"These pipes are actually the oil line pipes on the aircraft aircraft aircraft engine. They use nickel-cobalt alloys. They use ordinary processing methods and are very difficult. If welded, the strength cannot be met very well, so..."

The leader who had just spoken to him, saw Xiao Feng pondering with a few tubes, and he explained to them.

In fact, even if he didn't say it, Xiao Feng could guess what kind of tube it was.

Because when he was at Spark Technology, he saw that engineers produced such pipes when designing and producing hydraulic torque converters.

However, the pipes produced by Spark Technology at that time were smaller and thinner than these ones, because they were installed on hydraulic gearboxes, so they naturally could not be compared with those installed on aircraft engines.

So it is naturally simpler, but the shape and working principles are not much different.

In fact, this type of oil pipeline is also very common in automobile engines, but it is generally thinner and not as high as the requirements on aircraft engines.

As a Space Marine and a half-baked military fan, and when he was in another world, he often flew helicopters to fight.

Sometimes he had to do it himself to maintain the helicopter, so he was quite familiar with the aircraft's aircraft's aircraft launch.

In the engine of an aircraft, especially in the outer part, we often see many such pipes.

However, generally there are two types of wire pipes on aircraft engines, one is hard pipe and the other is hose.

Most of the hoses are tetrafluoroethylene material, and the outer layer is wrapped with a layer of fireproof material. The assembly performance is very good, but the disadvantage is that the strength is very poor.

Only used in wire tubes wrapped in electronic systems.

There are still many fuel supply pipelines on aircraft aircraft aircraft, so this kind of hose cannot be used.

For example, it attacks the fuel supply pipe or the lubricating oil pipe, these are pipelines that often work in high temperature and high pressure environments.

And these pipelines must use hard pipes of metal materials.

Although the assembly performance of this hard tube is very poor, due to special work requirements, you must use this tube.

In order to better meet the working conditions of these pipelines, this has very strict requirements on metal processing and equipment requirements.

As for the hydraulic pipes to be used in the hydraulic system and the gas source pipes to be used in the air induced system, let alone.

Because they all have to work in ultra-high pressure environments, it is impossible to use hoses, so only this specially processed metal pipe can be used.

So we will shout a lot of these side-by-side metal pipes on the periphery of the aircraft.

The thin ones are as thick as fingers, and the thick ones are as thick as carrots. They are all very regular geometric shapes, arranged side by side at the periphery of the aircraft engine.

The main function of these pipelines is to supply oil to the engine when the aircraft engine is working.

Because Aero Engine requires a lot of fuel, considering the fuel economy, Aero Engine designers will design a set of special fuel injectors and install a set of hydraulic pumps.

Before aviation fuel is injected into the combustion chamber, let the fuel be fully atomized to achieve the best combustion economy and ensure the aircraft's range.

Therefore, this requires very high strength of the oil supply pipe and fuel nozzle.

In addition, fighter jets often perform various violent fighting actions during flight.

In order to rewind fuel, Aerospace Engines generally design special oil return oil circuits, and this oil circuit is the half-shaped pipeline we often see.

There is also the lubricant pipe that attacks lubricant, the same is true.

It is necessary to ensure that the aerospace engine can operate normally at an altitude of tens of thousands of meters and extremely cold, and no dry grinding will occur.

Then it is necessary to ensure that the oil pipe will not be frozen and can work stably under high pressure environments.

This is especially true for hydraulic pipelines in other hydraulic systems, because the vector nozzles behind must be controlled when the engine is working.

Adjust the direction of the jet, so the requirements for hydraulic pipes will be very high.

It can even be said to be the highest in the entire system.

As for the gas source tube, let alone, it is necessary to ensure that a large amount of air can be continuously sent into the combustion chamber or diverted into the duct during the aircraft engine operation.

Therefore, it is precisely because of these special work needs that these pipelines are difficult to process.

The requirements are different from those pipes on cars and transmissions. Those pipes may be enough to withstand a pressure intensity of 1.5 or twice the atmospheric pressure.

However, these pipelines on aircraft engines are required to withstand at least a dozen or even dozens of atmospheric pressures and can still work normally.

This poses a very extreme challenge to the processing of these pipes.

