Rebirth of science and technology academic master

Chapter 174 Aviation Engine (810)

Chapter 175 Aviation Engine

A strong country must have a strong army, and a strong army can lead to national security!

On the news network, the host started the report with a one-minute report on the scene that took place in the military training at Shuimu University today.

Netizens did not expect that Qin Yuanqing would be on the news network again, and everyone on the Internet would become lively. If you are a celebrity, it is extremely rare to be on the news network, but for Qin Yuanqing, you have to be on the news network several times a year.

It has been two months since the last news.

On the Internet, Qin Yuanqing has a very famous reputation as the best singer among scientists. Anyone who has heard Qin Yuanqing sing can say nothing bad about it.

The one who sings best among scientists, and the one who does the best scientific research among singers.

It's Qin Yuanqing.

Even some people who like music cried loudly and said that Qin Yuanqing was a great singer who was delayed by scientific research.

Of course, Qin Yuanqing has no feelings about being on the news broadcast. He will be happy and proud at the beginning, but it won't matter once the number of times increases.

Nothing to get excited about.

When Qin Yuanqing returned to the office, he began to think about it. Whether it is an automobile research institute or an aerospace engine institute, it needs to be discussed at the school board to formulate a resolution, and even be filed with the ministry before it can be started. This will take at least a week or even two weeks. can be completed.

Then Qin Yuanqing closed his eyes and immersed himself in his mind. The whole set of F119 turbofan engine technology. The F119 turbofan engine is a dual-rotor small bypass ratio afterburning turbofan engine. It uses two-dimensional vector spray irrigation and deflection angle that can be deflected up and down. An engine whose thrust and vector are controlled by a digital electronic system up to 20 degrees. Its thrust is 15 tons, which is actually smaller than the F135 engine. However, Qin Yuanqing finally chose this engine. The reason is very simple. The F135 engine was developed on the basis of the F119. Mastering the F119 engine is such a headache. Crossing the river and developing the F135 engine was a matter of course.

The more he learned about the F119 engine, the more Qin Yuanqing was frightened by the technology of the United States. It was hard to imagine that such an advanced engine was conducted on the bench for the first time in 1986 and successfully developed in the 1990s.

Therefore, it is not unreasonable for people to say that the Cold War was a period of human technological explosion.

In order to surpass each other, the two superpowers did not hesitate to spend money on scientific research, and the result was an explosion of various high technologies. The Internet was actually born in that era. Even though that era has ended 20 years ago, society still benefits today. in that era.

"The United States is really perverted. With such an engine, the F22 is paired with two F119 engines, and its combat effectiveness is incredible!" Qin Yuanqing was shocked.

The F119 engine has a maximum thrust of 15.6 tons, an intermediate thrust of 10.5 tons, a total pressure ratio of 35, a bypass ratio of 0.3, a temperature in front of the turbine of 1577°C~1677°C, a maximum diameter of 1.13 meters, a length of 4.826 meters, and a weight of 1360kg. It can be said that this is an extremely advanced and mature engine.

The entire F119 engine consists of a 3-stage fan, a 6-stage high-pressure compressor, an annular combustion chamber with a pneumatic nozzle and a floating wall flame tube, a single-stage high-pressure turbine and a single-stage low-pressure turbine that rotates in the opposite direction to the high-pressure turbine, an afterburner and a two-dimensional Vector nozzle and other components. The entire engine is divided into six units: fan, core engine, low-pressure turbine, afterburner, tail nozzle and accessory transmission casing. There are also accessories, FADEC and engine monitoring system.

According to Qin Yuanqing's understanding, Pratt \u0026 Whitney invested a huge US$2.5 billion in research and development expenses that year before it was successfully developed. You must know that this is not the US$2.5 billion today, but the US$2.5 billion in the 1980s and 1990s. The US dollar was very valuable at that time. Pratt \u0026 Whitney is an engine giant with advanced engine technology and has invested US$2.5 billion in this foundation. Nowadays, if a country starts from scratch and does not invest hundreds of billions of dollars, it is estimated that it will be difficult to succeed.

One can imagine how difficult it is to develop an advanced aeroengine. Otherwise, China will still not have an engine that can reach the world's leading level. The 'Kunlun engine' seems to have been installed on fighter aircraft, but in fact it is far inferior to the F16 aero engine.

Aviation engines are impossible without investing a huge amount of manpower, material and financial resources, unless they have a system like Qin Yuanqing.

Sometimes having a system is so awesome that it can help the country save hundreds of billions of dollars in research and development costs.

And even better is that there is patent protection in the civilian field, but there is no such thing as patent protection in the military field. Even if he actually copied the F119 engine, the United States could only break his teeth and swallow it.

