After a thousand years of trading, start a million barrels of oil

Chapter 213 Project Approval
It has been confirmed in the previous chat with Mr. Xu and Mr. Chen that the higher-ups will fully support Jiang Fan's work, and will hand over the AVIC Development Research Institute to Jiang Fan for unified dispatch and command.

AVIC Research Institute is the most authoritative institution for engine research in China, including:
Aviation Development Shenyang Engine Design Institute (code: 606);
Hangfa Zhuzhou Power Machinery Research Institute (Code: 608);
Hangfa Sichuan Gas Turbine Research Institute (Code: 624);
Hangfa Guiyang Engine Design Institute (code: 649);
Hangfa Imperial Aeronautical Materials Research Institute (Code: 621);
These five units, as can be seen from their names, include all the main links in the research and development of aero-engines, and they are considered elite.

Jiang Fan also included his own Fan laboratory, and worked with the Imperial Aeronautical Materials Research Institute to accelerate the development of the thermal insulation material 'Xingyan'.

Because young people's information on aviation development thousands of years ago was destroyed in the artificial intelligence disaster, it is naturally impossible to make knowledge patches on this aspect. Jiang Fan first talked to the director of the China Aviation Development Research Institute, probably Learn about the current state of aviation.

The dean also gave Jiang Fan an answer: "From the perspective of research and development, Aviation Development is mainly large aircraft engines and fighter jet engines. Most of them are turbofan engines. Among them, large aircraft engines are large bypass ratio engines with lower fuel consumption. For low-altitude and low-speed flight, it is more suitable for passenger aircraft or transport aircraft.

The fighter jet engine is a small bypass ratio engine, which consumes fuel, but it is suitable for high-altitude and high-speed flight, so it is more suitable for fighter jets.

Among all the research and development costs of aviation projects, the research and development costs of engines account for 1/4, so this is a crucial piece, and it is not something that you can develop with the cost.

The development of the engine is very difficult, not to mention anything else, just the technology, such a small space, tens of thousands of parts, the machining accuracy reaches the micron or even nanometer level, and the technical principle is zero fault tolerance, this alone is worthy of the name The ultimate challenge of engineering science.

Of course, the difficulty is far more than this. A civil engine needs to work stably for 3 hours without any failure, which requires very high safety and stability.

Moreover, the speed of the turbine is very fast, reaching a speed of 1 to [-] per minute. The centrifugal force of the rotating blade is equivalent to [-] times that of the blade itself, and at this time the engine blade is at extremely high temperature. It is running, which has extremely high requirements for the blade material.

In addition, its internal temperature is very high, exceeding 1700 degrees or even higher, so the cooling system and heat insulation materials need to be able to ensure that it does not appear deformation and other failures under long-term conditions of tens of thousands of hours.

All kinds of difficulties are concentrated in the interior of the aero-engine, which is not particularly large in size. Its difficulty can be imagined, and it is no wonder that it is called "the jewel in the crown of industry". "

After talking about the difficulty of aviation development, the dean also talked about our current situation: "For fighter jets, our current J20 is equipped with turbofan 10, which is Taihang engine, with a thrust of 12 to 14 tons, and our newly developed turbofan Fan 15, also called Emei engine, is expected to have a thrust of 16 to 18 tons.

But compared to the other side, others are already equipped with the F35 turbofan engine of the F135, with a maximum thrust of 25 tons, so there is still a big gap from others.

Civil aviation’s large aircraft engines are even worse. Our best Changjiang-1000 large aircraft engine has a thrust of about 13 to 14 tons, while others’ GE9X has reached a thrust of 61 tons. The difference is four or five times, and the task is heavy. And the way is far. "

"Is there a way to reverse it?" Jiang Fan asked, reverse engineering is what we are best at.

The dean shook his head: "It's difficult, we can know the principle and structure of the engine through reverse engineering, and in fact we did.

But more details, such as tolerances, you don’t know. It’s as if you saw meat bought by others, and it weighed 10.3 catties. When you went to the vegetable market and told the master to buy 10.3 catties of meat, the master would ask you 10 catties. Is it okay, or ten and a half catties is okay.

If you say no, I see that what others weigh is 10.3 jins, a little more or less will not work, the master will say that you are deliberately finding fault.

And the fact is also the same. When others mentioned it to the processing, it may be 10 catties, but it can be plus or minus 0.5 catties to the factory, but if you don’t know, you can only hold on to the value of 10.3. In fact, 10 catties is more accurate. .

This is just one of them. In addition, although you can study the structure, you don't know what materials the various parts are made of, what alloys are used, and what is the ratio?

Even if you can roughly analyze these through physical and chemical analysis, you don't know what process other people used in the production process, when to heat weld, what temperature, and when to cool.

It's like giving you a dish made by a famous chef. You can taste the ingredients in it, but you don't know the heat of others, when and what seasonings were put in, and you can't reproduce it. "

Jiang Fan has completely understood that we are often complacent about being good at reverse engineering. We can reverse engineer something that others have worked so hard to research, as long as we get a sample.

This is easy to use in the early stage, but it seems to be able to use it anyway.

But when it develops to the middle and late stages, and all kinds of precision are improved to a very high level, this kind of gameplay can no longer be played. Without the original blueprint, it may almost cause a chain reaction and the whole game cannot be used.

Jiang Fan thanked the dean, and the next step was the establishment of the project, the formulation of goals, plans and personnel arrangements.

However, for their project, there is an additional pre-link, which is the learning of basic theories and technical knowledge. Jiang Fan will distribute the basic technology and craft materials related to aviation development obtained from young people to different departments, so that they can Learn to understand by yourself.

But a week later, the dean came to communicate with Jiang Fan, and the effect of learning didn't seem to be particularly good.

The main reason is that there are too many materials, and there are already many fields involved in aviation development, including:
Electrical and electronics, engineering thermophysics, solid mechanics, fluid mechanics, machinery, sealing, automatic control, composite material research, etc.

With so much content, there are many new knowledge points and technical improvements in each item, which is difficult to digest in a short period of time.

It's like suddenly giving him all the courses of three years of high school for a student who graduated from junior high school, and let him digest it within 3 months, which is too difficult.

Although I have also done a lot of division of labor and mutual assistance, let them each be responsible for one piece, and explain to others after learning to improve efficiency.

But on the one hand, even in this way, everyone still gets a lot of content. On the other hand, they are mainly good at research, and they are not good at explaining to others in a systematic way. After all, they are not teachers, so under the tight time pressure, this kind of The effect of mutual teaching is still not very satisfactory.

After Jiang Fan knew about it, he also thought it was a problem. After all, he had graduated for a few years, unlike when he was in school to absorb new knowledge, especially the ability to systematically absorb a large amount of new knowledge is very strong.

After work, it is more about the continuous polishing, improvement and innovation of existing technologies. For large chunks of new knowledge, especially when there is so much new knowledge that needs to be mastered in a short period of time, it will indeed cause discomfort. Going to teach others, it's hard for them.

then what should we do?Can you find some ways they are familiar with so that they can quickly master it?
Jiang Fan thought of it!
(End of this chapter)