Start with the aviation industry

Chapter 162 Design Verification
Yan Bing felt a little uncomfortable.

Yang Dexing's tone and attitude gave people an uncomfortable feeling.

Yan Bing's face changed slightly, and naturally he lost a little enthusiasm, "I'm telling the truth, Leihuo Technology Industry Group is indeed in front of you. After our CNC five-axis machine has finished processing the parts on the machine tool, it will first process the Leihuo Technology Industry Group. The group's two pieces of axial flow impeller, and then discharged to you."

"Hmph, I'll go find your Chief Engineer Wang."

"Whatever you want, don't give it away." Yan Bing's face also completely turned cold.

in the office.

Wang Tianfang and Lin Feng were drinking tea and chatting, and hearty laughter rang out from time to time. It could be seen that both of them were in a good mood.

"Xiao Lin, your departure is a great loss for our factory. We should have found a way to keep such an outstanding talent."

Lin Feng said modestly, "Boss Wang is serious. Anyone who leaves the earth will turn around."

Wang Tianfang said, "Your engine design and development is progressing really fast, and you have already started the design verification of some important parts."

Lin Feng said, "We design and verify at the same time, we don't wait for all the design drawings to be drawn before proceeding to verify."

This is the norm in the design and development of aero-engines.

Wang Tianfang nodded, "I have already contacted Workshop 406 about your axial flow impeller processing, and the milling of the blades should start tomorrow morning."

"Mr. Wang, thank you very much."

The two were chatting like this, when the door of the office was pushed open, and Yang De came in excitedly, and said loudly, "Mr. Wang, workshop 406 is just messing around..."

Soon, he stopped abruptly, because he saw Lin Feng sitting here.

Wang Tianfang glanced at Yang Dexing, and said lightly, "Director Yang, do you have anything to do with me?"

Yang Dexing glanced at Lin Feng, hesitated for a moment, and finally said, "We have two axial flow impellers that are about to be milled. Please call Mr. Wang and workshop 406 and arrange it immediately."

That's what happened.

Wang Tianfang said, "I've already made an agreement with workshop 406. After processing the two axial flow impellers of Leihuo Technology Industrial Group, I will immediately process your two parts."

This.
Yang Dexing was embarrassed, but in the end he still had to wait behind Leihuo Technology Industrial Group. He originally wanted to come over to join the team, but his hope fell through.

He left a little unhappy.

Lin Feng and Wuyou didn't take this matter to heart, and continued to happily chat about some things about the LH1500 turboshaft engine.

406 Workshop.

Yang Wenjie came here in person. He is now mainly responsible for the processing and manufacturing of various parts, and his position is the supervisor of process technology.

"Wen Jie, what's it like to join Leihuo Technology Industrial Group?"

"Xiao Yang, how much money do you get every month now?"

Faced with the greetings from former colleagues, Yang Wenjie smiled happily, "I think it's not bad, and I'm full of energy now, especially since the turboshaft engine we designed and developed has started the manufacture and verification of some important parts, I feel that I can't finish it." strength."

He came here this time to be in charge of the processing of these two axial flow impellers.

Not only did they bring the two actual parts, but they also brought the technical drawings and the prepared NC machining program.

Wang Qiang is the one who operates the five-axis machining center. He is equally happy, chatting happily with Yang Wenjie while making preparations for machining.

When ready, processing begins.

This CNC five-axis machine started milling the blades of the axial flow impeller. Wang Qiang had nothing to do for the time being and continued to talk with Yang Wenjie.

"Mr. Yang, this is the axial flow impeller you designed. It has two rows of blades. This is the first time I have seen it."

Yang Wenjie said, "These are the first and second integral axial flow impellers, designed by the master himself."

incredible!
Wang Qiang said with a look of admiration, "Master, he is really amazing. So far, he hasn't found anything he can't do."

While chatting like this, accompanied by Yan Bing, Zhong Jianming and Yang Dexing came over.

