Start with the aviation industry

Chapter 163 There is no difference without comparison

"Theirs are also axial flow impellers."

"The design is very strange. How come there are two-stage axial flow blades? I just don't know how the performance will be."

"It's probably not much better."

"."

The design technicians of Phoenix Institute were talking quietly, and some words reached Lin Feng's ears.

Lin Feng smiled slightly, whether the performance is good or not, we will know later.

Zhong Jianming also heard these whispered discussions, coughed lightly, and immediately, these designers shut up one after another, not daring to make irresponsible remarks.

"Mr. Lin, this is the axial flow impeller you just told me about. It is the overall design of the first and second axial flow blades. It must have good performance. As for the specific performance parameters, can you talk about it?"

The overall design of the two-stage axial flow blade!

Those who are knowledgeable know that such a design is very difficult, because the combination of two-stage axial flow blades involves a series of technical problems, such as air disturbance, surge, noise and vibration.

If you don't have a certain technical strength, you should obediently adopt the design of the first-stage axial flow impeller. Although the compression ratio is lower and the efficiency is lower, it is relatively more difficult and brings fewer problems.

Lin Feng looked confident. This is something designed by the system. There must be no problem. Not only will there be no problems, but it will be very good.

"Yes, this is the axial flow impeller we designed. It adopts the overall design of the first and second axial flow blades. It is made of TC-6 titanium alloy. The theoretical air compression ratio is 10.6. The design noise is not higher than 90 decibels, and the working speed is 52000 rpm. "

Every piece of data is so rare that there is no need to look at any technical information, Lin Feng blurted it out without any mistakes.

Zhong Jianming was surprised.

Looking at Lin Feng with disbelief, "Boss Lin, I heard you right, the working speed is as high as 52000 rpm, and the compression ratio has even reached 10.6. I really can't believe it."

When the two were chatting in the office just now, Zhong Jianming did not inquire about the performance parameters of this axial flow impeller in detail, because he felt that the axial flow impeller designed by them should belong to the same technical level.

People didn't ask in detail, and of course Lin Feng didn't go into details, otherwise he would be suspected of bragging.

Yang Dexing kept his head down all the time, and being criticized by Chief Master Zhong in front of so many people, he felt very humiliated. He seemed like an eggplant that had been wilted by frost. Now, he regained his energy all of a sudden.

He thought to himself, it's just bragging and not drafting. How could Leihuo Technology and Industrial Group design such an excellent axial flow impeller, and the western developed countries are no more than that.

"Hehe, it turns out that the axial flow impeller you designed is so awesome, so I have to take a good look at it."

The tone was full of disdain, full of cynicism, anyone could hear it.

Lin Feng was not angry either, speaking with the facts was the best way to fight back, it was meaningless to argue with Yang Dexing now, and he would also lower his status.

"Director Zhang, let's start the verification test."

Everything has been prepared long ago, Zhang Xu has been waiting for Lin Feng's instructions, just now he heard Yang Dexing's sarcasm, and he was suffocating in his heart.

Hearing Lin Feng's order, he immediately signaled the experimenters to start, and soon, the experimental equipment started working.

The speed of the centrifugal impeller on the equipment gradually increased, and it broke through 10000 revolutions in a short time, and the speed has been rising at a high speed.

10000 rpm, 20000 rpm, 30000 rpm.
The speed did not continue to climb until 52000 rpm, and it stabilized at this speed. The test equipment displayed various data. As the speed stabilized, these data also stabilized.

The speed is 52000 rpm, the compression ratio is 10.48, the noise is 82 decibels, and the air intake per minute.
Everyone is silent.

At the beginning, there were still people talking, but at this moment, no one spoke, and everyone's eyes were on the data display on the test equipment.

this, this, this
how could it be possible!
Several technicians were even more stunned, with shock on their faces!

The compression ratio was as high as 10.48, and it was the first time they saw an axial flow impeller with a compression ratio exceeding 10.

