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Liang Yuan and Li Yuanling climbed up to the fourth floor, thinking in their hearts that people in this era are really pure, even patting the sycophants crookedly, how can there be such a high floor as the fourth floor for the old man.

Li Yuanling knocked on the unit door on the left and shouted directly: "Aunt Liao, I'm Xiaoling, come and open the door"

"Ah, didn't you say you came in the afternoon, why did you come in the evening?" As the door of the unit opened, an old woman with silver hair walked out.

Liang Yuan hid his body behind his mother like an ordinary child, and looked at the old woman in front of him with his head exposed.

Liao Min saw Liang Yuan behind Li Yuanling at a glance and asked, "Xiaoling, did you bring Xiaoyuan?"

Li Yuanling took Liang Yuan out and said, "This is the master and wife that my mother used to mention to you before, you want to call grandma." Liang Yuan shouted honestly, grandma said hello

Liao Min let the two people into the house and shouted happily: "Old Wu, come out quickly, you see who is coming?"

Liang Yuan heard the sound of pulling a chair in a room, and an old man with gorgeous hair and a kind face walked out. "You're Xiaoyuan, grandpa has wanted to know you for a long time, and I thought you would come to Shengjing to participate in the semi-finals of the Youth Science Competition. Wu Zhonghua said to Liang Yuan with a smile on his face.

Liang Yuan, who has been a man of two lives, saw Wu Zhonghua for the first time, looking at this scientist who is internationally known as the "father of turbofan engines", Liang Yuan was excited, just said hello to Wu Zhonghua in a restrained manner, and then sat on the sofa honestly like an ordinary child, with his back straight.

Li Yuanling looked at her son with a restrained look and said funny: "It's still a good teacher, this guy is lawless at home, I haven't seen him sit so well-behaved for many years." ”

Liang Yuanxin said that the scientist in front of him was at the same level as Qian Xuesen, and Qian Lao was able to safely get more than 100,000 rockets composed of backward parts produced by turtles into outer space, and this person also made the first domestic ramjet engine suitable for all supersonic missile propulsion systems in 1958 without having anything. It is a pity that with the implementation of the national policy of grasping aerospace and releasing aviation, the ramjet engine project was cut. The sequelae is that until the 21st century, all kinds of eggs of turtles are overweight, short legs, and slower than their foreign counterparts because the engine is not powerful.

Wu Zhonghua, who has a great vision in scientific research, advocated the use of the total energy principle of "temperature matching and cascade utilization" shortly after the introduction of Spey engine in 1980, and vigorously developed gas turbines with intercooled recuperation cycle system, and at that time, Da Lijian was still squatting in the big pit of the simple cycle (Note 1) gas turbine to play in the mud, and it was not until 1990 that the United States Navy decided to carry out the development of gas turbines with intercooled recuperation cycle system under the lobbying of Rolls-Royce in the United Kingdom. Since then, it has embarked on the right path of gas turbine research and development.

I don't know if the Sbei gas turbine that my mother is about to lead the transformation has an intercooling and reheating circulation system, in his previous life, Wu Lao seemed to be in the hospital at the end of this year, and he didn't want to take this old man to the hospital in advance. Liang Yuan's head was swirling with all sorts of messy thoughts.

Liang Yuan took a deep breath, calmed down his agitated mood and said: "Grandpa Wu, my uncle and I went to Suifenhe, and it's a pity that I missed the promotion match, I heard my mother say that I am the key to your reunion with her."

Wu Zhonghua nodded to Liang Yuan and said, "I saw that your mother designed the fan blades for you that are familiar, and I found your mother after looking through your information in curiosity, I heard your mother call a few days ago and say that you have a new invention?"

Liang Yuan couldn't avoid this kind of thing of being a bird, he just provided a rough idea, and the rest was done by Li Yuanling and Liang Jiangping. This is different from the air conditioning fan, the knowledge involved is too deep and too much, if this big hat is buckled on his head, it will be strange if he is not allowed to be exhibited on the TV station.

Wu Zhonghua chatted with Liang Yuan for a while, but he admired Liang Yuan's attitude of not admitting that the bladeless electric fan was invented by himself. Wu Zhonghua thought for a while and said to Liao Min: "Old Liao, you don't have anything to do now, Xiaoyuan is just about to apply for the junior class of Dongda University, and that Ma Tianyuan of Dongda is your student, you go to him to get the exam questions of the juvenile class in recent years, and when you come back with some review materials, you can make up for Xiaoyuan at home." ”

Then he said to Li Yuanling: "Xiaoling, your wife has cleaned up your room with Xiaoyuan, and recently I am responsible for giving you a make-up lesson, and your wife is responsible for giving Xiaoyuan a make-up lesson." ”

Where did Liang Yuan think that coming to Shengjing would be such a result, he knew that it was better to stay in Benxi honestly and accompany the two loli to class.