Yang Dexing touched his nose at Wang Tianfang's place, and after he went back, he explained it to Zhong Jianming, because these two axial flow impellers are very important to Phoenix, and they have been placed with great hopes. Come over in person.

The three walked to the front of the CNC five-axis machine, and Yan Bing said, "Master Zhong, we didn't lie to you, the machine tool is indeed processing the parts of Leihuo Technology Industrial Group."

This is also an axial flow impeller!
Zhong Jianming is an expert, and he knew what kind of part it was at a glance, and suddenly showed great interest, holding the technical drawing of the axial flow impeller to look at it.

On the process drawing, there is the blade shape diagram of the axial flow impeller, and there are also several main dimensions of the axial flow impeller. After looking at it, he felt that his eyes lighted up slightly.

Such a design is unusual.

They felt that without such technical strength, they would never be able to design such a good axial flow impeller. He had doubts in his heart, was this really designed and developed by Leihuo Technology Industrial Group, and their speed was so fast.

With such a question in his mind, he asked.

Yang Wenjie replied proudly, "Of course this was designed and developed by us. So far, the general design drawings of each unit body and the design drawings of many important and key parts have been completed, and many parts have begun to be manufactured. Carry out a series of design verifications."

There was a look of surprise on Zhong Jianming's face, and he completely forgot the purpose of his visit this time.

"Unbelievable, unbelievable!"

"I really can't imagine that Leihuo Technology and Craft Group's speed is so fast, it's just subversive!"

He is engaged in the design and development of aero-engines. It takes at least several years, even eight or ten years for a new aero-engine to go from design to production. It is normal for Leihuo Technology Industrial Group to only take one or two months. ah.

Zhong Jianming and the others are also engaged in the design and development of turboshaft engines, and started this project three years ago. Up to now, they are still trying to verify the design of some parts. The whole process is bumpy and not smooth at all.

After looking at the technical drawings of the first and second overall axial flow impellers, and asking Yang Wenjie for a while, Zhong Jianming left unsatisfied.

Yang Dexing was a little anxious, and reminded again and again, Mr. Zhong, you have to talk to workshop 406 and start processing our parts as soon as possible.

Zhong Jianming ignored him. At this moment, his mind was full of this engine designed and developed by Leihuo Technology Industrial Group.

Hexi Industrial Park.

Accompanied by Wang Yalong, Lin Feng came here again, because he had been busy drawing design drawings before, so he only came here for almost half a month.

I haven't been here for more than ten days, the changes here are really big!
The design and R&D building and the office building have already started construction, reaching the height of five floors and two floors respectively.

Construction of the first manufacturing plant is also beginning.

The construction of factories is generally relatively fast. Even though this factory has a large area of ​​more than [-] square meters, the standard is relatively high, but it is estimated that it will be capped in two to three months, and it should be delivered for use in about five to six months.

After looking around, Lin Feng said with satisfaction, "That's right, it's faster than I imagined."

The LH1500 turboshaft engine has been fully designed, and some important and key parts have already begun to be manufactured, ready for design verification. Lin Feng hopes that the construction of the factory area will be faster.

Strive to complete the project before the end of this year, just in time for the production of this engine.

As for before the factory building is completed, Lin Feng also has a solution.

Some parts that need to be manufactured can be entrusted to Fenghuang Factory for processing. If design verification is required, you can go to Fenghuang Factory. They have relatively complete test equipment and instruments.

Of course, this is temporary. After the construction of the factory area is completed, no matter whether it is parts manufacturing or design verification, there is no need to bother others. Leihuo Technology Industrial Group can do it by itself.

a few days later.

The completed first and second stage axial flow impellers were also sent to Phoenix Institute for a series of design verifications.

It is mainly to verify whether its actual performance is consistent with the designed theoretical performance. If the gap is relatively large, it is necessary to improve the design and then verify it.

