Reborn Tech Scholar

Chapter 171 Project rejected (510)

Chapter 172 Project rejected
On the day when Jingtian officially graduated, a major event concerning everyone was officially announced. The personal tax threshold was officially raised from 2000 yuan to 5000 yuan, which means that many people with incomes below 5000 yuan will no longer need to apply for personal income tax. Pay a tax.

At present, the wages of most workers in Huaxia are less than 5000 yuan, which means that many people no longer need to pay a tax, which reduces the burden on low-income groups and increases the income of low-income groups in disguise.This has positive implications for narrowing the gap between rich and poor.

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

"Academician Qin, your merits are immeasurable!"

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

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

"Don't be scared anymore, I'm about to have a son! (Crying loudly)"

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

All kinds of comments are very lively under Qin Yuanqing's WeChat and Weibo. Although the second child is a good thing, there is also one thing that is not very good.

That is, there is a big age gap, and there is even a phenomenon that the offspring are the same age. These are social problems.Of course, overall the advantages outweigh the disadvantages.

And the university has officially ushered in the summer vacation. This year's college entrance examination, compared with last year, the overall score has improved a lot. The national mathematics paper has reached an astonishing more than 10 people. It has caused great controversy on the Internet. After all, last year In the college entrance examination, there are not many full marks in the math papers, but now they are generally full marks.

So much so that last year's college entrance examination candidates complained, this year's candidates are really lucky, the math group is really boring, because just after the college entrance examination mathematics, someone uploaded the exact same questions, and then every question can be listed in "Qin's Treasure Book" I found exactly the same questions, so many people scolded the math group for being unlevel, and didn't think hard about the questions, so they copied them directly.

Qin Yuanqing was speechless after reading this year's college entrance examination papers, because he found that this time the college entrance examination proposition group, all subjects suffered unreasonable disasters, and many questions were in the "Qin's Treasure Book".In the last life, when Qin Yuanqing was a sophomore in college, he thought about taking the college entrance examination again, so he reviewed his high school knowledge for a period of time. Although he didn't take the college entrance examination later, he was very concerned about this year's college entrance examination. He read all the college entrance examination papers. When he compiled "Qin's Collection", he would analyze it as a case question.

As a result, I didn't expect that the historical inertia is so strong that there are so many identical questions.

It can only be said that the work of the college entrance examination proposition team was really careless, and they didn't check the "Qin's Collection", so now they are 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 broke out, Xinhua Bookstore's "Qin's Treasure Book" was sold out, and all the inventory was wiped out.

Qin Yuanqing felt that a sudden idea in his mind back then turned out to be his own cornucopia. There is no doubt that from the current point of view, he will once again win the list of rich writers this year.

Unlike FAW, "Qin's Collection" Xinhua News Agency has always settled monthly, and the monthly settlement is also different. The beginning of the school season is undoubtedly the highest, and it starts to be relatively low.

Shuimu University started to have summer vacation, but Qin Yuanqing didn't say it was summer vacation. For scientific research personnel, there was actually no summer vacation. During summer vacation for students, scientific research personnel basically continued their scientific research projects.As for professors, many of them are invited to give lectures in enterprises, which can be regarded as earning a certain income.

For university teachers, it is not difficult to really want to engage in foreign business. You can hold training courses, lectures, go on TV or even start a company, and you can make money without losing money.

Qin Yuanqing made a project report, which was to study aero-engines. Yes, Qin Yuanqing started to work on aero-engines.

An aero engine is a highly complex and sophisticated thermomechanical engine that provides the aircraft with the power required for flight.As the heart of the aircraft, 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 technology, industry and national defense strength.

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

Regardless of the fact that China has its own self-developed J-10 fighter jet and the J-20 fighter jet that has already been tested, but it does not have its own aero-engine.

Once there is a war, it is very dangerous and it is easy to get stuck.

However, Qin Yuanqing sent a report, but was called back. The superior said euphemistically that there is already a special team in research and development, and then said a lot of things. Qin Yuanqing just smiled, because he is not in this field. Do you trust?

