Rebirth of science and technology academic master

Chapter 171 The project was rejected (510)

Chapter 172 The project was rejected

On the day when Jingtian officially graduated, a major event affecting everyone was officially announced. The threshold for personal income tax was officially raised from 2,000 yuan to 5,000 yuan, which means that many people with incomes below 5,000 yuan will no longer need to pay taxes. Pay a tax.

At present, the salary of most workers in China does not reach 5,000 yuan, which means that many people no longer need to pay personal income tax, reducing the burden on low-income people and increasing the income of low-income people in disguise. This has positive significance for narrowing the gap between rich and poor.

Moreover, this year the two-child policy was officially implemented, and it is no longer illegal to have a second child.

"Academician Qin, your merits are immeasurable!"

"My whole family is grateful to you and has set up a longevity card for you!"

"Woooooo~~~My mother is pregnant. I will have a brother or sister who is 18 years younger than me (crying loudly)"

"No need to be afraid anymore, I will have a son soon! (Crying loudly)"

"I used to have only one daughter, and I always felt that I had no motivation to work! Now I am so motivated that I can work overtime for a year!"

Various comments are very lively on Qin Yuanqing's WeChat account. Although having a second child is a good thing, there is also something that is not very good.

That is a big age difference, and even the phenomenon of children and grandchildren being the same age. These are social problems. Of course, overall the advantages outweigh the disadvantages.

The university has also officially ushered in the summer vacation. Compared with last year, the overall results of this year's college entrance examination have improved a lot. There are an astonishing more than 100,000 people with perfect scores on the national mathematics paper, which has caused a lot of controversy on the Internet. After all, last year In the college entrance examination, not many people got perfect marks on the mathematics paper, but now it is common to get perfect marks.

So much so that last year’s college entrance examination candidates complained that this year’s candidates were really lucky, and the mathematics section was really boring, because just after the college entrance examination mathematics ended, someone uploaded the exact same questions, and then every question could be found in the "Qin Family Collection" I found exactly the same questions, so many people criticized the math team for not being good enough and not thinking carefully about the questions before just copying them.

Qin Yuanqing was speechless after reading this year's college entrance examination papers, because he found that in the college entrance examination question group, all subjects suffered unreasonable disasters, and many of the questions were in the "Qin Family Collection". In the last life, when Qin Yuanqing was a sophomore in college, he thought about taking the college entrance examination again, so he reviewed high school knowledge for a period of time. Although he did not take the college entrance examination later, he paid close attention to this year's college entrance examination and had read all the college entrance examination papers. When he was compiling the "Qin Family Collection", he would analyze it and use it as a case study.

Unexpectedly, the historical inertia is so strong that there are so many identical questions.

It can only be said that the college entrance examination topic group really did not pay attention to its work, and did not read the "Qin Family Collection" carefully, so it is now being criticized overwhelmingly, which is also self-inflicted.

For Qin Yuanqing, this brought great benefits to Qin Yuanqing, that is, after the college entrance examination came out, Xinhua Bookstore's "Qin's Collection" was sold out and all the inventory was wiped out.

Qin Yuanqing felt that a sudden idea in his mind turned out to be his cornucopia. There is no doubt that he will be on this year's rich list of writers again.

Unlike FAW, "Qin's Collection" Xinhua News Agency has always been settled monthly, and the monthly settlement amounts are also different. It is undoubtedly the highest during the beginning of school, and it starts to be lower later.

Shuimu University has begun its summer vacation, but Qin Yuanqing does not have a summer vacation. For scientific researchers, there is actually no summer vacation. When students are on summer vacation, scientific researchers basically continue their scientific research projects. For professors, many are invited to give lectures in companies, which can be considered as a source of income.

For university teachers, it is actually not difficult to start an outside business. They can hold training courses, give lectures, appear on TV, or even start a company, all of which are guaranteed to make a profit.

Qin Yuanqing gave a project report on the study of aero engines. Yes, Qin Yuanqing started to work on aero engines.

An aircraft engine is a highly complex and sophisticated thermodynamic machine that provides the engine with the power required for aircraft flight. As the heart of the aircraft, it is known as the "Flower of Industry". It directly affects the performance, reliability and economy of the aircraft, and is an important manifestation of a country's technological, industrial and national defense strength.

At present, there are only a few countries in the world that can independently develop high-performance aero engines, such as the United States, Russia, Great Britain, and France, and the technical threshold is very high.

Although China has its own independently developed J-10 fighter jet and the J-20 fighter jet that has already been tested, it does not have its own aviation engine.

Once there is a fight, it will be very dangerous and it is easy to get stuck.

However, Qin Yuanqing reported it, but was called back. The superior politely said that there is already a dedicated team working on research and development, and then said a lot of things. Qin Yuanqing just smiled lightly, not because he was not in this field, and the superior did not Do you trust?

