Start with the aviation industry

Chapter 203 Visiting and Studying
They are having an important meeting.

Several copies of today's "Aviation Daily" were placed on the big conference table, with pictures and texts on the front page, reporting in detail on this turboshaft engine of Leihuo Technology Industry Group.

Director Qian presided over the meeting.

"Comrades, everyone has read the newspaper reports about this turboshaft engine."

"Looked."

"I watched it twice from beginning to end."

"I read it more than twice, at least three or four times. I really can't believe that Leihuo Technology and Industry Group can actually produce such an advanced turboshaft engine."

"."

Everyone said something, and I started the discussion, and the meeting room was full of excitement.

After several minutes, when he felt that the time was almost up, Qian Hui, the director, said loudly, "Be quiet, everyone, and listen to me."

"Everyone, as early as a few months ago, Zhou Yuanliang suggested to me that our future special-purpose armed helicopter should be powered by two turboshaft engines from Leihuo Technology and Industry Group. I have always held a wait-and-see attitude."

"Now, their turboshaft engine has entered the final assembly stage of the verification machine. I personally think that this engine can be used as the power of our future special armed helicopter. What do you think?"

That's the main topic of this meeting.

Those who are sitting here are not leaders, but experts and backbones, and they have the most say.

"I agree."

"I don't think it's a problem."

"It is said that the output power of a single engine is 1526 kilowatts. I think it is very good to install two such engines on our future special armed helicopters."

"I think it's better to send a few people to Leihuo Technology Industrial Group to investigate and learn more about this turboshaft engine."

"That's a good suggestion. There's nothing wrong with having a deep understanding before making a decision."

"."

The meeting lasted for more than an hour, and almost everyone expressed their opinions. Finally, a meeting resolution was formed, and a team was sent to Leihuo Technology Industrial Group to investigate and learn more about this turboshaft engine.

Leihuo Technology Industry Group.

Lin Feng was sitting in the spacious office. On the large desk made by hand from a whole piece of huanghuali, there was a big butt computer monitor. He was typing away cracklingly, starting to write the third part of "Harry Potter".

This is the Nth time Wu Tianhua called. Apart from telling Lin Feng how popular "Harry Potter" is, he also repeatedly said, Mr. Lin, please write the third part.

Letters from readers were like a snowflake, and the phone number of the publishing house was almost exploded, all of which were a request to publish the third part of "Harry Potter" as soon as possible.

After the parts were manufactured, the first demonstration machine entered the final assembly stage, and the design of the military transport helicopter was progressing smoothly. Lin Feng no longer had to draw the design drawings himself, and relatively speaking, he had more time.

Since the request is so strong, let’s take the time to write the third part. In any case, it means a large amount of manuscript fees, and then there will be a greater royalties in the future, which means that a large number of stocks can be bought.

So far, Lin Feng has spent more than 300 million US dollars accumulatively, holding the stocks of several large American companies such as Microsoft, IBM and Coca-Cola. In less than a year, the return on these stocks exceeded 30.00%.

The bigger gains are coming later, and after ten or 20 years, these stocks will bring very impressive returns.

In order to buy a lot of stocks earlier, Lin Feng decided to write the third part, publish it, and then meet the readers.

While writing in front of the computer, there was a knock on the door outside the office, Ding Haixia reported.

"Boss, I received an official letter from xxx Helicopter Design Institute. They want to send someone to visit our company and want to know more about our turboshaft engine."

Lin Feng stopped typing, took the official letter and looked at it.

It was clearly written in black and white, and at the end was stamped the big seal of the helicopter design institute. They wanted to send a seven-member tour group to visit, and everyone's name and position were clearly stated.

The team leader was Qian Hui, the director, and there was a familiar name among the six team members, that was Zhou Yuanliang.

The tone is very sincere, it seems to be full of sincerity, and the leader of the institute is personally leading the team.

After thinking about it for a while, Lin Feng said, "Reply to them, agree to their request, and you will take care of the reception."

"Okay, boss." Ding Haixia replied.

Lin Feng thought in his heart, it's really interesting that they actually want to come to visit and investigate, with such an open-minded attitude.

That is to say, if it is a domestic design firm, if it is a foreign company or institution, no matter how sincere the attitude is, Lin Feng will reject it.

Why should we allow foreigners to visit our aero-engine?

With a slight smile, Lin Feng crackled and crackled code words in front of the computer again, the fast-paced, line-by-line English words were formed on the computer, and the number of words in the third part of "Harry Potter" was increasing.

Assembly workshop.

This verification machine has officially entered the final assembly stage, all components have been assembled, and all spare parts are complete.

There are many people beside the assembly booth.

This is the first verification machine, and it is also the first final assembly of the LH1500 turboshaft engine. The relevant technicians in charge and the leaders of the final assembly workshop dare not be careless, and basically stay at the final assembly site throughout the process.

He Hua and Fang Anping also came over and stood by to watch the final assembly of the turboshaft engine.

Several workers are working on the final assembly of this turboshaft engine.

The compressor unit has been assembled, and they are using a dial gauge to align the datum plane and central axis of the compressor unit.