What is the compression ratio of the axial flow impeller designed by Phoenix? It is only 2.78, not even 3.

All-round crushing.

Whether it is compression ratio, noise, or vibration value, there is no comparison as to the amount of air intake.

"There must be something wrong with our test equipment!"

Yang Dexing was the first to yell. He couldn't believe that Leihuo Technology and Industry Group could design such an excellent axial flow impeller.

Zhong Jianming glared at him dissatisfied, and reprimanded, "Get out, get out now."

It would be a complete embarrassment to stay here, Zhong Jianming felt ashamed.

Yang Dexing didn't want to leave, and shouted, "There must be something wrong with the test equipment. I don't believe such data."

Lin Feng waved his hand, "The second axial flow impeller is ready for design verification test."

After a while, the test equipment stopped, and the first test report was released soon, and several test technicians dared not sign it. Such data is really amazing.

Preparations for the second test were quickly completed, and the test equipment started to work again, with the speed reaching 52000 rpm, and various test data stabilized, which were similar to those of the first test, with little difference.

Many people couldn't believe it!
Such data, they have only seen in their lives!

Zhong Jianming was slightly stunned, but he quickly realized that there was even a bit of excitement on his face.

"Boss Lin, your design is so good!"

Lin Feng said, "Just now there were people clamoring that there was something wrong with the test equipment."

Zhong Jianming glanced at Yang Dexing and reprimanded, "Get out!"

Yang Dexing walked away disheartened, his face burning hot.

The experimental equipment gradually stopped, and there was warm applause in the laboratory, and Zhong Jianming was the first to lead the applause.

The applause gradually subsided, and Zhong Jianming said in admiration, "Mr. Lin, it seems that you are far ahead of us."

Lin Feng smiled, and he was in a good mood. Judging from this design verification, there is no problem with the system design, and it is so excellent.

This means that the design verification of the LH1500 turboshaft engine can be greatly simplified. Even if there are a few design verifications, it is estimated that they will be passed at one time, which saves a lot of time.

It just hangs up!

Others have to spend a lot of time, a lot of manpower and material resources to carry out a series of tedious and complicated design verification, and even fail again and again, but Lin Feng does not need it.

After the design drawings are completed, it is estimated that the production and manufacture of formal parts can start, and then the assembly of the first engine.

Even if some components need to be verified, they have been completed in the process of drawing design drawings.

The result of the design verification just now made Lin Feng feel relieved.

Next, these two axial flow impellers will undergo a series of other design verifications, but Lin Feng basically doesn't need to worry about it anymore, because basically he already knows the verification results, and he will definitely pass them one by one, and hand over the design verification to Zhang Xu They'll be fine.

Phoenix office, staff canteen.

Yang Dexing bought a meal and sat there eating absent-mindedly. There were several colleagues sitting next to him, two of whom were chief designers like him.

"Old Yang, what's wrong with you, you sighed."

"Oh, forget it."

"If you have anything to say to the big fire, don't be bored in your heart."

"That's right, it might be better to say it out, and we can also help you refer to it and come up with some ideas."

Yang Dexing talked about the design verification yesterday, and then said unconvinced, "It's really hell, why is their design so good!"

A chief designer said in surprise, "Old Yang, are you not mistaken, how could there be such an excellent centrifugal impeller."

Yang Dexing said, "I hope there is something wrong, but the verification tests of the two axial flow impellers are basically the same, so there should be no mistakes."

Everyone was shocked!
This is a little bit beyond their imagination.

Everyone is engaged in aero-engine design, of course they know what such data means!
"If the data is real, then Leihuo Technology and Industry Group may have to launch a satellite."

"Yeah, once their turboshaft engine is developed, it is estimated that the entire aviation industry will be shaken."

In addition to being surprised, they were still surprised.

At the same time, everyone became curious about Leihuo Technology Industry Group, wanting to know more about this company.