At present, China’s two most famous aero-engine scientific research projects are the ‘Kunlun engine’ and the ‘Taihang engine’.

The 'Kunlun Engine' project was initiated as early as 1984 and is positioned as a medium-thrust military turbojet engine. After hundreds of rigorous ground assessment tests and aerial assessment flight tests, the engine was officially approved for design and finalization in July 2002. . Its successful development has made our country the fifth country in the world that can independently develop aircraft engines after the United States, Russia, Britain and France.

The development unit of the ‘Kunlun Engine’ is the Fengtian Engine Design Institute of China Aviation Industry Corporation of China. The development cycle lasted for 18 years, followed by eight years of test flight, and it has not been put into use until now. Its successful development marks that my country's aerospace engines have entered a new stage of self-development from only mapping, imitation, improvement and modification. It ends the long history of my country's inability to develop aerospace engines on its own. It also marks a new chapter in the design of my country's aerospace engines. A new page of independent development has emerged.

The 'Kunlun Engine' has a thrust-to-weight ratio of 7:1, a maximum outer diameter of 882 mm, and a total length of 4,635 mm. The gas generator overhaul interval is not less than 6,000 hours, the power turbine overhaul interval is 20,000 hours, and the total power turbine life is 100,000 hours. , the total life of the gas generator is 40,000 hours.

But it is undeniable that the Kunlun Engine project was established in 1984 and was aimed at second- and semi-generation fighter jets. Once it became successful, it actually fell behind and is now being used on J-7 and J-8 aircraft.

The symbolic significance of the ‘Kunlun Engine’ is greater than its practical significance. Its appearance only means that our country can independently develop aviation engines, but it still cannot change that our country's aviation engines lag behind the world's advanced level.

‘Taihang Engine’ has been making big news and inspiring people in recent years. The Taihang Engine was pre-researched in 1978 and the project was approved in 1987. The design review and assessment was completed at the end of 2005, which lasted 27 years. Developed by the 606 Institute of China Aviation Research Institute, it is a domestic third-generation large-scale military aviation turbofan engine. Taihang is known as the ‘backbone of the world’. China’s first high-thrust turbofan engine is named Taihang, and its significance is self-evident.

Although the latest WS-10 'Taihang' engine installed in the domestic J-11B heavy fighter has successfully completed the finalization review, marking the leap from the second-generation engine to the third-generation engine in our country, one problem cannot be ignored, and that is' The Taihang engine still has a lot of shortcomings. Even after it is finalized, the quality of the engine is still unstable, and it is still in the troubleshooting stage.

If we give an evaluation to the current "Taihang Engine", it is that the "Taihang Engine" is barely usable and not enough to compare with international advanced aviation engines.

Although his project report was rejected, Qin Yuanqing was not depressed. After all, he could do it himself without R\u0026D funding from his superiors. He was not like other scientists who were helpless without research funding.

Qin Yuanqing immersed himself in the library every day, looking at books on the corresponding fields of aero-engines, enriching his knowledge reserve.

In every field, there are actually big gaps.

For example, car engines and aerospace engines are both engines, but the technical content of the two is so different that they are completely incomparable.

As he learned more and more, Qin Yuanqing began to understand why aeroengines are so difficult, because it involves two major aspects, one is basic materials, and the other is design.

Basic materials, this is simply China's weak point, because the country had no money before and did not invest enough in basic research. The research on basic materials often involves detailed theoretical demonstrations of possible element ratios and manufacturing processes, and then consuming materials for research, constant trial and error, and finally approaching the reasonable range step by step. The entire research and development of basic materials is very time-consuming. Money, the money consumed is very scary.

Especially for aero engines, turbine blades, combustion chambers, etc., great emphasis is placed on basic materials, and sometimes a slight difference can make a huge difference. And once you make a mistake, the losses will be huge.

Therefore, in China, except for the national team that is now engaged in basic research, no private enterprise dares to enter, because once it enters, it cannot get out, and bankruptcy is foreseeable.

No matter how awesome a private enterprise is, let it try out basic scientific research! Those who point their fingers at the country to make money with national dividends have no conscience.

Any breakthrough in advanced technology will cost the country a lot, forming a sunk cost, and then the company will earn dividends from its operations.

As for the second major aspect of design, it is also a big problem. China's start is still too late. These areas require krypton gold. There is no krypton gold in the early stage, so now it is equivalent to making up for homework, which is not so easy to make up for. , Even the teacher's foundation is not solid, it is strange that the students he teaches can have a solid foundation.

Therefore, in the past, when imitating products, we often knew what was happening but didn’t know why, and we didn’t know the principles. Therefore, although the imitation products were exactly the same, there were actually big deviations in performance, and we didn’t know where the problem occurred.

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