In the assembly of this turboshaft engine, the compressor unit is the reference, and it also determines the central axis of the entire engine and the assembly reference plane.

"The beating of the end face is two thousandths!"

"The beating of the inner hole is one-and-a-half thousandths!"

One of the workers reported loudly, and another worker not far away was responsible for recording and recording the data.

All assembly data will be aggregated in the future and will eventually enter the engine's history book.

"Meet the next transfer requirements and start the final assembly of the combustion chamber unit."

The technician in charge next to him checked the beating results in person, felt that there was no problem, and issued the next final assembly order.

Combustion chamber components have been assembled earlier, including inner and outer flame tubes, fuel nozzles and many other parts.

First install the combustor assembly on the exhaust end of the compressor unit, align it, and align it. This is a technical job.

Workers with rich experience and relatively high technical level are competent. The whole process is relatively slow, and several workers are meticulous.

After alignment and alignment, start to assemble the screws one by one, use a torque wrench to tighten them one by one in the order required by the process, and then check the runout of the reference hole and reference surface.

"Every jump is qualified!"

"Start cleat locking!"

Aeroengines are different from other mechanical products. Almost every screw needs to be locked, some are locked with locking plates, and some are locked with thin steel wires. As for self-locking nuts, they are rarely used in aeroengines.

Sometimes, the simplest locking method is the most reliable. Whether it is locking plate locking or thin steel wire locking, it is the simplest locking method. This locking method was widely used before World War II.

After the combustion chamber is assembled, the assembly of the combustion chamber casing is followed, which is equivalent to a cover that protects the entire combustion chamber.

The combustion chamber casing is a very complex key part, and its machining accuracy is very high, because it has many precision mounting holes, positioning holes and so on.

Throughout the morning, the combustion chamber unit was not assembled, and it was necessary to continue in the afternoon.

For the first final assembly, everyone has a familiar process, and everything dare not be careless. The assembly of this verification machine is estimated to take ten days and a half months.

After everyone has accumulated a certain amount of assembly experience and a certain technical foundation, it may not take so long. From the beginning of assembly to the completion of final assembly, it may be enough for about a week.

Phoenix Railway Station.

Qian Hui and his party of seven had already got off the train, full of hope, walking towards the outside of the station, talking and laughing.

"I heard that this turboshaft engine has entered the final assembly stage for several days, and I don't know where it is."

"I need to learn more about world-class high-power turboshaft engines."

"Old Zhou, I really envy you. You have been to Leihuo Technology Industrial Group several times."

"."

A group of people walked out of the train station while talking, and immediately saw the person who greeted them.

Ding Haixia led several people to greet them at the exit, and two of them held a banner saying "Warmly welcome seven people from XXX Helicopter Design Institute to visit Leihuo Technology Industrial Group".

"Director Ding, hello, this is our Director Qian."

"Hello, Director Qian."

The two parties met, shook hands enthusiastically, and then boarded the car to Leihuo Technology Industrial Group.

A car and a minibus will arrive at Leihuo Technology Industrial Group in about 10 minutes. The transportation is very convenient.

As soon as they got out of the car, Qian Hui's people were amazed.

"Such a tall office building!"

Ding Haixia proudly introduced, "This one is an office building, and the one over there is an aero-engine R&D building. Both buildings have 32 floors."

"it's beautiful!"

"This should be the tallest and most beautiful building in Phoenix."

Others were also amazed. In the early 90s, such buildings could only be found in provincial capital cities or large coastal cities in the inland, and there were no such buildings in the general inland prefecture-level cities.

Entering from the gate is a hall with an area of ​​at least [-] to [-] square meters. The decoration is very luxurious. The tiles on the floor can almost reflect people's shadows. The huge crystal chandelier above the head is very attractive.

"Director Ding, your office environment is really enviable."

Ding Haixia said modestly, "It's so-so."

It's a little bit of Versailles.

This kind of office environment is far more than mediocre, and it can't be found in the entire domestic aviation industry system.

The person who formally received them was He Hua, vice president of Leihuo Technology Industry Group.

In addition, Fang Anping, director of Leihuo Aviation Engine Design Institute, and several LH1500 turboshaft engine design experts.

In the huge reception room, this carpet is laid, famous paintings are hung on the walls, brand-new leather sofas, coffee tables made by precious wood and so on.

"Director Qian, welcome to Leihuo Technology Industrial Group."

Qian Hui said humbly, "Mr. He, we are here to learn, and hope to learn something from your turboshaft engine."

The atmosphere is harmonious and warm.

The two parties chatted for about two or three 10 minutes in a pleasant atmosphere, and then He Hua invited them to the prepared conference room.

Everything is ready.

The slide projector has been turned on, and hot tea has been brewed in front of each seat. At He Hua's invitation, everyone sat down one after another.

He Hua said, "Director Fang of our design institute will introduce the LH1500 turboshaft engine to you."

Fang Anping is the director and a technical expert. Besides Lin Feng, he probably knows the turboshaft engine best.

He put the first slide into the slide projector, and clearly displayed the things at the door in front of everyone through projection.