So, you said something, I said something, they chatted very enthusiastically, and some people even said jokingly, "Just two days ago, people from Leihuo Technology Industry Group approached me in private, hoping that I would change jobs and offer a job offer. The remuneration is also quite considerable, do I want to go there or not?"

"If it were me, it would definitely be in the past. Participating in the design and development of such an engine will also be a great blessing in life."

Phoenix Factory, Army Representative Office.

Zhong Zimin, the representative of the general army, is listening to a report from a military representative below, saying that Leihuo Technology Industrial Group is designing and developing a very good turboshaft engine.

"Mr. Zhong, it is almost certain that this turboshaft engine is very good. I heard that the power level has reached 1500 kilowatts. Their design progress is very fast. Some important parts have been manufactured and design verification has begun."

"Just two days ago, the axial flow impeller designed by Leihuo Technology Industrial Group was tested in Phoenix Institute, and the test data was very amazing."

After listening to the report, Zhong Zimin stood up and walked back and forth in the office. After two or three thirds of the time, he stopped and asked in a deep voice, "Is the situation reliable?"

Something big, a turboshaft engine of the 1500 kW class!

Zhong Zimin had to be very cautious, this kind of thing can't be an oolong, even though the army representative repeatedly emphasized that the matter was true, he asked again.

"Mr. Zhong, I can assure you that this is true. You can even ask Zhong Jianming, the model chief engineer of the Phoenix Institute. He is also very clear about the situation."

Both of them were surnamed "Zhong" and their relationship had always been good. Zhong Zimin nodded and picked up the phone to call.

During the phone call, he inquired carefully. The call lasted at least 10 minutes before he put down the phone.

The matter is true!

He quietly took a few deep breaths, and said in his heart, this is the turboshaft engine that our military has dreamed of!

With it, future medium-sized and even heavy-duty gunships are not a dream, and even large utility helicopters are not a dream.

Armed helicopters are now the weak point of the military. The domestically produced armed helicopters are the leading role of Wuzhijiu, and the number is not large, but compared with the armed helicopters of Western countries, the gap is too big, too big.

No way, the military has been working hard to buy better armed helicopters, but this road has been very difficult.

The high-level military has also considered the medium-sized armed helicopter project, but suffers from the fact that there is no turboshaft engine worthy of the task.

Now, it seems to see the light of day.

A 1500-kilowatt-class turboshaft engine!
With it, medium-sized and heavy-duty armed helicopters in the future are not a dream. Zhong Zimin firmly believes that with it, the military will dare to establish a new generation of armed helicopters.

He walked back and forth in the office for several minutes, then stopped and said, "Xiao Liu, do you want to report the situation?"

Army representative Xiao Liu arrived, "I think it can be reported."

"Well, you're right." Zhong Zimin said, "But before reporting, we need to learn more about this engine."

Further understanding is necessary, otherwise, when the higher-ups asked detailed questions during the report, it would not be good for him, Zhong Zimin, to ask one by one.

Lin Feng didn't know that his turboshaft engine had attracted Zhong Zimin's attention. If he knew, he would be a little happy.

It's a good thing to be paid attention to by the military!
Where is the future market for this turboshaft engine? There is no doubt that it must be the military.

Its main use is also for military use. After all, the possibility of civilian use is relatively small. Besides, it is estimated that the military is not willing to use such a good engine for civilian use.

Lin Feng didn't know that he had attracted attention. At this time, he was driving to the provincial capital.

Two days ago, I received a letter from my younger sister, Lin Lan. She said in the letter that my brother is a big liar, and he promised to come to school to see me often, but it has been more than a month since school started, and he never came.

It happened to be relatively free today, so I took the time to go to Jiangnan University to see my sister. It's not too far anyway, it's just in the provincial capital, and it takes more than an hour to drive there.

At about 09:30 in the morning, Lin Feng drove into Jiangnan University.As expected of a key university in the country, the campus is really big, Lin Feng almost lost his way, asked several classmates, and finally arrived at the door of No. 7 dormitory.