Moreover, the processing process of this main pipeline is completely different from that of ordinary steel pipes.

The ordinary steel pipes we see on the market are basically processed from piece by piece of iron.

First, these plates are sent to the factory for selection and cutting, and then flattened in the machine.

Then, the coffins are rolled up with rollers and finally welded at the docking point on both sides.

After welding is completed, the burrs are scraped off and grinding is done. Basically, a steel pipe is finished.

If you need to fold the light pipe into different shapes, you can also take it to the steel pipe bending machine and bend it directly.

However, if produced according to such a process, if these pipes are used on aircraft engines, they will inevitably cause the welding to break in a harsh working environment.

This will lead to serious air accidents.

We had already successfully developed J20 early on, but the production capacity has not increased.

According to reliable information, the annual output of our J20s was only 10-12 aircraft each year.

Why, the output has not been increased?

It is because the production of Aero Engine is too difficult.

The earliest batch of J20s were used by Mao Xiong's aircraft. When this fighter was released, it made the American Secretary of Defense very difficult.

But a few years later, people figured out the situation here.

It turns out that we have always wanted to replace this plane with our turbofan 15 engine, because the engine sold to us by Mao Wang always has a slightly worse performance.

The turbofan 15 has difficulties in production, although we have created a batch of high-precision five-axis linkage machine tools from a neutral country in Western Europe.

Finally, the problem of processing accuracy was solved, and the 3D printing equipment developed by a domestic university has bypassed the production threshold of some difficult parts of Aerospace Engine.

However, in the end, the blades of the internal rotor of the engine and the external pipeline production have been limited.

The rotor inside the Aero Engine is actually equivalent to a small gas turbine.

A rotor spindle, and this spindle is covered with various blades, and each blade has a very irregular curved surface shape.

The reason why it is designed like this is to rotate, cut and compress the air in a very small space and then send it to the combustion chamber.

After full combustion, ionic airflow is sprayed out, giving the aircraft super exciting performance.

The difficulty of producing rotors is a fantasy for China.

We have also encountered some AirAsia launchers before and have also seen the situation of the rotor inside.

But to be honest, we only knew the reason at that time, but not the reason.

I just got it, oh, it turns out that this is what the AVF looks like.

But we don’t know why we look like this and how we look like this.

Because there is too much knowledge about aerodynamics, and since the most powerful group of two bombs and one satellite in China fell one after another decades ago.

In terms of aerodynamics, there has been a serious gap in the gap between the domestic market.

This situation has not gradually improved until the last decade.

After many wind tunnel experiments, our scientists finally understood why they arranged the leaves in this way.

And we also have our own ideas for designing and laying out the blades.

But the question comes again, that is, even if you have your own ideas, how can you get the blades of your turbofan onto the spindle of the rotor?

Faced with this problem, we sacrificed a lot of people and finally found a clue from the United States.

It turns out that the Americans used a technique similar to the growth of single crystal silicon to "grow" this processed cavity blade on the rotor.

In fact, it can also be understood as an alternative welding method, but this method is very difficult and is currently only mastered by the United States in the world.

After the welding is successful, they will also use a particle gas settlement technology to coat the entire system.

Even if the rotor after coating is completed, its hardness and wear resistance are unparalleled.

It is precisely because of this that the aircraft engines of American fighters far surpass those of the hairy bear in terms of life, performance, and reliability.

As for our aircraft engine, it is still a bit far from the level of the above two companies.

As for the aircraft engine of the Mao Bear, it is relatively simple and crude when it is made.

They would produce a high pressure chamber and then have workers wear special compression suits, using a very special welding technique.

Inside the high pressure chamber, weld the blades to the rotor.

This is also the information we got from Ukrainian aircraft design experts after we later broke through Ukrainian assets.

It is precisely because of this information that we have made breakthroughs in the research, development and production of turbofan 15.

But overall, because the production of certain key components is too difficult and we lack relevant equipment, the production capacity is still not up.

Today, the general asked Xiao Feng and the others whether their industrial robot could produce such pipes.

Actually, it's just a test!

At this time, after Xiao Feng was slid into the tube in his hand, the smile on his face became bigger and bigger.

That's it? I thought it was such a big deal!
Chapter completed!