At present, China's two most famous aero-engine researches are 'Kunlun Engine' and 'Taihang Engine'.

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

The development unit of the 'Kunlun Engine' is Huaxia Yihang Fengtian Engine Design Institute. The development cycle lasted for 18 years, and then the test flight took as long as 8 years. It has not been put into use until now.Its successful development marks that my country's aero-engine has entered a new stage of self-development from only surveying and mapping imitation, improvement and modification. Opened a new page of self-development.

The thrust-to-weight ratio of the 'Kunlun Engine' is 7:1, the maximum outer diameter is 882mm, and the total length is 4635mm. The overhaul interval of the gas generator is not less than 6000 hours, the overhaul interval of the power turbine is 20000 hours, and the total life of the power turbine is 100000 hours. , The total life of the gas generator is 40000 hours.

But it is undeniable that the "Kunlun Engine" project was established in 1984, aimed at the second-and-a-half-generation fighter jets. Once it succeeded, it actually fell behind, and now it is replaced by J-7 and J-8 aircraft.

The symbolic meaning of 'Kunlun Engine' is greater than the actual meaning.Its appearance only means that our country can independently develop aero-engines, but it still cannot change that our aero-engines lag behind the world's advanced level.

'Taihang Engine' has been making big news over the years, which is inspiring. The "Taihang Engine" was pre-researched in 1978, approved in 1987, and completed the final design review and assessment at the end of 2005, which lasted 27 years.It was developed by the 606 Institute of Huaxia Aeronautical Research Institute, and it is the third-generation large-scale military aviation turbofan engine made in China.Taihang is known as the 'backbone of the world'.China's first high-thrust turbofan engine was named Taihang, and its significance is self-evident.

Although the latest WS-10 'Taihang' engine equipped with the domestic J-11B heavy-duty fighter has successfully completed the finalization review, marking my country's leap from the second-generation engine to the third-generation engine, but one problem can never be ignored, that is' Taihang engine' still has a lot of shortcomings. So far, the quality of the engine is still unstable, and it is still in the stage of troubleshooting.

If you give an evaluation of the current "Taihang Engine", it is that the "Taihang Engine" is barely usable, and it is not enough to be compared with the international advanced aero-engine.

Although his project report was rejected, Qin Yuanqing was not depressed. After all, he could do it himself without the research funding from his superiors. He was not like other scientists who could do nothing without research funding.

Qin Yuanqing immerses himself in the library every day, checking books in the corresponding field of aero-engines, enriching his knowledge reserves.

In each field, there is actually a big gap.

For example, automobile engines and aero 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 understood why aero-engines are so difficult, because it involves two aspects, one is basic materials, and the other is design.

Basic materials, this is simply China's weak point, because the country used to have no money and did not invest enough in basic research.The research on basic materials often requires detailed theoretical demonstrations on the possible element ratios and manufacturing processes, and then researches on the consumption of materials, continuous trial and error, and finally approaches the reasonable range step by step. The entire research and development of basic materials is very consuming. Money, the money consumed is horrific.

Especially for aero-engines, turbine blades, combustion chambers, etc., the basic materials are very important, and sometimes the difference is thousands of miles away.And once it is wrong, the loss will be very large.

Therefore, in China, except for the national team that now conducts these basic researches, none of the private enterprises dare to enter, because once they enter, they will not be able to climb up, and bankruptcy is foreseeable.

What kind of private enterprises are so powerful and powerful, let him try to do basic scientific research!The kind of people who take the national dividend to make money and point at the country to scold the country have no conscience.

Any breakthrough in advanced technology will cost the country a lot, forming sunk costs, and then the business will earn dividends.

As for the second major aspect of design, that is also a big problem. Huaxia’s start is still too late. In addition, it needs krypton gold. There was 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 taught can have a solid foundation.

Therefore, in the past imitation, we often knew what it was, didn't know why, and didn't know the principle. Therefore, although the imitation was exactly the same, in fact, there was a big deviation in performance, and we didn't know where the problem occurred.

　Recommended today, please subscribe more, give more rewards, and vote more
　　
　
(End of this chapter)