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

In addition to the official acquisition of the 973 project expert group members and the general consultant of the Seiko plan, the only thing worth mentioning is that the textbook he co-edited with Liu Hongbo has been proofread and handed over to the publishing house for printing.

However, this does not require Chang Haonan to do anything, so during this time, in addition to comforting his sister Chang Jiayao, who is anxious because of the approaching college entrance examination, the most important thing is to write a proposal report on the project in the second half of the year-

That's right, in the 90s, the college entrance examination was held in early July, and it was not until 2003 that it was changed to the beginning of June, which was later familiarized.

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

First, in sync with the No. 10 project and the No. 11 project, the overall design of the turbofan 10 "Taihang" engine was officially started.

Although the project 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 and stumble forward, and the former is completely a rootless tree and a sourceless water.

In short, almost ten years have passed now, and although I have made several versions of the design, they are all to the extent that they are not very reliable on paper.

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

Fortunately, I didn't spend much money, 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 and perfecting the turbojet 14 in the past year, and the level of national economic development has made great progress compared with ten years ago.

On the other hand, China's progress of two third-generation fighters, one light and one heavy, has exceeded expectations, J-10 has completed the ground engine start test, the second half of the year is basically determined to be able to make the first flight, two by the 112 factory for final assembly of the J-11 fighter was originally expected to be completed by the end of the year, but from the current progress, it can be about three to four months in advance.

Although it seems that there is no possibility of AL31F/FN being cut off, the Rurika-Salyut side has also refused to transfer engine technology, and it is not always a solution for the core power of domestic third-generation aircraft to rely on foreign countries for a long time.

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

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

For example, full 3D digital collaborative design and numerical simulation, a new generation of active cooling technology, single crystal material development and casting, superalloy ......

Well......

I don't know if it's not a column, it's all a problem.

But this is also no way, it is difficult to pass the pass.

Fortunately, not all of these things need to be solved by Chang Haonan himself.

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

"Although it is a little more reasonable than the situation in the previous life to divide the military and civilian groups into one group and two groups, it is not very reasonable......

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

If you want to really pay attention to Hangfa, it is better to do it in one step and directly split Huaxia Aero Engine Group in advance to be responsible for the research and development and manufacturing of aviation power.

This is also the aviation system before Chang Haonan's rebirth, and it is also the method adopted by foreign mainstream aviation industry powers.

After all, there is a big difference between aircraft design and aviation development design, and Chang Haonan can switch seamlessly because he is hanging, which does not mean that other practitioners also need to do the same.

"I can still refine this idea later......"

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

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

The basic research topics related to it can be directly placed in the framework of the 973 plan, and then the results can be connected to the Seiko plan.

It just so happens that he can talk on both sides alone.

In fact, in the production process of the No. 10 prototype of Project 1001, Factory 132 has changed the open forging process commonly used in the Huaxia aviation industry in the past to the die forging process.

The fuselage frame of the J-11 is still provided by the Russian side, but at the celebration of the three doors before, the 601 Institute has said that they and Sukhoi have determined the improvement idea of replacing the original tailored welding method with die forging, which can shorten a lot of production hours and reduce some weight for the originally overweight body.

However, the J-10, the maximum take-off weight of 20 tons, is basically the limit for the existing 30,000-ton die forging press in China, whether it is the J-11, or the future domestic passenger aircraft, or the 700MW hydropower unit mentioned by Jin Gui on the train, it is obvious that a larger model is needed.

Since these things had been turning countless times in Chang Haonan's mind, his thoughts had been like a spring, until he was about to write about the key technology with reference to the format of the above letter, and he finally got stuck.

The first requirement directly involved in the heavy-duty die forging press was the multiphysics simulation modeling software.

But that's okay, as long as you pull the investment in, it won't take too long to get a first version out.

The key is that Chang Haonan does not have enough information at hand.

According to Jin Gui earlier, Qinghua University developed a 68,000-ton heavy-duty die forging press about a decade ago.

If you want to finish the project as quickly as possible, then it is obviously much faster to build on this than to start from scratch.

Although 68,000 tons is not the largest in the world, it is definitely enough for now.

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

Besides, the 80,000-ton one in the previous life will be made sooner or later.

It's just that Chang Haonan doesn't know how complete the design of the die forging press is, and what kind of technical route is adopted.

Qinghua University is not a university in the system of the Commission of Science, Technology and Industry for National Defense, and the only intersection between Chang Haonan and that side is Wei Yongming, who has had a relationship before, but the latter is only a master's student now, and he should still be on a business trip in Shengjing, so I am afraid it won't help much.

With his current title, it's okay to send a letter to inquire through official channels, but it's too slow.

Thinking of this, Chang Haonan screwed the lid of the pen in his hand and made a phone call to Du Yishan.

The latter, as a senior academician, should always have acquaintances in Qinghua.

I opened an activity in the book review area to participate in posting to win starting coins, although it is a mosquito leg, but everyone can still participate, it seems that there are few people at present, almost click to send ......

(End of chapter)