He can not care about Yun Shi, but he can't care about the fighter.

The turbofan six engine does not solve, and the thrust-to-weight ratio of the core machine of the new generation fighter is 10, and there is no possibility.

"Didn't Xie Kai say that there were channels to engage in five-axis before?" Zheng Yucheng didn't want to see this overview, and when he said it, he also looked at Xie Kai, "A few years ago, didn't Xie Kai build a batch of four-axis machining centers from Japan? The accuracy is much higher than that of domestic production." ”

"I've been waiting for news, and I've been waiting for news for half a year, and there's no news over there, so it's hard to say whether I can get it. Xie Kai was helpless.

As long as he could get it, he would have stood up and said it.

Because he was reborn and instigated the butterfly wings, China had a four-axis in advance, otherwise, it would have to wait until the Berlin Wall was torn down when Europe was in chaos, and China would have the opportunity to get a batch of four-axis machining centers from West Germany.

The five-axis thing, each one, Batumi is staring very closely.

The Soviet Union built several five-axis machining centers from Toshiba that were specially used for propeller processing, which took several years, and it would soon be revealed, and the matter was very big.

"Is it possible to transform the four-axis into a five-axis?" asked Long Yaohua.

Zheng Yucheng and Wang Guilin set their eyes on Xie Kai, although Xie Kai was not a professional, he knew a lot more than them.

"Theoretically, it's possible. But there are so many things involved in the middle that the parts we make simply can't achieve the kind of precision that Japan makes. The five-axis machining center not only has five movable spindles, which is the world's top high-precision and cutting-edge equipment in strategic equipment, and for some military industries, it is even more important than a large press of more than 40,000 tons!" Xie Kai looked serious, "The real core of the five-axis is that it can be processed and formed by five axes and four linkages!"

Top strategic equipment, not so easy to do.

China has not been able to get a five-axis machining center through a special way, and it is not without reason that a large number of four-axis can be obtained.

"You can't get it through some special channels, even if you give more money!" Li Mingshan asked Xie Kai unwillingly. "It looked like it was almost a kick in the door, but it was limited by a processing equipment. ”

"yes, it's almost a kick in the door. Long Yaohua was not reconciled.

Originally, it was said that there was a lack of big presses, and 404 tightened his belt at the beginning and engaged in this matching first.

The large press has been made, and the trial production has also been successful, which can solve the problem of insufficient structural strength of large aircraft.

And then, there were no domestic engines available!

What restricts the development of domestic engines is no longer the material and strength of the key core components of the engine that can withstand higher operating temperatures, but in the processing!

Who willingly?

An inexplicable anger permeated everyone's chests.

But there was nothing anyone could do.

"Is there no other way?" Long Yaohua always felt a breath in his chest.

"No, not only fighter engines, but also gas turbines for high-power generators in thermal power plants, gas turbines for ships, etc., many of which require five-axis machining. Of course, the blades can also be machined with four axes, but our overall turbine disc is of little use. Xie Kai smiled bitterly.

The design of the integral turbine disc is also because the previous turbofan-6 used the processing technology and manufacturing process of assembling the impeller in foreign countries were not up to standard.

This is the future development trend, since the turbofan-6 was taken over, Xie Kai did not make many requirements, the overall turbine disk is the only request he made.

At the beginning, Sun Hong put forward Xie Kai's design requirements as unrealistic, and foreign research in this area belongs to cutting-edge technology.

But there was no way, Xie Kai asked.

The leaders of the 404 also listed this technology as an important technical core of the entire engine project, because the American Advanced Fighter Program (ATF) is listed like this!

This is an opportunity to develop side by side with the world's advanced cutting-edge technology.

Who wants to give up?

"The turbofan-6 was obviously successfully tested, but it was dismounted, and a large part of the reason is this. According to the original turbofan-6 design, the impeller that provides high-pressure airflow is connected by a curved blade to the wheel disc using a tenon. In order to stabilize the connection, it is necessary to machine a tongue and groove on the rim of the connecting blade...... According to the analysis of our supercomputer model, compared with the traditional impeller, the overall turbine blisk will not only reduce the structural weight by 60% ~ 73%, but also the structural strength and reliability will be higher than that of the impeller connected by the tenon 40% ~ 56%, and the turbine efficiency can be increased from the original design of 50% to 70% ......" Jiang Chenyang's series of data made Long Yaohua and others understand why they insisted on using this structure of the impeller.

"What about the original structure?" Long Yaohua really didn't want to give up, "You can wait until the five-axis breakthrough is made, and then use the overall turbine disk." ”

"With the original structure, the thrust provided by our engines cannot meet the take-off of a 150-ton military transport aircraft, and it is also unable to support the twin-engine super-7 ......," Sun Hongzhi shook his head.