Fortunately, he exchanged the entire set of F119 aero-engine technology. Otherwise, he would really have to create something from scratch, and he doesn’t know how much time it would take. For example, the high-temperature resistant materials, the material formula cannot be wrong at all, and even the slightest deviation will lead to The high temperature resistance properties of materials vary greatly.

A very important reason for the poor performance of Huaxia aircraft engines is that the engine's high-temperature resistant materials are not good. For example, the vortex front temperature of the Kunlun engine is about 1300°C, which is about 500°C lower than the F119 aeroengine. Under the same circumstances, the higher the temperature, the stronger the thrust.

Moreover, the basic materials of aviation engines are only one aspect. Others also involve structure, airflow, etc. It is really a step-by-step research and development, which really requires a lot of manpower, material and financial resources. It is no wonder that when the higher-level departments heard that Qin Yuanqing wanted to engage in aviation As for the engine, I declined it directly, even if Qin Yuanqing was an academician. It is true that aviation engines are not something that can be easily played with.

"Haha, it seems that this time there will be another big development in the high-precision field." Qin Yuanqing thought to himself that this high-temperature-resistant material can be used not only on military aircraft, but also on other aircraft. It is also applicable in other fields.

Moreover, the requirements for processing F119 aero engines are very high, and domestic processing equipment may not be able to meet them.

Qin Yuanqing took a look and saw that it was already dark outside, and the clock on the wall also pointed to 12 o'clock. Only then did he realize that it was already 12 o'clock unknowingly while he was immersed in F119 aircraft engine technology.

I sorted the materials on the table, turned off the computer, turned off the lights in the office, and locked the door with my backhand.

Looking at the two laboratories, the lights in the laboratories have been turned off, but the lights in the offices of graduate students and doctoral students are still on.

Qin Yuanqing went upstairs. His group of graduate students and doctoral students were mainly engaged in research and development. As for classes, Qin Yuanqing only had two classes a week. If he had any questions, he would either ask other people for help or wait until Qin Yuanqing was in class. .

Through the window, he saw several people playing League of Legends. Qin Yuanqing smiled. League of Legends is very popular now and is deeply loved by young people. Tencent is making a lot of money from League of Legends and making money every day.

In school, students often even compete in dormitories, winning two out of three games, and the losing dormitory treats them to dinner.

Some boys even cheated little girls by playing League of Legends.

Qin Yuanqing did not disturb them. As a former student, he understood this very well. Anyway, at this time, it’s normal to play games and relax.

Qin Yuanqing told all the graduate students on the first day that if he failed to pass the three-year thesis, he would leave his staff. If he failed the assessment every semester, the subsidy would be reduced. If he failed the assessment three times in a row, he would be left to fend for himself. .

Looking at the doctoral students again, Qin Yuanqing could not help but secretly nod his head when he saw each of them reading a book. This sentence will never go out of style.

Compared with graduate students, doctoral students have heavier scientific research tasks and need to consult a lot of information. At this stage, they are not just listening to lectures, but also studying on their own, acquiring knowledge from books, and then slowly forming their own opinions. own knowledge.

Even when Qin Yuanqing was giving lectures to them, he often mentioned that it is better to have no books than to have no books at all, and to be good at thinking. Even he taught only what was reasonable for the time being, and might not be appropriate in a few years.

For mechanical doctoral students, the most important thing is to participate in research and development. As long as you participate in research and development with your heart, you will not be short of a high-quality paper. Qin Yuanqing's laboratory is most indispensable for papers. His two laboratories have been working in the past year The papers produced are quite objective, and several of them have been published in the highest-level professional journals.

As for doctoral students in mathematics, Qin Yuanqing assigned research subjects early in the morning, which are all mathematical problems in their respective fields. As long as they can solve and prove the mathematical problems he assigned, they can graduate with a doctoral degree.

In the past period of time, the doctoral students under him have been getting married one after another, and even graduate students have gotten married several times. But getting married is relatively simple, just get a certificate, treat everyone to a meal, and introduce your significant other to everyone.

Qin Yuanqing stayed for a while and then went home.

When he got home, he saw the cute Ferrari parked in the parking space. Qin Yuanqing was stunned for a moment. When did Jingtian come back?

Although Jingtian was not filming during this period, he was still performing in business and appearing on TV, just like a trapeze artist. Moreover, Jingtian was recruiting troops and was so busy that Qin Yuanqing didn't even know she was coming back today.

He quickly picked up his phone and saw several missed calls and hundreds of messages. Qin Yuanqing couldn't laugh or cry. He was so immersed in his thoughts that he was blocked from the outside world.

His mind was running rapidly. After a minute, he thought of how to deal with it. With a bright smile on his face, Qin Yuanqing got out of the car and walked towards home.

Such a simple thing can't stop Qin Yuanqing, who has an IQ of over 200, from joking, he just didn't answer the phone or replied to the message, what's the big deal.

Qin Yuanqing hummed happily, opened the door and walked in.