One Thousand Five Hundred and Two Easily Solved

When it comes to the engines used by fighter jets and helicopters, there are actually differences, and the differences are not small.

Fighters use turbofan engines, which work on the principle of different levels of turbines at the front end.

When working, a large amount of air is sucked in, and then part of the air will pass through the compressor, go through the inner channel, and be sent to the combustion chamber.

After burning, it is ejected from the nozzle.

The other part of the air goes through the external duct and is sprayed out directly.

And fighter jets rely on these two types of jets to obtain a reaction force and thus gain forward momentum in the air.

Helicopters are another matter entirely.

Helicopters use turboshaft engines, which work on a similar principle to turbofan engines.

It's just that because helicopters don't need to be as fast as fighter jets, the connotation and design of helicopter engines are different from turbofan engines.

Because the connotation of the helicopter is to improve the inhomogeneity of the airflow field so that the air can be fully burned in the combustion chamber.

In addition, a multi-functional air inlet should be designed to avoid dust and gravel in the air from entering the combustion chamber and directly damaging the combustion chamber.

And at the tail of the turboshaft engine, there is also an output shaft, which is also linked to a bearing.

And the top of this bearing is connected to the propeller.

In this way, the turboshaft engine is working to allow the helicopter to obtain a forward flight power, and at the same time, the output shaft will drive the propeller to rotate, so that the helicopter can obtain an upward lift.

This is how turboshaft engines work!

In terms of turbofan engines, we have gradually caught up, but in terms of turboshaft engines, we are still far behind.

For example, after we first introduced the Black Hawk, we dismantled and borrowed the Black Hawk's engine and wanted to copy it.

It's a pity that the final result is that when you take it apart, you are dumbfounded, and you don't understand the principle of this engine at all.

What's even more exaggerated is that in the end we actually wanted to restore it and put it back together.

I can't put it back on.

Later, we simply dissected this engine and conducted research, but it was only when we discovered that the distance between the Americans and us was really disappointing.

For example, the bearings used on the civilian version of Sombra can be as high as 6 wires.

In the severe cold area with high altitude like Qinghai-Tibet Plateau, it can work continuously for thousands of hours without deformation.

It does not affect the performance of the helicopter at all, but our copycat version, let alone work for thousands of hours.

After working for more than 100 hours, it was sent directly to the factory for overhaul.

The gap in the material alone is enough to make people desperate.

Later, we also put a lot of effort into the materials, and finally figured out what alloy the Americans used to make this kind of bearing.

But with the materials, the processing began to make people feel difficult again.

As far as the accuracy of these 6 wires is concerned, we can't do anything.

You must know that the bearing itself is made of titanium alloy mixed with chromium and nickel. This special alloy is very hard.

With an ordinary five-axis machine tool, your tool is not hard enough, and it cannot be processed at all.

Even if you buy a tool that is hard enough, the gantry and fixtures of ordinary machine tools cannot withstand the huge stress brought by high drilling speed.

The most popular ones are even the accidents of machine damage and personal injury due to excessive use of machine tools.

In the end, we had to suspend the research and development in this area, after all, it is really impossible!

But looking at Zhi 20 over there, and the next generation of armed helicopters, they are still waiting to be fed.

In the end, we could only endure it, and started a 'cooperation' with the French.

But to be honest, since then, our military has also changed its thinking.

After all, in terms of helicopters, the technological gap between us and Russia and the United States is too great.

If we bite the bullet and continue, it is very likely that we will always fall behind others in the next few decades.

So why not simply, let's work on tanks, as for helicopters...

Big deal, let's not use it in large quantities on the battlefield.

After all, when a general helicopter appears on the battlefield, it is basically a situation where one side has obtained absolute air supremacy.

And with our current strength, even if our current fighter jets are very average, there is no country that can dare to say that it can gain absolute air supremacy in a contest with us.

After all, there are too many long-range strike weapons now. Our planes can't do it, but we have missiles!

And in recent years, the sudden emergence of drones has provided our Army Aviation with a new development idea.

With the popularization of network intelligent mobile terminals, with the completion of our Beidou navigation system.

Future wars are destined to be intelligent and unmanned.

In the future, UAVs will be destined to take on more and more extensive roles on the battlefield.