This is the girls' dormitory. Lin Lan wrote that she lives in room 306 of the girls' dormitory.

The current university is still relatively conservative, far from being as open as later generations. It is impossible for boys to enter the female dormitory. Lin Feng can only register as a visitor at the door of the dormitory, and then ask the dormitory aunt to go up and call for someone.

Another bad luck, Lin Lan is not there, there is no one in the whole dormitory, it should be gone to class.

"Young man, your sister and the others should have classes, so you can only wait a little longer. If you only have the first or second class, you should be back soon."

Lin Feng said, "Thank you, then I will wait here."

The jeep was parked at the gate of the dormitory. Lin Feng just waited patiently in the car. After waiting for about ten minutes, the students came back in twos and threes. They should have finished the first and second classes.

With sharp eyes, Lin Feng quickly saw Lin Lan.

She was holding a few books, talking and laughing with some female classmates.

Lin Feng got out of the car quickly, walked over a few steps, and shouted happily, "Lin Lan, Lin Lan!"

After shouting like this, Lin Lan saw him immediately, and trotted over happily, "Brother, you are really here."

Lin Feng smiled and said, "You've already called me a big liar, if you don't come again, you don't know what to call me."

Lin Lan giggled.

At this time, her classmates also came over, and one of them said, "Lin Lan, this is your brother."

Lin Lan said proudly, "Yes, this is my brother, he came to see me today."

"Handsome guy, we often hear Lin Lan mentioning you."

Lin Feng said enthusiastically, "How are you all? Lin Lan often mentions you, saying that you are her best friend."

Everyone likes to hear such good words, and these few classmates of Lin Lan showed happy smiles on their faces.

Lin Lan smiled and gave her brother a white look, and said in her heart, big liar, I thought I never mentioned my classmates to you.

Lin Feng, as if he didn't see Lin Lan's eyes, was really happy to see his sister, and waved his hand, "Lin Lan, show me your campus, how about it?"

It's still early, so let's take a walk around the campus first, chat with brothers and sisters, and then have lunch together at noon.

Lin Lan gave the textbook in her hand to one of the classmates, and smiled, "Brother, it's okay to show you around our campus, but you have to take me to a big meal at noon. I'm tired of eating in the cafeteria all day."

Before Lin Feng could answer, a female classmate said jokingly, "Lin Lan, you and your brother are going to have a big meal, so don't forget about us."

Lin Lan said, "Don't worry, we will have lunch together at noon."

She knew that her brother was not short of the money, so she readily agreed.

All of a sudden, her classmates were happy.

One of the long-haired female students said, "Handsome guy, really, really treat us to a big lunch at noon."

Lin Feng said, "Of course, you are waiting here in the dormitory. At noon, I will ask Lin Lan to call you together."

Then, the two siblings walked around the campus.

Lin Lan was as happy as a lark, introducing their beautiful campus and talking about her situation in the university.

College life is beautiful, especially in the early 90s, college students have not been fascinated by online games, they are innocent, full of dreams and passion.

Lin Lan is also full of dreams.

"Brother, I have already made up my mind. When I graduate from college, I will go to school as a teacher and teach children to read."

Lin Feng smiled and said, "You are not a demonstration major. You are a finance student. If you are a teacher of something, you'd better find a bank and find a stable job."

"No, my dream is to be a teacher."

Lin Feng's eyes were full of doting, "Okay, okay, I listen to you, after we graduate, we will become an honorable people's teacher."

"Hee hee, I knew you were the best for me, brother." Lin Lan hugged Lin Feng's arm and acted coquettishly, just like the two siblings when they were young.

"Lin Lan, it's really you, who is he!"

A voice rang in the ears of the two of them, Lin Feng looked over quickly, and there was a boy standing not far from him, looking at him with unkind eyes.

(End of this chapter)