Start with the aviation industry

Chapter 217 Design Verification of Helicopter Components Begins

The Grand Cherokee parked in front of the Thunderfire Helicopter Design building.

Zhao Mingzhi and several people were already there to greet him.

"Hello, boss."

Lin Feng nodded, waved his hand and said, "Go to your office, I want to listen to your report."

This time I came to the Helicopter Design Institute mainly to listen to the design progress report, and then I will take a look at some drawings that have been designed. Some important parts are ready to be manufactured for design verification.

The crowd crowded around Lin Feng and went upstairs like stars praying for the moon. After sitting down in the office, Zhao Mingzhi reported the progress of the design in detail.

"Boss, the design of this helicopter has entered the final stage of design. There are only 287 design drawings that have not been completed. The design drawings of all key and important parts have been drawn, blueprinted, and filed."

After a detailed report, he said confidently, "We will be able to complete the overall design work in about 40 days at most."

It only takes up to 40 days, which is a little earlier than Lin Feng expected.

Lin Feng nodded in satisfaction, got up and said, "Go, go to the reading room, I want to take a look at some of the design drawings in person."

We went to the reading room again.

There are several large tables in total, and each table is enough to spread out the largest zero-scale design drawings.

We know that a helicopter is mainly composed of the body and lift (including rotor and tail rotor), power, transmission and airborne flight equipment.

Lin Feng of the lift system has already seen the main design drawings, which are exactly the same as those provided by the system in his mind, so there is no need to read them again.

Lin Feng said loudly, "Bring me the blueprint of the machine body design, I want to take a closer look."

The overall design of the airframe was drawn by Lin Feng himself, but the fuselage, cabin, landing gear, tail section, etc. were all drawn by the designers according to the overall design of the airframe.

These design drawings were found. First of all, the design drawings of the engine room were laid out on the big table. Lin Feng looked at them carefully, nodded in satisfaction, and there was no problem.

Then I looked at the design drawings of the fuselage, landing gear, and tail section, and there were still no problems. It seemed that the design quality of the helicopter was very high, and Lin Feng became more at ease.

The biggest feature of the fuselage design of this helicopter is the application of composite materials. For example, the main structure of the helicopter adopts composite materials. Compared with other helicopters, the application ratio of composite materials has increased significantly, accounting for 42% of the weight of the airframe structure.

Then, Lin Feng looked at the helicopter's stability and control device, fly-by-wire and light-by-light control system, strapdown inertial navigation, satellite navigation equipment and integrated navigation design.

I also read the design drawings of communication, identification and information transmission equipment, electronic countermeasure equipment design drawings, etc.

This helicopter adopts multi-functional integrated display technology, replaces a large number of individual instruments with a small number of multi-functional displays, and displays the flight information of the helicopter through keyboard control. and other information for integrated processing and integrated control.

One of the biggest design features of this helicopter is that a large number of integrated electronic devices are used, which greatly simplifies the layout of the helicopter cockpit and instrument panel, the system components are simplified, and the weight is greatly reduced.More importantly, it greatly reduces the pilot's workload and improves the aircraft quality and performance of the helicopter.

Lin Feng arrived at the Helicopter Design Institute around [-]:[-] am and did not leave until after lunch.

In addition to listening to Zhao Mingzhi's report and looking through a lot of design drawings, he also deployed a series of tasks, such as completing the design work as soon as possible, and starting the design verification of some key and important parts as soon as possible.

Which key components need design verification?

Zhao Mingzhi and the others are not bad, they have already drawn up a list of parts that need to be verified by design.

What they didn't expect was that after reading the list, Lin Feng crossed out at least two-thirds of the parts with a swipe of the pen.

Such complicated design verification is not necessary, as long as a small number of very important parts are designed and verified.

In fact, Lin Feng's inner thought is that it is better not to do the design verification of the parts, but to do the design verification of the whole machine directly. Isn't it good?

Can save a lot of time, save a lot of manpower and material resources.

But in the end, I didn’t do this, mainly because I was afraid that it would be too shocking. Others have worked hard to do design verification, and some took several years. It doesn’t make sense for you to not do design verification of a single component.

So some very important parts were left for design verification. Anyway, if there is no accident, they will pass at one time.

At around 02:30 in the afternoon, Lin Feng left the Helicopter Design Institute.

The car drove slowly out of the gate, and Lin Feng waved his hand, "Go to our helicopter factory, I want to see the progress of the construction."

Although I listen to the construction progress of the helicopter factory basically every week, I haven't been here for more than a month.

Seeing it with your own eyes is definitely more intuitive than listening to the report, and you can understand it more comprehensively.

Chen Wei, who was driving, nodded slightly. After driving to an intersection ahead, he turned the steering wheel, and the car turned left, heading for the helicopter factory.

Not far.

10 minutes later, Lin Feng could already see the helicopter factory under construction through the glass.

Great location.

The gate of the factory is the main road of the park. The magnificent gate of the factory has been completed, and there are already several security personnel standing guard.