Generally speaking, there are few one-time successes. Generally, it is normal to design first, then manufacture parts for verification, then improve the design, and then verify again. It is normal to repeat a dozen times.

Sometimes, it takes several years to verify the design of a certain part, and then improve and perfect the design.

in the office.

Lin Feng came over in person, and was drinking tea with Zhong Jianming while talking about design verification.

"Master Zhong, I will trouble you this time."

"Mr. Lin is very polite. We are all for the aero-engine business, and it is only natural to help each other."

Zhong Jianming's attitude and awareness made Lin Feng feel very comfortable.

In the laboratory.

Zhang Xu, director of the second design office, brought two designers in charge there, and two processed first and second overall axial flow impellers were also placed beside them.

However, related design verification tests have to wait.

The reason is very simple. Yang Dexing and the others have also processed two axial flow impellers and they are on the way to deliver them.

Logically speaking, everything should come first, first served. The two integral primary and secondary axial flow impellers of Leihuo Technology Industrial Group arrived yesterday, and the design verification test should be arranged first.

However, Yang Dexing insisted that even if the test equipment was idle there, he would not conduct a verification test for Zhang Xu and the others, but was waiting for the arrival of their own two parts.

Fortunately, the wait was not too long, and their two parts finally arrived, and Yang Dexing immediately arranged for a design verification test.

Zhang Xu and the others can only watch from the sidelines, and they need to wait for Yang Dexing and the others to complete the design verification test.

"Director Zhang, they are also engaged in the design and development of turboshaft engines, and have also manufactured two axial flow impellers."

"I don't know the performance of the axial flow impeller they designed."

Zhang Xu said softly, "Let's take a look at their design verification test first."

To be honest, he really wanted to take a look at Yang Dexing's design verification situation, because with such an idea, his own design verification was ranked behind, but he was not dissatisfied in the slightest.

Yang Dexing their axial flow impeller arrived.

He was as proud as a peacock, and he was full of confidence, thinking that there should be no problem with this design verification.

Before starting the design verification, he glanced proudly at Zhang Xu and the other three, and said loudly on purpose, "Start the compression ratio test!"

The main function of the axial flow impeller is to compress the air entering the engine. Of course, the higher the compression ratio, the better. The compression ratio of the axial flow impeller with excellent performance can reach more than 5, or even higher.

Yang Dexing and the others developed the design of this axial flow impeller on the basis of digesting and absorbing the turboshaft eight technology. The design compression ratio is 3.2, which is not high, because his technical background is limited, and he can only reach this level.

Following Yang Dexing's order, several testers and designers began to get busy, and installed one of the axial flow impellers on the test equipment. There were no problems with the beating and coaxiality of the axial flow impeller.

One of the technicians reported loudly, "Director Yang, everything is ready to start the experiment."

Yang Dexing said, "Let's start the experiment, and let our colleagues also take a look at the main performance of our axial flow impeller."

The so-called "colleagues" in his mouth are undoubtedly Zhang Xu and others.

The test begins.

Driven by the test equipment, the axial flow impeller began to rotate, and the speed became faster and faster. The speed quickly reached several thousand revolutions per minute, and continued to climb rapidly, and soon exceeded [-] revolutions.

Ten thousand revolutions, fifteen thousand, twenty thousand.
The speed climbed up to 32000 rpm before stopping. At such a high speed, the axial flow impeller made a sharp and harsh sound, and the air was sucked in and then compressed.

The rotational speed of the axial flow impeller on the test equipment, noise decibels, air compression ratio, etc. are all displayed.

The tester in charge reported loudly, "Director Yang, the speed is 32000, the noise is 112 decibels, the air compression ratio is 2.84, and the amount of air inhaled per minute.
He reported the experimental data one by one.

Yang Dexing's face was a little serious, so there was a certain gap between the data and his presets, especially the air compression ratio was not even 3, and the noise and vibration values ​​exceeded the standard.

He comforted himself, maybe it has something to do with the quality of manufacture, not necessarily a design problem.