If possible, they would have revised the design a long time ago, and they would not have stopped when they encountered a problem, and then stopped when they encountered a problem.

"In fact, there is a more important reason not to mention, the blisk connected by the tenon can not withstand the high-pressure airflow and temperature of the engine after we modify the design, and every time there is a problem in the test, it is caused by the corrosion of the tenon, the fretting corrosion, cracks and damage to the lock plate. There is no possibility that such an engine will pass the acceptance of the General Administration of Civil Aviation. Sun Hong told the truth.

There is only one way for a domestic engine to be recognized by the General Administration of Civil Aviation.

Civil aviation engines are not military engines, and the current military engines, even if they are turbojet engines, use that structure.

This has created a well-known problem - military engines are not well-known, and they have to be overhauled after hundreds of hours of flight, and the main work is to reassemble the blades in the engine.

Xie Kai looked at Sun Hong and Jiang Chenyang, and showed surprise at their words.

In the past, the two of them tried their best to oppose his style of acting without knowing how to pretend to know a few commands, and incidentally resisted his proposed structural design of using an integral turbine disk.

Fortunately, they have become a staunch advocate of the use of integral turbine disc impellers.

"I can't solve the manufacturing process, can I just stop like this?" Long Yaohua was a little angry.

I always felt like I was holding my breath in my chest.

These guys in 404 made the breath in his chest more and more blocked, and he was about to lose his breath.

Zheng Yucheng and Wang Guilin didn't expect such a thing to happen.

The CNC technology research and development center of Hongqi Machinery Factory has been working hard to challenge the five-axis, but now there is no way to improve the machining accuracy of the domestic four-axis machining center.

"Find a way to buy a batch, even if it's five million dollars a unit, ten million dollars a unit, you have to buy a batch!" Zheng Yucheng suddenly slapped the table and stood up, his face full of hideousness. "We can't let this stuff hurt our project. ”

"Lao Zheng, calm down!" Wang Guilin pulled Zheng Yucheng's clothes and motioned for him to sit down.

It's useless to be ruthless.

Money can't buy it.

"Xie Kai, you have a lot of ways, think of a way, let's use the money to smash it! Buy a few and dismantle one to study. Zheng Yucheng looked at Xie Kai with red eyes.

Xie Kai shook his head lonely, "Uncle Zheng, there are channels in this regard, and I have already gotten it." You don't know, if you change it to a few years ago, there is still a possibility that, spurred by high profits, someone will sell this. Not anymore!"

"Why not?"

Everyone was puzzled.

It worked a few years ago, shouldn't it be easier now?

Xie Kai actually secretly hated in his heart, if he had been reborn a few years earlier, he would have had the opportunity to get a five-axis machining center from Toshiba or any five-axis CNC machining center production company.

The Soviet Union obtained a five-axis CNC machining center for large propellers from Toshiba in 83, and the two sides began negotiations in 80.

It was also after Toshiba smuggled a batch of five-axis machining centers to the Soviet Union in 83 years, and there was no smuggling incident of five-axis machining centers in the world.

"The reason is that the Americans' global positioning system (GPS) was completed in the second phase of '84, and it can monitor most of the world's populated areas, especially in Asia and ......Europe, which the United States considers enemies," Xie Kai said.

The American GPS Global Positioning System, which is a product of Star Wars.

It's no secret, and they brag a little badly, forcing the Soviets to desperately launch the GLONASS global positioning system when the satellite technology is not mature, and from 82 to 85, the Soviets launched a total of 3 analog satellites and 18 prototype satellites for testing, and the design life of these satellites is only 18 months, in fact, the average is only 16 months.

From 85 to last year, 6 real GLONASS satellites were launched, and the Soviet GLONASS satellite system entered the practical stage......

The purpose of the frenzied construction of a global satellite network between the United States and the Soviet Union is to monitor the whole world and provide accurate satellite positioning for their strategic missiles.

Military satellite networks can also be used for civilian use.

"For five-axis machining centers, every machine produced by the world's major CNC manufacturers must be reported to the Batumi Committee. In order to prevent this top-of-the-line strategic equipment from being acquired by the Soviet Union, those bastards, GPS satellite positioning equipment was installed on each five-axis machining center, which continuously transmitted the position through satellite signals......"

"This ......"

Long Yaohua and the others didn't expect such a situation at all.

Or rather, they never thought that someone would install an incomparably expensive GPS satellite positioning device on a processing machine.

"Take off the satellite positioning equipment and transport the equipment away. Zheng Yucheng said.

"Do you think people can't think of this problem? Those grandsons of the Batumi Committee are idle and bored all day long, and a special group of people will often inspect these five-axis machining centers, and according to what I know, they will be inspected every three months! Even if we ship them back, it is not much possible to ship them back before the inspection!" Xie Kai felt that the bastards in Batumi were too hateful.