At the same time, the master and apprentice had already settled dinner in Jinjude and sat on the special bus back to Jinghang University.

"Xiao Chang, according to the current progress, the J-8C should soon be able to complete the design finalization, do you have any ideas for 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 things at work can naturally be discussed in the car.

"I think the experience of participating in the 83 Project during this period is very good, which can not only ensure the freedom of research direction to a certain extent, but also deeply participate in the process of project development, so it is best to continue with this model."

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

"I guessed you'd choose that."

Du Yishan smiled and continued:

"During the period since I came back from Nanzheng, the 611 Institute has asked many times openly and secretly, saying that I want you to go over to help their new model do the flying hair matching work, I don't know what your personal opinion is?"

"In addition, this time Rongcheng said that it would apply for horizontal projects for us, and it would be more free in the use of funds."

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

The so-called horizontal project is actually a research project signed directly between enterprises and university research groups, without going through ministries, local governments or other state agencies, so the management will be much looser.

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

There is certainly no such item in the general funding for vertical projects.

Although there are various ways to set up a name, it is not as comfortable as holding the money that is justified.

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

But in fact, these details were originally agreed by Chang Haonan to Lu Yuying on Xiangzhou's side, so they didn't surprise him.

"Of course, it's no problem to do the 611 project, their J-7F is now considering changing to a turbojet 14, and our country's independent third-generation aircraft No. 10 project is also being carried out there, it is better to say that this is also my own next plan."

"In that case, I'll give a definite answer to 611 tomorrow." Du Yishan said and raised his watch and looked at the date:

"Today is December 16th, and if everything goes well, the design finalization appraisal may be placed around New Year's Day, so that you can consider waiting until after the Spring Festival to join the work of 611 directly."

However, Chang Haonan shook his head:

"There's no need to wait until after the Spring Festival, I can start working as soon as I return to Shengjing."

"In the past, we were limited by objective conditions and could only focus on the aircraft, but this time, I am ready to change my thinking and try to focus on the design of the aircraft."

"So even if it is a project for 611, I plan to go to Shengjing to follow up on the situation of Hangfa first, after all, our second-generation power turbojet 14 and third-generation power turbofan 10 are all in charge of the 606 Institute and the 410 factory."

"Turbofan 10......"

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

"Do you think with the current progress of Project 10, is there any hope that Turbofan 10 will catch up with the first flight?"

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

However, with the current level of aviation power in Huaxia, even the research and development of a turbojet with a thrust-to-weight ratio of 6.5 has highlighted a stumble, and in the end, Chang Haonan saved the scene with an external plug-in, not to mention the high-thrust turbofan that is expected to thrust at the 7.5-8 level.

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

Basically, there's no progress.

Chang Haonan was able to change the turbojet 14 in a few months, in addition to the system as the backing, the more important reason is that this model itself has a high degree of completion, he only needs to modify it on the basis of the original design.

And the vortex 14 has relatively low requirements for materials and manufacturing, as long as he comes up with a good enough design scheme, even if the 410 factory is a little less efficient, it can still make the things on the drawings after all.

But the turbofan 10 is a different story entirely.

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

It's December 1996, and the prototype No. 31 with the AL-01FN engine is actually close to rolling off the assembly line.

Even if it is open, Chang Haonan will not be able to make a new third-generation big push from scratch in 14 months.

Frankly speaking, even if he wanted to actually start designing the turbofan 10 in 14 months, it would be quite difficult -

When Taihang Engine was established, there was a serious lack of pre-research.

To put it bluntly, it means that it is a little bit big.

As a result, although the project is on the table, a lot of the preparatory work has not yet been completed.

So Chang Haonan shook his head very simply:

"I heard that the progress of the No. 10 project on the 611 Institute is quite smooth, and the turbofan 10 has to start from scratch after all, and it is probably impossible to catch the first flight."

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

"But like the J-8C, the first flight will be carried out in an incomplete state, and then the new domestic power will be installed and the air intake design will be adjusted to catch up with the finalization node, which I think is still promising."

"The AL31FN engine is still passable in terms of overall performance, but in any case, after all, it is the design of the Russian side, and it is impossible for the Salyut Design Bureau to adjust it according to our needs, or to customize the performance details of the engine, so that it will be almost interesting when doing the flying hair matching work."

This answer is obviously a bit unexpected by Du Yishan, especially the paragraph about letting the turbofan 10 go to the J-10 design finalization node:

"Tell us about your specific plans?"

Chang Haonan didn't give his answer immediately, but lowered his head and thought for about a few minutes:

"First of all, the high-thrust turbofan is still too far for our current aero-engine research level, I can feel it when I changed the turbojet 14 before, the current design ideas, design tools, material level and process level are not enough, so this time back to Shengjing, the focus must be on the turbojet 14, J-7F is a single-engine after all, the requirements for aviation are somewhat different from J-8C, and some parameters need to be fine-tuned."

"In addition, the 606 Institute and the 410 factory can accumulate some experience in the production and improvement process of the turbojet 14, including myself, and I also need to further improve the understanding of aerodynamics, which can be regarded as technical preparation for the Taihang project."

"So after the J-7F is done with the flight matching work, I should first participate in the preparation for the first flight of the No. 10 project, just when I was studying the stability of the aviation engine in Fucheng before, I used the same idea as wing flutter control, and conceived a set of active engine surge prediction and suppression system, which can take this opportunity to actually test the feasibility."

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

For a moment, he began to worry that his gifted student would be a little drifting because of his experience in the 83 Project.

However, judging from the plan Chang Haonan made for himself, he still maintains a calm and objective estimate of himself and the level of the aviation industry in China as a whole.

It's really unfounded.

"Then go according to your plan."

(End of chapter)