Thanks to Chi Feng Zhuoda for his generous reward of 300 coins.

It wasn't until late that Liu Yijiu introduced what he had learned.

Whether it is a helicopter, a fighter jet, or a transport aircraft, the biggest constraint for the republic is not the design scheme, but the question of basic materials. There are many kinds of materials used in an airplane, and some materials are only used a little, but this is very important.

"The aluminum alloy used in airplanes is different from that used in rockets, after all, airplanes need to be used repeatedly, and this issue is something we discussed a long time ago. 6061, 7075 and other aviation aluminum, although the current domestic production, but this performance still needs to be improved a lot, and these two materials can only be produced in small-scale laboratories in China...... "Liu Yijiu is currently planning when to get out the aviation aluminum that the Republic has spent a lot of energy researching.

However, he has never found a chance, Jia Yiming's current main direction of attack is still on the superalloy used in the engine, this kind of thing, whether it is missiles or aviation, is used in the most critical part - the engine!

The engine is the heart, and without an advanced engine, everything is in vain.

Liu Yijiu faintly felt that in the underground part of the base, those research areas that Wang Shunyi took him by but did not let him see, should have research technology in this area.

The Ninth Academy base itself has absolutely no research on nuclear weapons, and this Liu Yijiu can be determined. This is a combat readiness reserve base, and the project it is engaged in should not have much to do with that kind of strategic-level mass killing weapon. Whether there are Dongfeng 5 and atomic bombs in the base in reserve, they have not been confirmed anyway.

Even the nuclear power plant inside was built by people from outside, and a lot of equipment was brought in from outside.

The nuclear power plant is one of the next construction projects.

The train was still very slow, and when they returned to the base again, it was late at night the second day after they left Rongcheng, although it was late, but the design room was still brightly lit. When he was away, Yang Shan and the others were stepping up to get some process documents and conduct various firearms experiments.

Liu Yijiu made a military order in this regard.

In order to make the research progress of multi-route missiles faster, Cao Zhijiang and Liang Qiang both ate and lived in the laboratory, and Jia Yiming has not come out since entering the cave. He's going to get back all the time he's lost all these years.

"You kid, you haven't slept in the middle of the night, why did you come to me?" Jia Yiming's whole person has lost a lot of weight, his eyes are bloodshot, and he looks haggard on the outside, but his spirit is in a state of excitement, and his face is extremely pale......

"Teacher Jia, how many days have you not slept here? If this continues, it is estimated that you will be dragged down before the superalloy formula is improved......" Liu Yijiu regretted telling Jia Yiming about the superalloy formula for aviation.

These experts are the wealth of the country.

Without them, it would have been very difficult for the country to go further in these areas.

It was only in the seventies that the United States experimented with the use of new production processes to manufacture directional crystalline blades and powder metallurgy turbine discs, and now the progress is not very great. Superalloy components such as single crystal blades are mainly used to meet the needs of the increasing temperature of aero engine turbine imports.

It is more difficult for the Republic to produce even the most basic nickel-based superalloys, after all, this was only started in the mid-fifties.

And the top expert in this field, Director Yao Tongbin, was killed again, so that Premier Zhou dropped the teacup during the meeting, and anyone with a discerning eye can see how big the loss is.

And Jia Yiming is another Yao Tongbin in the Republic, of course, this refers to the technical aspect.

Liu Yijiu hopes that he can get some superalloy formulas out of later generations and produce them on a large scale, so that whether it is a rocket engine or an aero engine, he will have the opportunity to increase research in this area. Only by finding the right materials will it be possible to change the dilemma of the republic's aviation industry.

"It's okay, I can't sleep at this moment. Xiao Liu, where did you get those information? According to the formula you provided, we have produced some materials for experiments, and the properties such as high temperature strength, oxidation and hot corrosion resistance, fatigue performance, fracture toughness, etc., have been improved by more than 60% compared with the original ones we used...... "Jia Yiming didn't care how long he hadn't rested.

Researchers, when they make breakthroughs in their own research, will never stop if they do not get the final results.

It simply can't stop.

In a phrase that will become popular in the future, it is that the earthlings can no longer stop their enthusiasm for research......

"By the way, what is the matter with you coming here at this time?" The formulas provided by Liu Yijiu were all put forward very secretly. For those who don't know how to do it, this is what he proposed. It won't make a difference.

For experts like Jia Yiming, it is also an assumption, but they can improve their experiments based on these assumptions.

It's equivalent to mentioning points.

