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

The next ten days were a rare and relaxing time for Chang Haonan.

In addition to officially receiving the two titles of being a member of the 973 project expert group and the general consultant of the Seiko Project, which are well-prepared and well-paid, the only thing worth mentioning is that the textbook co-edited by him and Liu Hongbo has been proofread and delivered to the publishing house for printing. .

However, this does not require Chang Haonan to do anything, so during this period, in addition to comforting his younger sister Chang Jiayao who is anxious about the college entrance examination every day, the most important thing he does is to write a report on suggestions for the project in the second half of the year——

That's right, in the 90s, the college entrance examination was held in early July. It was not until 7 that it was changed to the beginning of June, which people later became familiar with.

As for the recommendations for the second half of the year, there are two main contents in the report.

First, in synchronization with the No. 10 and No. projects, the overall design of the turbofan "Taihang" engine was officially started.

Although the establishment of the third-generation high-thrust turbofan engine is almost the same as that of the turbojet 14, the latter can still rely on some references to advance stumblingly, while the former is completely like a tree without roots and water without a source.

In short, it has been almost ten years now. Although I have done several designs, they are all unreliable on paper.

The aviation industry and the 606th Institute naturally know their own level, so they have been focusing most of their energy on the less difficult turbojet 14. The few members who are focused on the turbofan 10 also conduct technical pre-research and track cutting-edge research. Lord.

Fortunately, it didn’t cost much, so it wasn’t a loss.

Now, the engineers of the 606 Institute have accumulated a lot of experience and data in the process of improving the turbojet 14 in the past year. The level of national economic development has also made great progress compared with ten years ago. In addition, Chang Haonan Its own capabilities are not the same as a year ago, and it can be said that it has the foundation to officially start the development of the turbofan 10 engine.

On the other hand, the progress of my country's two third-generation fighter jets, one light and one heavy, has exceeded expectations. The J-10 has completed the ground engine start-up test and is basically certain to be able to make its first flight in the second half of the year. The two J-112 fighter jets that will be assembled by the 11 Factory were originally expected to It will be completed and rolled out by the end of the year, but judging from the current progress, it can probably be completed three to four months ahead of schedule.

Although it seems that there is no possibility of the supply of AL31F/FN being cut off at present, Liulika-Salyut has always refused to transfer engine technology. It is always not an option to rely on foreign countries for the core power of domestic third-generation aircraft for a long time.

Therefore, no matter in terms of conditions or needs, it is imperative to develop a new generation of turbofan engines!

At the end of the first report, he also listed some related key technologies.

For example, full three-dimensional digital collaborative design and numerical simulation, new generation active cooling technology, single crystal material development and casting, high-temperature alloys...

Ok……

If you don’t list it, you don’t know. If you list it, it’s all a problem.

But there's nothing we can do about it. It's hard to get through it.

Fortunately, not all of these things require Chang Haonan to solve them himself.

Writing this, Chang Haonan suddenly remembered the solicitation letter he saw this morning.

"Although it is a little more reasonable to divide military and civilian use into the first group and the second group than in the previous life, it is not much more reasonable..."

He stopped writing and began to think about issues related to the reform of the aviation industry.

If we want to really attach importance to aviation power, it would be better to do it in one step and directly split off China Aero Engine Group in advance and be responsible for the research, development and manufacturing of aviation power.

This was also the aviation system before Chang Haonan was reborn, and it was also the method adopted by the mainstream foreign aviation industry powers.

After all, there is a big difference between aircraft design and aviation engine design. Chang Haonan was able to switch seamlessly because he was cheating. It does not mean that other practitioners need to do the same.

"This idea can still be improved later..."

Chang Haonan pulled a piece of paper from the table, wrote this idea on it, and then continued to write a second proposal.

The content is about the heavy-duty die forging press that Chang Haonan has been considering since the Chinese New Year.

Related basic research topics can be directly placed within the framework of the 973 Project, and then the results can be linked to the Seiko Project.

It just so happened that he could talk to both sides by himself.

In fact, during the production of the fuselage of the No. 1001 prototype of Project 132, Factory has changed the free forging process commonly used by the Chinese aviation industry in the past to the die forging process.

The body frame of the J-11 is still provided by Russia. However, at the celebration meeting of the three gates, the 601 Research Institute already stated that they and Sukhoi have determined the improvement of replacing the original tailor welding method with die forging. The idea is that this can shorten a lot of production hours and also reduce some weight from the originally overweight body.

But the body of the J-10 with a maximum take-off weight of 20 tons is basically the limit for the existing 11-ton die forging press in China. Whether it is the J-700, or a future domestic passenger aircraft, or what Jin Gui on the train mentioned MW hydropower units obviously require larger models.

Since these things have been going back and forth in Chang Haonan's mind countless times, his ideas have been flowing like a fountain. It was only when he was preparing to write about key technologies according to the format of the previous letter that he finally got stuck.

The first requirement directly related to the heavy-duty die forging press is the multi-physics simulation modeling software.

But that's okay. As long as the investment is raised, it won't take long to get the first version out.

The key is that Chang Haonan doesn't have enough information at hand.

According to Jin Gui’s previous statement, Qinghua University developed a 6.8-ton heavy-duty die forging press about ten years ago.

If you look at it from the perspective of completing the project as quickly as possible, then it's obviously much quicker to build on that than to start from scratch.

Although 6.8 tons is not the largest in the world, it is definitely enough for now.

The temptation to put it into production a few years earlier is obviously much greater than a title.

Besides, the 8-ton one in the previous life will be built sooner or later.

But Chang Haonan didn't know how complete the design of that die forging press was and what kind of technical route it adopted.

Qinghua University is not a university within the system of the Commission for Defense Science, Technology and Industry for National Defense. Chang Haonan's only interaction there currently is Wei Yongming, who he had a relationship with before, but the latter is only a master's student now, and he should still be in Shengjing. Being on a business trip, I'm afraid I can't be of much help.

With his current title, it would be okay to send a letter to inquire through official channels, but the speed would be too slow.

Thinking of this, Chang Haonan screwed on the cap of the pen in his hand and called Du Yishan.

As a senior academician, the latter should have some acquaintances in Qinghua.

I have launched an activity in the book review area to win some points by participating in posts. Although it is a mosquito leg, everyone can still participate. It seems that there are not many people so far. It is almost a click to win...