They are all veterans, and their posture is straight.

Seeing the car approaching, they all saluted and paid attention.

Lin Feng nodded in satisfaction, knowing that the security personnel recognized the car, "Tang Long, you have done a good job."

It is estimated that in normal times, the security department often requires that all security personnel must firmly remember the appearance of Lin Feng, the boss, and the appearance of this car.

Tang Long said modestly, "Boss, to protect your safety and the company's safety, this is what we should do."

Driving in from the factory gate is still an open vestibule area. The planned layout of the factory area is similar to that of Leihuo Aero Engine Company.

On the left is a beautiful office building with a height of 28 floors. On the right is the Leihuo Helicopter Design Institute. It has a large area of ​​more than 300 acres and consists of several buildings of different heights.

There are not only design buildings with more than ten floors, but also some professional laboratories. The height of the test buildings is about three to five floors.

There are huge factory buildings on both sides of the straight and spacious factory avenue, which are the helicopter manufacturing factory and the helicopter assembly factory.

Several manufacturing plants have been capped, and the installation of internal water, electricity and air is in progress, and some professional manufacturing equipment has begun to enter the site for installation and debugging.

On the open space at the entrance of each manufacturing plant, there are large packing boxes, some of which are the size of a standard container, which are purchased equipment for the professional production of helicopters.

The largest and most conspicuous one is the helicopter assembly plant.

180 meters long and 120 meters wide.

The total area is 21600 square meters.

The height of the factory building is also obviously higher than those of the manufacturing factories. It not only looks huge, but also looks a little gratifying.

There are not many such huge factories in China.

Lin Feng walked along the straight and wide main road in the factory area while watching the progress of the construction here.

When passing by the door of one of the helicopter manufacturing plants, I went in to have a look.

In the factory building, the green epoxy resin floor has been finished, and it is so smooth that people can be seen. Some workers are drawing lines to draw the passages and manufacturing areas in the factory building one by one.

Walking into another factory building, the progress of this manufacturing factory building is faster. Not only the ground has been completely completed and the lines have been drawn, but some manufacturing equipment has already begun to be installed.

Several workers are unpacking, and there are several workers and technicians, as well as a large crane.

This container-sized wooden packing box is opened, and inside is a gantry CNC milling machine with a maximum stroke of 20 meters, which can process those large parts on the helicopter.

The packaging box is full of eye-catching English. This is an imported equipment that cost more than 200 million yuan, and it is also one of the key equipment for helicopter manufacturing.

After walking around several manufacturing plants and looking around, Lin Feng also walked into the helicopter assembly plant.

Such a large factory building is a big project.

Its construction progress is also a little slower. Although the factory building has been capped, the ground is still a concrete floor, and the epoxy resin floor has not yet been done, and the wiring and pipelines of the factory building have just begun to be installed.

Time flies.

If you look at it casually, more than two hours have passed. After Lin Feng came out of the assembly plant, the sun was already a little westward.

Not in a hurry to go back for now, Lin Feng continued to walk forward and saw that the land was being leveled ahead.

The management committee of the park has expropriated this area, and after the land is leveled, a heliport will be built here.

The helicopters manufactured by Leihuo Helicopter Factory in the future will test flight, park, take off and land here.

After looking around, Lin Feng has more confidence in the Leihuo Helicopter Factory, especially the factory building, which is estimated to be put into use in one or two months.

Phoenix factory.

At the manufacturing site, there is a part being processed. If someone from the Leihuo Helicopter Design Institute is here, they will definitely recognize it at a glance. This is the propeller hub.

The propeller hub is one of the most important and critical parts on a helicopter.

Titanium alloy material, the structure is relatively complex, and the processing accuracy is relatively high.

This is a [-]D CNC milling machine, milling this part.

Li Rongfeng, the operator, felt a little drummed in his heart and didn't have much confidence, because it was his first time working on such a part, and this part was so important.

"Don't worry, as long as you strictly follow the process steps and process parameters, there will be no problem."

A total of two technicians were following the first piece, and one of them was a technician from Leihuo Technology Industry Group. He gave Li Rongfeng comfort and encouragement.

After more than three hours of processing, this process is completed.

The parts were taken off from the CNC milling machine, inspected for appearance and size, and all passed. Li Rongfeng felt unreal, did he pass it?

With such a complicated part, I originally thought that there would be some problems.

The processing of the first part is qualified, and then the processing of the second part is started.

Since a few days ago, some key and important parts of the transport helicopter have been processed and manufactured, and they will be used for design verification.

Most of the parts are processed by Leihuo Aero Engine Company, a few parts are processed outside, and relatively small parts are processed in Phoenix Factory, such as the propeller hub just now.

Some larger parts are processed in other domestic aviation industry enterprises, such as composite material rotors for helicopters.

A helicopter factory.

A new type of composite material rotor is processed here, and several workers are busy operating in strict accordance with the process regulations.

They dare not be careless.

As you already know, this is a composite material rotor for a new domestic transport helicopter, designed and developed by Leihuo Technology Industry Group.