So although we can't make a good helicopter, we can make more drones!

So in recent years, our military's drone technology has made rapid progress.

It can even be said that it has completely shaken off Mao Xiong and has become one of the few countries in the world that can challenge the United States.

Moreover, our drones have been exported to the Middle East in large quantities, and they have performed very dazzlingly in various conflicts that broke out in the Middle East in recent years.

The military also attaches great importance to this emerging weapon.

But that's because there is no hope of catching up in the helicopter field, and now the emergence of Spark technology. ,

Suddenly the military discovered that they had found a tool that allowed them to quickly get closer to the US and Russian helicopters.

Do you think they will be very excited?

After all, it's a completely different thing if you have a helicopter than if you don't.

Moreover, the role of helicopters in modern battlefields, especially street fighting, is basically irreplaceable.

This weapon, in street fighting, can transport soldiers to a strategic node at the fastest speed, and can also be used as a firepower output platform.

Provide the soldiers with maximum fire support, and basically do not challenge the field.

It is a very good all-weather combat weapon platform, so the military actually favors helicopters.

It's just that we have been unable to make breakthroughs in the field of helicopter aviation development before, so we slowed down the speed of development.

Our gap in the field of helicopter aviation is not just that we cannot make high-precision bearings.

Also, the internal processing of this helicopter is also very special.

Different from the connotation path of fighter jets, although the connotation path of fighter jets is also a workpiece processed by curved surfaces, it does not require much curvature.

Because after the air is sucked in, it has to pass quickly and then enter the compressor, and after going through the inner channel and mixing with fuel atomization, it is injected into the combustion chamber for pressurization.

The turboshaft engine of a helicopter is a completely different set of working principles.

Because it is necessary to ensure that the helicopter can fly stably at subsonic speed, the connotation of the helicopter adopts a convergent shape.

The convergent shape is actually to make the inside of the connotation channel more spacious and curved.

The main purpose is to ensure that the airflow can be accelerated evenly in the duct, and to ensure that the airflow is at the inlet of the compressor to avoid airflow turbulence, which will cause airflow isolation and cause engine shock and other problems.

Therefore, the requirements for processing tools are very high. It is necessary to process the connotation channel with a very large arc, and to ensure the strength and airtightness of the workpiece.

The reason why the engines of Miguo and Maoxiong can do it is purely because of their hard-processing capabilities.

Years of technology accumulation, as well as very advanced processing tools.

In this regard, we are far behind.

Not to mention the transmission shaft and bearings, but the processing of the inner channel of this large arc will make our project worry to death.

Because we really don't have qualified processing equipment...

The reason why we "cooperated" with France later was because we had to entrust French people to produce many key workpiece parts.

And in this way, this engine is actually shared by us and France.

The technical parameters of the engine will definitely face a very large risk of leakage.

And France is a traditional ally of the Americans.

If there is such a day, if we have a conflict with the United States, then if the Americans force the French to take a stand.

There is no doubt that the French must stand on the side of the Americans.

And maybe, they will play tricks on a certain part of our Z-20 engine.

You must know that the French have a consistent record in this regard.

The reason why Sa Mou in Iraq was beaten in the first Gulf War was helpless.

It is because the computer he bought from France was activated by the French before the war.

As a result, the entire Iraqi prevention and control command system was paralyzed by the virus.

Because of this, the Americans easily opened up an air corridor over Iraq...

So the military also knows that the French cannot be trusted, but given the current situation, we really have no choice.

But with the emergence of Xinghuo Technology's industrial robots, we have a choice.

That's why I had the big guy's previous question.

Of course Xiao Feng didn't dare to answer indiscriminately at this time, after all, if he didn't even think about it, he would just say it's okay.

It would be easy to be regarded as a liar.

So although he already had a rough idea in his heart, he still chose to answer the boss's question cautiously.

Then I pulled out the engineers around me, asked the military technicians to put forward the requirements, and asked these engineers to try to give answers.

Not to mention, when the engineers listened to the requirements of the military and made simulation graphics on the computer.

All the problems are solved...

The bosses are happy, because a heart disease that bothered them was solved with such an exception, so everyone gradually let go, and everyone drank very high this night...

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