Li Yuanling looked at Liang Yuan's bitter face and said with a smile: "You proposed it yourself to take the junior class, does Xiaoyuan want to regret it now?"

Wu Zhonghua looked at Liang Yuan shaking his head aggrievedly, laughed out loud and said to Li Yuanling: "With Xiaoyuan's pioneering thinking, it is definitely more than enough to enter the juvenile class, let Lao Liao lay a foundation for him, study for ten or eight years, and you will be regarded as a successor in the future, Xiaoling." ”

Liang Yuanxin said that if he let himself honestly stay at the University of Tokyo for ten or eight years, it would be better to die, and the ideal thing is to be able to mix into the University of Tokyo to listen to the life or something, and then he can come and go freely to be a master behind the scenes. I just don't know if there are auditors in the juvenile class, if only I could go through the back door for this qualification.

Li Yuanling said with a smile: "Who knows how long his interest in engines can last, doing our business is not a real passion, but it can't be sustained." After speaking, Li Yuanling took out the drawings of the bladeless electric fan in her bag and handed it to Wu Zhonghua, and said, "Teacher, help me take a look, this is what Lao Liang and I have sorted out together in the past few days." ”

Wu Zhonghua took the drawings and looked at them carefully for a while and sighed and said: "I have been engaged in aero engines for 50 years, and I never thought that the principle of internal and external ducts could be used in this way. ”

Wu Zhonghua pointed to the drawings and said to Li Yuanling: "Don't look at this thing as inconspicuous, you have to think about the ideas here." ”

"Our country has advocated the integration of production, education and research for many years, but the reality is that in recent years, with the introduction of technology, some of the production has kept up with the international advanced level, learning, our university textbooks are still using the international fifties and sixties, not to mention the research, either on the basis of the fifties and sixties to develop products that have now been eliminated or are about to be eliminated, or so ambitious to directly track the international advanced level. ”

"This thing invented by Xiaoyuan is to obtain new applications of the original technology through the diffusion of guò thinking on the basis of existing technology. Take the design of gas turbines as an example, we all know that the higher the turbine inlet temperature, the higher the output and efficiency of the unit, but the material level in our country is not good, so we can only find another way to improve the efficiency of the gas turbine by optimizing the impeller design and adding intercooling and reheating devices. ”

Wu Zhonghua took a sip of water and continued: "I have often visited foreign countries over the years, and the development of foreign aero engines has now been systematized. It is basically divided into: pre-research project, core engine plan, engine serialization of these three parts, in the specific implementation of basic research, applied research is usually uninterrupted, when there is a demand can be immediately turned into engineering development.

However, our country is different, our industrial base and scientific research are all under the tutelage of the Soviet Union, and no one usually engages in basic and applied research on engines. And after a model is successful, the project will be completed, and everyone will put Nanshan and put the knives and guns into storage. The research team was basically disbanded, and the next time there is a project need, follow the steps above to do it again. ”

Liang Yuanxin said that Wu Lao's words are still polite, and the turtle is simply blind in the development of aero engines, and now the turtle is engaged in the engine and the government of later generations is engaged in the same performance project, defrauding the money to spend hard, and then making a similar appearance of something out, the promotion of the official and the fortune of the fortune, everyone sits in a row to eat the fruit and then goes their own way.

Didn't Taizu say that we have to solve the problem of whether we have it first, and then think about other things, and then after we have things, we will go abroad to introduce advanced ones, and the devil will not be relieved.

This hybrid mode with the professional process of aero engine dù higher and higher, the development of more and more difficult, finally to the development of Taihang engine can not be mixed, Liang Yuan in his previous life in 2005 Taihang on the finalized appearance, but unfortunately until Liang Yuan wore before the Taihang production large-scale equipment troops, Taihang engine reliability, maintenance, ceiling, thrust curve and starting characteristics simply do not meet the military requirements of the state.

When the turtle still wanted to introduce the old trick from Shi to the foreigner, he was beaten by the rice grain and the old Maozi, and his face was swollen and rolled back.

As a result, until 2012, bitter military fans were so excited to see the silver-gray chrysanthemum J-10 and 27 that they couldn't help themselves. TM has been finalized for eight years, and in Chengfei and Shen Fei, I can't even mix the position of the No. 1 machine.

Wu Zhonghua handed the information of the bladeless electric fan to Li Yuanling and said: "The reason why the teacher promoted the Spey gas turbine project is to figure out that the platform of Guò Spey has made a breakthrough in the serialization of aero engines. In the past few years, the Navy plans to upgrade the power of the ship to make it completely gasified, which is a good opportunity for the current project team, if we can develop a gas turbine that meets the requirements of the Navy, it will have a serious impact on the national aero engine research and development mechanism. ”

Note 1: A simple cycle means that the working medium of the gas turbine comes from the atmosphere, and finally it is discharged directly to the atmosphere.

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