Some key and important parts of the helicopter started to be manufactured, and Lin Feng has been paying attention to their manufacturing status.

It has been repeatedly emphasized that it must be carried out in strict accordance with the process regulations.

For each of these manufactured parts, Leihuo Technology Industry Group provides manufacturing process regulations, and these manufacturing processes are all from the system, which is very scientific and reasonable, and the operability is also very strong.

Knowing this, Lin Feng repeatedly emphasized that the process must be followed without any deviation.

The LH1500 turboshaft engine is being manufactured at full capacity, and some key and important parts of the transport helicopter have also begun to be manufactured. The entire Leihuo Technology Industrial Group seems to be busy and developing rapidly.

The number of employees has been increasing.

The human resource department continuously recruits various personnel from all over the country, including technicians, managers, and a large number of skilled workers.

in the office.

As soon as Lin Feng finished a report call, Hu Xiaoxiao gently pushed the door and walked in, gently placed the brewed honey citron tea on the big desk, and then gently backed out, as if worried about disturbing Lin Feng work.

Holding this cup of warm honey citron tea, Lin Feng took a sip, it was really sweet.

Then, while drinking tea, he began to read a book seriously.

It has become a habit to insist on reading books in my spare time at work. If I don’t read a book one day, I will always panic.

Time passes day by day.

When it came to August, the design of the helicopter was fully completed, and all the design drawings were archived.

All parts that need to be verified by design have entered the manufacturing stage, and the fastest ones should be the composite rotor and propeller hub.

By August 1992, 8, the design verification of the rotor and hub was ready to start at a helicopter design institute.

Certain laboratories and test equipment of Leihuo Helicopter Design Institute are still under construction, and such design verification cannot be done for the time being, and this helicopter design institute happens to have a rotor test tower.

The person in charge of the test is Zhou Yuanliang, a well-known helicopter power system design expert of the Institute.

"Mr. Zhou, the composite rotor and hub of Leihuo Technology Industry Group have arrived at our unit."

"Really, their speed is really fast, let's go, let's take a look."

Zhou Yuanliang got up excitedly, left the office, and walked towards the rotor test tower with big strides.

This is the open-air rotor test tower.

The composite material rotor of the future special-purpose medium-sized armed helicopter designed and developed before was developed by the team led by Zhou Yuanliang and tested here.

Zhou Yuanliang could vividly recall the test scene at that time, and it was very clear in his mind.

It was a very successful experiment.

He even remembered the test data. On the day of the test, not only all the leaders came, but also many technicians were watching.

Thinking of the scene at that time, an inexplicable sense of pride rose in his heart.

The composite material rotor of Leihuo Technology Industry Group will also be tested here. He has a little expectation of what kind of test results will be.

From a long distance, he saw a large truck parked not far from the rotor test tower, and some workers and technicians were busy.

Seeing Zhou Yuanliang approaching, many technicians greeted him proactively.

"Mr. Zhou, hello."

"Mr. Zhou, this is the composite rotor designed and developed by Leihuo Technology Industrial Group."

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Faced with everyone's initiative, Zhou Yuanliang just nodded his head, his mind was completely on these composite rotors.

After a few steps to the side of the truck, his eyes were quickly attracted by the composite rotors.

Inside the door to see the door, the layman to watch the fun.

He is an expert, an expert in this field, and after just one glance, he found that these composite rotors were extraordinary.

The appearance is beautiful, like a work of art, and the shape is also very special, which is quite different from the composite rotor he designed before.

"be careful."

"Slow down, slow down, put it here for now."

A competent technician personally directed the workers to carefully unload the rotors from the truck.

"That's the paddle hub."

"It looks like our common propeller hubs are completely different."

"Really, it looks extraordinary."

After the composite material rotor was carefully transported, many people discovered the propeller hub made of titanium alloy and processed like a work of art.

The propeller hub is undoubtedly one of the most important and critical parts on a helicopter.

It has a complex structure, high precision requirements, and very difficult processing.

The lift required by the helicopter, hovering, inverted flight, side flight, etc. are all realized through it to control the angle of the rotor, and it may be subjected to tens of tons of force during work.

Zhou Yuanliang led his technical team to design and develop the propeller hub of future medium-sized special armed helicopters.

The design work has been basically completed, and has entered the stage of design verification. So far, several design verifications have been carried out, and the situation is very unsatisfactory.

Either there is a crack, or the performance is not up to standard, or the life is too short.

All kinds of problems made him feel overwhelmed.

Even more than once, the idea of ​​going to Leihuo Technology Industrial Group to ask for advice came up more than once.

This is the propeller hub designed and developed by Leihuo Technology Industrial Group.

He looked a little excited.

After watching for a minute or two, Zhou Yuanliang waved loudly, "Xiao Li, move this paddle hub to my office."

what!
The others looked astonished, and they didn't understand what Zhou Yuanliang was doing, and why he had to move the paddle away, and moved it to his office.

(End of this chapter)