Bao Zixuan returned home and saw Li Yulin waiting for him in the living room, and it seemed that his mother was still worried about him. However, when I thought that Li Yulin was also recovering from a serious illness, she was still recuperating, and she hadn't rested so late, and the buns needed to be really unbearable.

Bao Zixuan asked with concern: "Mommy, why haven't you rested so late?" ”

Li Yulin: "Didn't you say that you would come back from today's play! I've slept too much lately, so I thought I'd wait for you to come back and talk." ”

Bao Zixuan: "Are you worried about meeting Zheng Yutong tomorrow! Don't worry, I won't put up any shelves, try to be like a junior meeting an elder." ”

Li Yulin: "I wanted Zheng Jiajia to be my daughter-in-law before, but now it seems that I can't force my feelings, so you can do these things in the future!"

Hearing his mother's sudden change made Bao Zixuan a little caught off guard, after all, he very much hoped that Zheng Jiajia could become his daughter-in-law. Why has it changed all of a sudden?

Bao Zixuan: "What's wrong with you, all of a sudden, the change is so fast." ”

Li Yulin: "You're still young, don't worry about this time." But through my observations these days, I found that Zheng Jiajia is not the best choice, and I will not participate in these things in the future. As long as you get me back, I don't have a problem, but I can't help but look for it. ”

In fact, Bao Zixuan really guessed well, Li Yulin found that Zheng Jiajia was not a very ideal candidate through these observations. Before, I was thinking about increasing my son's heritage through marriage, but now it seems that it is better to find a daughter-in-law who is relatively simple and does not cause trouble for my son, so that the interests of Bao Zixuan will not be damaged because of the interests of the family. He also analyzed the matter this time, Zheng Jiajia used her relationship to make Bao Zixuan compromise.

This is not a daughter-in-law who needs to be able to take care of her son and run the house, and with Miss Zheng Jiajia's temper, she will not take care of people. He doesn't want his son to come back from work for a day and even have a person who shush the cold and ask for warmth, so he won't feel at ease when he dies.

Early the next morning, Bao Zixuan came to the Heiyun Manufacturing Center to inspect the situation of aircraft engines. Now both the theory and the processing capacity can meet the requirements. The only thing missing is that the basic materials are always up to par. This is a topic that has never been avoided, and even the basic materials of later generations of Huaxia have not been able to deliver satisfactory answers.

In the future, Germany and RB are the two best countries in the R&D and production of basic materials, but fortunately, Baozixuan has been laid out in advance. Otherwise, the more passive you will be, and if you don't do well, you will be choked by someone. Samsung's company in South Korea has no raw material supply, and finally has to put down its posture to ask for help from RB people, Bao Zixuan doesn't want to play such a thing on himself.

Now all the materials on aero engines come from the Soviet Union, and Lao Maozi's strength in this fast is also obvious to all.

Looking at the aircraft engines that the engineers built according to Bao Zixuan's drawings. Although there are still many flaws, I believe that as long as it is implemented carefully, there should be no problems. This time he wants to become a supplier of aero engines, and if he can't, it's a big deal to produce his own aircraft. In short, all the weak projects of Huaxia in later generations, Bao Zixuan, want to lay out in advance, otherwise it will be really too late.

Looking at this hangfa that gathered a lot of excellent engineers from Heiyun, Bao Zixuan knew that history was changing little by little. This machine should not have been in Xiangjiang, because he was supposed to be in the laboratory of Rolls-Royce in the United Kingdom. But now everything has changed, and this can be said to be the engine that broke the monopoly of Europe and the United States.

At present, there are three major suppliers in the aviation industry, namely Pratt & Whitney and GM of the United States and Rolls-Royce of the United Kingdom. It's that RB people are not very strong in this fast. Aero engines have always been regarded as the pearl of industry, and today the black clouds have mastered. It's a tremendous excitement and a motivation to keep going.

Hartmann is a German aero-engine engineer who is 74 years old this year. He had already reached the age of retirement, but he was invited out of the mountain by Heiyun with a lot of money. As one of the members of the R&D team for the world's first jet aircraft, he worked in an automobile factory after the war. However, his love for aircraft has always been difficult to give up, and he has been rehearsing the working principle of aero engines by himself, and the technology has not fallen behind over the years.

Bao Zixuan looked at the engine and said, "Old Hartman, how is it! Now it feels great to build this guy with your own hands!"

Hartaman smiled and said, "Boss, this is simply an industrial miracle. This engine should be in a Rolls-Royce, Pratt & Whitney, or GM laboratory, or at worst at RB. I didn't expect her to appear in Xiangjiang, which simply subverted people's cognition. ”

Bao Zixuan: "Hartman, you have to believe in yourself and believe in the black clouds. We can always do wonders, tell us about his performance!"

Hartaman: "Compared to the twin-rotor turbofan engine used in the United States, our engine has three rotors that work at optimal speeds, reducing the number of rotor stages, the number of blades and the number of adjustable blades. Due to the small number of rotor stages, the rotor can be shorter, which improves the rigidity of the rotor and reduces the performance degradation rate. The high-pressure turbine of the twin-rotor engine is generally two-stage, the second stage works at high speed and needs to cool the rotor blades, while the three-rotor medium-pressure turbine works at a lower speed and does not need to be cooled, reducing the cooling air requirement and reducing the fuel consumption rate of the engine by 1.5%. One disadvantage of the three-rotor is that the ball bearing arrangement is more complicated, but we have adopted a rounded end-tooth coupling, which makes the engine easier to assemble and disassemble than a twin-rotor engine without this coupling.

The compressor life of the black cloud engine is 40000~70000h, the medium and high pressure turbine is 25000~40000h, the combustion chamber can reach 40000h after repair, and the disc shaft is 20000 cycles.

It can be said that the overall performance of our Heiyun 1 engine is more than 15% more fuel-efficient than that of American products, and the thrust-to-weight ratio is stronger than that of the other party, but the only disadvantage is that the overall cost is 20% higher than theirs, mainly due to material and process requirements. The apportionment to the human union will be reduced, but not much. ”

As an aero-engine engineer, Bao Zixuan certainly knows the performance of this machine, but he only puts forward theories and parameters. The rest was mainly left to the German team, and the Germans did not disappoint themselves.

Germany is a particularly developed and genuine country in the field of industry, and they always believe that they are definitely a powerful country in the world in the field of machinery and industry, and it is only because of strategic factors that they finally fail. But the pride in their bones cannot be easily erased, and Bao Zixuan grasped this point to give them a second spring.

Bao Zixuan said: "There is still something to test that needs to be improved, and I will give you plenty of time." Safety must be the top priority, and we must ensure that our engines are installed on any aircraft without problems. Now we can negotiate with some small aircraft manufacturers, and the price can be lowered appropriately, so that people can understand our engines. ”

"As for the rest, I'll leave it to you, I have only one requirement for you, don't be afraid to spend money on a lot of experiments, and ensure that nothing goes wrong. ”

Hartman: "Rest assured, boss, I know how to do it." I will instill your requirements in every employee who produces aircraft engines, we Germans do not smash our own signboards. ”

This is also the reason why Bao Zixuan is relieved, but now the senior technicians and engineers in the Xiangjiang Heiyun Industrial Park are all German and RB people, and it is never a long-term solution, once the Soviet Union collapses, they are likely to leave, and the state may even issue an executive order to them.