A flash of inspiration is very important for scientific research. Countless major breakthroughs in science and technology are all due to the flash of inspiration of some scientists! For some of the ideas put forward by Liu Yijiu, Jia Yiming is an expert, so he can pay attention to it.

Now, it's finally paying off.

"It's okay, Jia Ling can't come in here, she asked me to persuade you......" Liu Yijiu hesitated, but still didn't tell his intentions.

"Don't say this, if there is anything to say, although we haven't been in contact for a long time, I still know you better. Just for this, you won't come to my side in the middle of the night......" Jia Yiming didn't believe that Liu Yijiu was just trying to persuade him to rest early.

"Really. In the past few days, I followed Director Wang and them to Rongcheng on a business trip, and I slept in the mountain city for a day during the day, and I couldn't sleep at night......" Liu Yijiu didn't believe it when he saw Jia Yiming, so he could only talk nonsense.

"Anyway, I can't sleep now, let's discuss?" Liu Yijiu, this kid is not as simple as it seems, although he doesn't know where his knowledge comes from, but he also knows that it will definitely not be simply learned from a certain teacher.

If you can learn this from university teachers, all aspects of the republic, as for what will happen? It is possible to mass-produce talents in all related aspects......

When Liu Yijiu heard this, he was immediately depressed.

Everything he knew about superalloys was almost all picked up by Jia Yiming silently. And now again?

These things are enough to make people suspicious! Besides, I have to let those old guys from the Academy of Sciences pick up and slice him!

"Mr. Jia, I don't know much about superalloys, I really ......"

"Less to say, you don't know much about this, more than I know for decades. If it weren't for some of your suggestions, who knows how much time and how much it would cost us to get to where we are today? Jia Yiming immediately disagreed with Liu Yijiu's statement, "Xiao Liu, I know you don't care about reputation, but you have to consider the role of us in making these materials to promote the entire national defense industry system!" Are you willing to see the country continue to be oppressed by the Soviet Union and the US imperialism because of its inadequate weaponry? Our republic has been oppressed by imperialism for hundreds of years......"

Hearing that Jia Yiming was going to give himself a history and politics class again, Liu Yijiu suddenly began to have a big head, and hurriedly said his intentions and interrupted Jia Yiming to give him a history class.

"Mr. Jia, in fact, the purpose of my visit is because I have some ideas about aviation aluminum alloys...... Liu Yijiu hurriedly said some of his understanding about aviation aluminum.

Aviation aluminum is another important material in the aviation and aircraft industry. Most of the materials used in the aircraft are made of this strong and lightweight material. Otherwise, the plane will not be able to fly a few times with ordinary materials, and it will be scrapped due to material fatigue. The material is too heavy, and even if the plane flies, it is of little use......

"Improving aerospace aluminum? We don't have any problems with the materials we have now used in missiles, right? Don't? Hearing Liu Yijiu say that he wanted to improve the formula of aviation aluminum, Jia Yiming immediately thought of a possibility.

"Not necessarily, but we can prepare for that. On the way back, because they heard the current progress of the Z-6 and Z-7 projects, and because they got a lot of funds from the Rongcheng Military Region this time, they wanted to do this ......" Liu Yijiu told Jia Yiming about the situation.

This matter, whether it is done in the future or not, can be prepared in advance if you have the ability.

Materials are the key, and the development of any technical equipment is inseparable from advanced materials.

"Since it is not necessarily, is it a little inappropriate for us to start developing in this direction now? Manpower, funding, these are all problems......" Jia Yiming said with a frown.

Liu Yijiu is not the manager of the base, since he proposed this, Zheng Hao and they will definitely agree. But in this way, it is a bit wasteful to study these materials that are not used.

"Materials are the foundation, and whether they can be used or not needs to be studied. What's more, these aluminum alloys are not only used in the aviation industry, but also in the aerospace industry. If our missile shell is stronger with the same weight of aluminum alloy, we can install a more efficient engine......" Liu Yijiu shook his head, not thinking that this was a waste.

As long as you have money, you must invest in basic research first.

Otherwise, when you need it later, if you don't have the most basic materials, it's in vain.

"Have you experimented with this recipe?" Jia Yiming didn't ask Liu Yijiu where these formulas came from. Instead, he was asked directly if he had tried it.

"No, this is also some of the plans I thought about when I was bored when I was in school to improve performance and add some elements, whether it will work or not, I don't know very well......" Liu Yijiu definitely hasn't tried it.