The ups and downs of life in the Siheyuan

Things went very smoothly. Three days later, Li Yuan got the news that the laboratory would move into the base in March next year.

He announced this in the laboratory that day.

“As our laboratory now has more and more projects, the staff is relatively crowded, and at the same time, additional manpower is needed in all major technical directions.

With the approval of superior leaders, we are ready to choose a new place for expansion.

The new laboratory is not only spacious but also provides dormitories.

At the same time, there is good news, that is, we will be able to allocate houses to everyone in the next few years.”

As soon as Li Yuan finished speaking, there were cheers.

Everyone's work is really crowded now. Many times, we need to queue up to use the drawing table.

Who doesn't like it if we can have a spacious environment.

Seeing everyone's happy faces, Li Yuan smiled strangely.

"However, the new place is a bit remote."

"What's the point of being a little off? The conditions are better than here!" Huang Yan was the first to support, and others responded one after another.

"The location is in Fengtai, 30 kilometers away from here."

Everyone fell silent upon hearing this.

"Director, this is too far!" Huang Yan looked like a bitter melon.

"It's okay, not everyone has to move there right away, you can stay here for the time being, and some new people have to move there first.

There will be a special bus to take everyone to the new base every week to guide the group work.

Not only does it have a beautiful scenery, but it also has a large workplace and you can often see meat in the canteen.”

I heard that there is no need for everyone to go there, and some people with families are all happy.

Li Yuan secretly laughed, just wait, once it starts to affect this place next year, these people will have no choice.

Between labor reform and scientific research, they can only choose the latter.

Finally having countermeasures, Li Yuan became cheerful.

Now that everyone's scientific research projects are on track, Li Yuan has more free time.

He pulled out the drawings of the F100 and started modeling.

The main difference between a turbofan and a turbojet is the addition of an air inlet fan and an outer duct.

A turbojet engine has only one internal duct, while a turbofan engine has two internal and external ducts.

All the air in the turbojet engine enters the combustion chamber, while part of the air in the turbofan engine flows into the outer duct, and the other part enters the combustion chamber.

The power source of the turbojet engine is the work of gas expansion, while the power of the turbofan engine comes from the work of the fan and gas expansion.

Therefore, the internal and external bypass ratio will be the difficulty and focus of the design.

The main components are the air inlet, fan, low-pressure compressor, high-pressure compressor, combustion chamber, high-pressure turbine, low-pressure turbine, afterburner and tail nozzle.

It can be seen from the above composition that the turbofan is more complicated than the turbine by just adding a fan, compressor and turbine.

However, there is a qualitative leap between the two, which is mainly reflected in the following three items:

Efficiency: The turbofan engine achieves better fuel economy and higher work efficiency through design improvements and the addition of fans and external ducts.

Structure: The turbofan engine adds a fan and an outer duct to the turbojet engine in order to improve the ability to compress air and reduce energy loss.

How it works: A turbofan engine is more like an internal turbine engine wrapped in an external duct.

When the engine is working, the airflow is sucked in by the compressor fan and then divided into two parts.

Part of it passes through the external bypass, is pressurized by a series of large-diameter compressor blades, and flows to the rear of the engine.

The other part goes through an internal bypass and goes into the combustion chamber and turbine, just like a turbojet engine.

The high-pressure cold airflow in the tail outer duct and the high-temperature and high-pressure airflow in the inner duct are mixed and injected through the tail nozzle, thereby generating thrust.

Turbofan engines are more fuel-efficient than turbojet engines, and the larger the diameter of the fan blades at the front end of the turbofan engine and the higher the ratio of the outer duct to the inner duct, the greater the thrust.

This is why today’s civil aviation aircraft basically use large-bypass turbofan engines. After all, they are very fuel-efficient.

In summary, turbofan engines have the advantages of good fuel economy and good high-altitude and high-speed performance, but they have complex structures and high prices.

Turbojet engines have the advantages of fast acceleration and simple design, but they consume large amounts of fuel and are cheap.

Passenger aircraft engines are thick and short, and are more efficient at low speeds; fighter jet engines are slender, and they are more efficient at high speeds.

The F100 turbofan engine is a fighter engine and is America's fourth-generation engine.

1968年开始策划，1970开始研发，到1974年交付第一版F100-PW-100。

It went through many revisions along the way, and by 1984, a total of US$15 billion had been spent in 11 years.

Now, his system skills book actually contains a complete set of drawings of the F80-PW-100 engine from the 220s.

Detailed notes are also made on the performance indicators of the materials used in each component.

Although there is no ratio of these materials, with these performance indicators, combined with his material chemistry skills, one day he will be able to surpass these things.

Looking through these memories, he felt like he had earned 11 billion US dollars.

Modeling is a boring process, so Li Yuan is not in a hurry. The other party has stepped on the pitfalls, and he is just copying it, which is relatively simple.

His approach is relatively simple, modeling from the inside out.

After each part of the modeling is completed, a 1:10 wooden model is carved.

Every day at home, I start carving after meals. Xiao Lele’s favorite thing is to play with these newly carved models.

Of course, he will put those modules that are too small and too delicate into the space to avoid harming little Lele.

The family of three gathered around the big table, each busy with his or her own business. Sometimes they would also talk about things in the courtyard, which was a great time.

When sleeping, Li Yuan would also massage little Lele with his weak inner breath. The biggest change was that the little guy rarely got sick.

I usually eat a lot, but my body looks well-proportioned and slender.

Under Li Yuan's constant watering, Yang Ting's skin became whiter and her figure became better.

On the belly after giving birth, the stretch marks disappeared in less than half a year. The proportions of the granary, waist and large millstone are seriously out of balance.

At night, Li Yuan liked to play; during the day, out of embarrassment, Yang Ting had to wear loose clothes.

At the end of 1965, the compound, which had been dormant for a long time, became lively again.

Yu Xiao'e and Xu Damao often fight in the backyard, and the dignified old man is often beaten black and blue by a wealthy lady.

"Damn Ezi, you are so cruel! What did I say wrong? You crazy woman."

When Li Yuangang came home from get off work, he heard Xu Damao's high-pitched shouting in the backyard.

In the past, the fights were all done indoors, and it was not easy for everyone to lean on the windows and watch.

I was kicked out of the room today, so everyone can give me legitimate advice.

"Da Mao, why are you doing this?" Liu Haizhong asked, suppressing a smile.

"Second uncle, you have to make the decision for me. Yu Xiao'e is scared to death. You want to stab me with scissors."

At this time, Yu Xiao'e also ran out, "Second uncle, you came just in time, this bitch didn't come home for two days in a row.

Yesterday I went to the work unit and asked him if he had gone to the countryside again. The person at the work unit said that he had just taken half a day off.

Today I asked him what was going on, and he actually dared to say that he was going to the countryside to play movies.

Do you think this kind of man should be beaten? "

Without waiting for Liu Haizhong to answer, He Yuzhu shouted loudly: "It should be beaten!"