Chapter 330 As a member of the 973 Project expert group, it is reasonable to make some suggestions, right?
The next ten days will be 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 team and the general consultant of the Seiko Project, which are well-prepared and well-paid, the only thing worth mentioning is that the textbook he and Liu Hongbo co-edited has been completed. Proofed and sent to the publishing house for printing.
But this does not require Chang Haonan to do anything, so during this period, apart from 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 about the projects in the second half of the year. Suggestion report——
Yes, in the 1990s, 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 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. 11 projects, the overall design of the turbofan 10 "Taihang" engine was officially started.
Although the third-generation high-thrust turbofan engine project is almost the same as the turbojet 14, the latter can still rely on some references to advance stumblingly, while the former is completely 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 606 Research 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 are focused on the turbofan 10 have also carried out technical research. Mainly pre-research and follow-up cutting-edge research.
Fortunately, it didn’t cost much, so it wasn’t a loss.
Now, the engineers of the 606 Institute have accumulated considerable experience and data in the process of improving the turbojet 14 in the past year, and the level of national economic development has also made great progress compared to ten years ago. , coupled with the fact that Chang Haonan's own capabilities are not the same as a year ago, it can be said that he 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 will be assembled by the 112 Factory The J-11 fighter jet was originally expected to be completed and rolled off the production line by the end of the year, but judging from the current progress, it can probably be completed three to four months earlier.
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...
Hmm...
Not listed I don’t know, there are all questions in one column.
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 and second groups than in the previous life, it is not much more reasonable...”
He stopped writing and began to think about the aviation industry. issues related to reform.
If we want to really pay attention to aviation power, it would be better to do it in one step and directly separate the 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 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.
In fact, during the production process of the fuselage of the No. 1001 prototype of Project 10, Factory 132 has changed the free forging process commonly used by the Chinese aviation industry in the past to the die forging process.
The body bulkhead of the J-11 is still provided by Russia. However, at the celebration party of the three gates, the 601 Institute had already stated that they and Sukhoi had determined the original tailor welding method. Switching to the improvement idea of die forging, this can shorten a lot of production hours, and also reduce some weight of 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 30,000-ton die forging press in China. Whether it is the J-11, or a future domestic passenger aircraft, or the one on the train The 700MW hydropower units mentioned by Wei Jingui 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 this is not bad. As long as the investment is raised, it will not take too long to get the first version out.
The key is that Chang Haonan does not have enough information at hand.
According to Jin Gui’s previous statement, Qinghua University developed a 68,000-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 68,000 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 80,000-ton one in the previous life will be built sooner or later.
It’s just that 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 is okay to send a letter to inquire through official channels, but the speed is 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 opened an activity in the book review area to participate in posting to win some coins. 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...
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(End of this chapter)