With this in mind, he ordered, "Start the verification test of the next part."

This is why it is necessary to manufacture and process two parts, because there will be errors in manufacturing, which may have a certain impact on the test results.

in the office.

Zhong Jianming and Lin Feng had already chatted very well. He put down the teacup in his hand, looked at the time, and made a suggestion: "Mr. Lin, let's go and see how the verification test is going."

Lin Feng readily agreed, "That's exactly what I mean."

Although I know that the design verification of my two first and second integral axial flow impellers should be basically consistent with the design theory, I still want to see the results with my own eyes.

The two went out together and soon entered the verification laboratory. At this time, Yang Dexing's second part was on the test equipment and was undergoing verification.

Zhong Jianming saw something was wrong.

What he told him was to help Leihuo Technology Industrial Group do design verification for the parts first, because he is a customer, and the parts were delivered yesterday.

How do you know, it doesn't seem to be the case.

His face sank slightly, and Zhong Jianming asked, "What's going on here? Why are our parts doing verification tests first?"

Yang Dexing's face was not as thick as usual, and he didn't blush at all, but quibbled, "Master Zhong, our parts just arrived, so I arranged for verification to be prioritized."

Zhong Jianming snorted coldly, and gave Yang Dexing a dissatisfied look.

Lin Feng said, "Forget it, it doesn't matter if we wait."

Zhong Jianming gave Yang Dexing another dissatisfied look, then picked up the verification test report that had just come out on the table and looked at it.

Gradually, his face became more gloomy.

"Yang Dexing, this is the axial flow impeller you designed, what the hell are you doing?"

Yang Dexing continued to quibble, "Maybe it's a manufacturing problem, I don't think the second part will be like this."

Lin Feng glanced at the test report and thought in his heart, such data is really not that bad.

The compression ratio is low, the noise and vibration are high, it is a mess.

The second axial-flow impeller is on the test equipment, and the speed is getting faster and faster. Of course, the noise and vibration are getting bigger and bigger. When the speed reaches 32000, the noise is already very loud.

Although separated by thick vacuum glass, everyone still felt that the noise was indeed too loud, and the test data also showed it.

The speed is 32000 rpm, the noise is 114 decibels, the compression ratio is 2.78, and the amount of air inhaled per minute
Looking at these numerical controls, Zhong Jianming's face could almost pinch water.

What Yang Dexing said a few days ago sounded in his ears, Mr. Zhong can rest assured that the design of our axial flow impeller will definitely meet your requirements.

Yang Dexing made a vow.

Now, he was severely slapped in the face by the test results.

If no outsiders were present, it might be better. Now that Lin Feng, Zhang Xu and others are all around, Zhong Jianming feels ashamed and sent to his grandma's house.

Yang Dexing was finally embarrassed, his face was burning hot, the result of such an experiment was really not good, it was far worse than expected.

"Master Zhong, we."

He was about to say something, but Zhong Jianming waved his hand and interrupted, with a very serious tone, "Yang Dexing, it seems that it was a serious mistake for me to let you lead the team to lead the design and development of the compressor part."

Immediately, Yang Dexing was struck by lightning.

Lin Feng looked at Yang Dexing's extremely embarrassed appearance, and felt inexplicably relieved. He had long disliked this guy. His eyes were high and his abilities were low, and his skills were not two points. inside.

The second axial flow impeller was removed, there was no need to continue the verification test, and the entire design failed.

Zhong Jianming sighed softly and thought in his heart, who should take up the heavy responsibility next and lead the designers to continue the design and development of the compressor part.

The design verification of Leihuo Technology Industrial Group started. Zhang Xu personally communicated with the test technicians, and then the first first and second integral axial flow impellers were installed on the test equipment.

Everything is ready to start the Design Verification Experiment.

The designers of the Phoenix Institute did not leave, including Yang Dexing, because Zhong Jianming was still here and had no intention of leaving. How could they dare to leave first.

(End of this chapter)