontal subjects was obviously to express the sincerity of the 611 Institute.

But in fact, these details were originally agreed upon by Chang Haonan with Lu Yuying in Xiangzhou, so they did not surprise him.

"Of course it's no problem to do the 611 project. Their J-7F is now considering replacing it with a turbojet 14, and our country's No. independent third-generation aircraft is also being developed there. Rather, this is my next plan. .”

"In that case, I will give a definite reply to 611 tomorrow." Du Yishan said as he raised his watch and looked at the date:

"Today is December 12th. If everything goes well, the design finalization appraisal may be scheduled around New Year's Day, so you can consider waiting until after the Spring Festival to directly join the work of 16."

However, Chang Haonan shook his head:

"There is no need to wait until after the Spring Festival. I can start working immediately after returning to Shengjing."

"In the past, we were limited by objective conditions and could only focus on the aircraft engine matching. But this time, I am going to change my mind and try to design with the aviation engine as the center."

“所以就算是给611所做项目，我也打算先去盛京那边跟进一下航发的情况，毕竟咱们的二代动力涡喷14还有三代动力涡扇10都是606所和410厂在负责。”

"Turbofan 10..."

Du Yishan took off his glasses, took out a piece of suede and gently wiped the lenses, then put them back on:

"Do you think based on the current progress of Project 10, there is still hope for Turbofan to catch up with its first flight?"

In terms of project establishment time, the turbofan 10, known as the "Taihang", is actually not much later than the turbojet 14.

However, with China's current level of aviation power, even the development of a turbojet with a thrust-to-weight ratio of 6.5 is a stumbling block. In the end, it was Chang Haonan who came to the rescue with a plug-in, let alone one that is expected to have a thrust-to-weight ratio of 7.5-8. A high-thrust turbofan.

So what is the current progress of this project...

Basically there is no progress.

Chang Haonan was able to modify the Turbojet 14 in a few months. In addition to the system as a backing, the more important reason is that the model itself has a high degree of completion. He only needs to build on the original design. Just modify it.

Moreover, the requirements for materials and manufacturing of the Turbojet 14 are relatively low. As long as he comes up with a good enough design plan, even if the 410 factory is a little less efficient, he can still build what is on the drawing.

But Turbofan 10 is a different story entirely.

According to the original timeline, the J-10 would make its first flight in March 1998.

It is now December 1996, and the No. 12 prototype equipped with the AL-31FN engine is actually close to rolling off the assembly line.

Even if it is turned on, Chang Haonan cannot build a brand new third-generation model from scratch in 14 months.

Frankly speaking, even if he wanted to actually start the design work on the turbofan 14 within 10 months, it would be quite difficult——

When the Taihang Engine project was established, there was a serious lack of preliminary research.

To put it bluntly, it means doing something big and getting started quickly.

This results in that although the project is on the table, many preliminary preparations have not yet been completed.

So Chang Haonan shook his head very simply:

"I heard that the progress of Project 611 at the 10 Institute is pretty smooth. After all, Turbofan has to start from scratch. It is probably impossible to catch the first flight."

But before Du Yishan could answer the question, the conversation changed again:

"But just like the J-8C, it will first fly in an incomplete state, and then install new domestic power and adjust the inlet design to catch up with the finalization node. I think there is still hope."

"The overall performance of the AL31FN engine is acceptable, but in any case, it is a Russian design after all. It is impossible for the Salyut Design Bureau to adjust according to our needs, or to customize the performance details of the engine. After all, it’s almost boring when you send out matching jobs.”

This answer was obviously beyond Du Yishan's expectations, especially the part about letting the Turbofan 10 catch up with the J-10 design finalization node:

"Tell me about your specific plan?"

Chang Haonan did not give his answer immediately, but lowered his head and thought for a few minutes:

"First of all, high-thrust turbofans are still too far ahead of our current aero-engine research level. I could feel it when I modified the turbojet 14 before. The current design ideas, design tools, material levels, and process levels are all It’s not enough, so when I return to Shengjing this time, the focus must still be on the turbojet 14. The J-7F is a single-engine aircraft after all, and its aviation engine requirements are somewhat different from those of the J-8C, so some parameters need to be fine-tuned.”

"In addition, both the 606th Institute and the 410th Factory can accumulate some experience in the production and improvement process of the turbojet 14. Including myself, we also need to further improve our understanding of aviation power. This can also be regarded as technical preparation for the Taihang project."

"So after completing the flight engine matching work for the J-7F, I should first participate in the preparations for the first flight of Project No. . Just when I was studying the stability of the flight engine in Fucheng, I used to follow the wing flutter. With the same idea of ​​​​control, we have conceived an active engine surge prediction and suppression system, and we can take this opportunity to actually test the feasibility."

After hearing this answer, Du Yishan secretly breathed a sigh of relief.

For a moment, he began to worry that he, a talented student, might be drifting because his experience in the 83rd Project was too smooth.

But judging from the plans Chang Haonan made for himself, he still maintains a calm and objective assessment of himself and the level of China's aviation industry as a whole.

It is really unfounded.

"Then follow your plan."