With rich pictures and texts, he began to introduce this turboshaft engine to Qian Hui and others.

This kind of introduction is of course much more detailed than the introduction materials publicly displayed, such as the main performance of the engine, basic parameters, design structure and characteristics, etc.

The meeting room is very quiet.

Only Fang Anping's voice and the voices of everyone taking notes.

Including Qian Hui, they all listened carefully and took notes carefully. This discipline was better than that of key middle school classes.

In three or four ten minutes, Fang Anping introduced this turboshaft engine to everyone in a very detailed and comprehensive manner.

Then it's time for everyone to ask questions.

If you have any questions, you can ask them. Fang Anping and other experts patiently answered them one by one.

When everyone had finished asking, and no one asked any more questions for the time being, He Hua said enthusiastically, "Time flies so fast, it's already six o'clock in the afternoon, and it's almost dark."

"We have prepared a thin banquet, and everyone will have a light meal together."

Qian Hui said, "This is so embarrassing. We are here to study. There is no reason for a teacher to invite students to dinner. Let's treat them."

He Hua smiled and said, "We are always customers when we come to the door. If we go to Director Qian of your design office next time, please treat us to dinner."

A group of people left the meeting room, boarded the car one after another in front of the office building, and then went to the restaurant for dinner.

Lin Feng didn't show up.

I have been writing the third part of "Harry Potter" in the afternoon, and then I took the time to go to the aero-engine assembly workshop to see the turboshaft engine in the assembly.

It is very gratifying that the final assembly will be completed in three to five days, and then the test run can be verified.

Lin Feng is also looking forward to how the verification test is going.

The next day.

After going to work, Lin Feng still planned to code first, and then went to the final assembly site to take a look at the final assembly of the turboshaft engine after a while.

"Boom, boom, boom!"

There was a knock on the door, and it was He Hua who pushed the door open.

Lin Feng stopped typing and asked, "Mr. He, Director Qian and his group should be going back this morning."

They mainly came to learn about the LH1500 turboshaft engine. Fang Anping introduced it to them in detail yesterday afternoon with pictures and texts.

He Hua shook his head and said, "Boss, I was just about to report to you. During dinner last night, Qian Hui proposed that he wanted to visit our aero-engine assembly workshop this morning."

The purpose of visiting the final assembly workshop is very obvious, that is to further understand this turboshaft engine and take a look at the assembly process.

This involves a lot of technology, but also involves the issue of confidentiality.

It's not that they don't worry about Qian Hui and the others, they're just in case.

With so many of them visiting together, it would be a big deal if leaks happened. After all, this is a world-class turboshaft engine.

If it is only leaked within the domestic aviation industry system, then the situation is better, in case something is leaked abroad.

Lin Feng shook his head and said, "Visiting our aero-engine assembly workshop is not allowed for the time being, at most we can visit the manufacturing workshop."

The production and manufacturing workshops are different, and what they see are some parts, even some parts are semi-finished products, or they are still in rough state, so it doesn't matter if they have a look.

"Okay, I'll tell them."

Lin Feng reminded, "You can't take pictures or record during the visit, you can only take a look, and the time is limited to less than one hour."

"Okay, everything will be done according to what the boss said." He Hua replied.

It was still He Hua who led it himself.

Qian Hui and his group of seven entered Leihuo Technology Industry Group's aero-engine manufacturing plant for the first time, and entered No. [-] and No. [-] manufacturing workshops.

I visited both workshops, and the total time did not exceed one hour.

Although it was not a long time, it was the first time they saw such a large and high-standard manufacturing plant.

It is also the first time to see so many CNC machine tools, whether it is the No. [-] manufacturing plant or the No. [-] manufacturing plant. Although the numerical control rate cannot be compared with foreign aviation companies, the degree of numerical control in the domestic aviation industry system is relatively high. of.

After visiting, Qian Hui and others left with a little bit of reluctance.

In fact, what they most want to enter is the aero-engine assembly plant.

From the outside, this factory building is larger and seems to be of a higher grade. Besides these, there is also the general assembly of the turboshaft engine inside.

It's a pity that they can't go inside to have a look.

Although there is a little regret, they are generally satisfied. At least the goal has been achieved. They have a good understanding of the main dimensions, parameters, performance, and design structure of the LH1500 turboshaft engine.

After expressing his thanks, Qian Hui took his men back to their unit by train.

On the train back, they were still talking about the trip to Leihuo Technology Industrial Group.

"It's a bit of a pity that I couldn't enter their aero-engine assembly workshop to take a look."

"Yes, it would be great if I could see the final assembly process of this turboshaft engine with my own eyes."

"I think it's okay. Now I know more about this turboshaft engine than before."

"."

A few days later.

The aero-engine final assembly plant seems to be a little different today, and the air seems to be filled with festive atmosphere.

There were also many more people at the final assembly site than usual, even Lin Feng, He Hua, and Wang Yalong came here in person, not to mention the rest of the people, the technician in charge, Fang Anping from the design office, and the leaders of the final assembly workshop all appeared At the aircraft assembly site.

(End of this chapter)