Rebirth of Military Workers

Chapter 766

He can’t care about luck, but he can’t care about fighters.

If the turbofan six engine is not solved, there is no possibility for the new generation fighter core machine with a thrust-to-weight ratio of 10.

“Didn’t Xie Kai say that there are channels for five-axis?” Zheng Yucheng didn’t want to see this overview. When he said that, he looked at Xie Kai. “Years ago, Xie Kai built 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 for half a year, and there is no news over there. It’s hard to tell if I can get it.” Xie Kai was helpless.

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

Because of his rebirth and instigated butterfly wings, China had four axes ahead of schedule. Otherwise, it would have to wait until Europe was in chaos when the Berlin Wall was overthrown before China had a chance to get a batch of four-axis machining centers from West Germany.

Batumi pays close attention to each of the five-axis machines.

Several five-axis machining centers built by the Soviet Union from Toshiba specifically for propeller processing took several years, and they will soon be revealed, causing a lot of trouble.

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

Zheng Yucheng and Wang Guilin set their sights on Xie Kai. Those present, although Xie Kai is not professional, they know a lot better than them.

“It is theoretically possible. But there are too many things involved, and the parts we manufacture simply cannot achieve the accuracy of Japan. The five-axis machining center not only has five movable spindles, it is a strategic equipment for the world. The top high-precision and cutting-edge equipment in some military industries is even more important than a large press with more than 40,000 tons!” Xie Kai looked serious, “Five-axis, the real core is that it can be five-axis and four-axis. Linkage, let the parts be processed and formed at one time!”

Top strategic equipment is not so easy to engage in.

China has never been able to obtain five-axis machining centers through special channels, and it is not without reason that a large number of four-axis machining centers can be obtained.

“I can’t get it through some special channels? Even if I give more money!” Li Mingshan asked Xie Kai unwillingly. “At first sight, I missed the door and ended up being restricted by a processing equipment.”

“Yeah, it’s almost a kick.” Long Yaohua was not reconciled.

Originally, it was said that there was a lack of a large press, so the 404 tightened the belt at the beginning and started this package first.

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

Then, no domestic engines are available!

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

Who is willing?

An inexplicable anger filled everyone’s chest.

But no one can do anything about it.

“Is there no other way?” Long Yaohua always felt a sigh of relief 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 require five-axis machining. Of course, blades can also be machined with four-axis, but our overall turbine disc It’s useless.” Xie Kai smiled bitterly.

The design of the overall turbine disc is also because the previous turbofan-6 adopts the foreign processing technology of assembling the impeller and the manufacturing process is not close.

This is the future development trend. After the turbofan-6 was taken over, Xie Kai didn’t ask much. The overall turbo disk was his only requirement.

At the beginning, Sun Hong proposed that the design requirements of Xie Kai were unrealistic, and foreign research in this area belonged to cutting-edge technology.

No way, Xie Kai asked.(Read more @ wuxiax.com)

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

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

Who is willing to give up?

“The turbofan-6 obviously succeeded in the test, but it was dismounted. A large part of the reason lies in this. According to the original turbofan-6 design, the impeller that provides high-pressure airflow is connected by curved blades to the wheel using a tenon. In order to stabilize the connection, it is necessary to machine the tongue and groove on the flange of the connecting blade… The overall structure will greatly simplify the structure of the entire turbine disc. According to our supercomputer model analysis, compared with the traditional impeller, the overall turbine disc Not only will the structural weight be reduced by 60%~73%, the structural strength and reliability will also be higher than that of the tenon-connected impeller by 40%~56%, and the turbine efficiency can be increased from 50% to 70% from the original design…” Jiang Chenyang’s series of data , Let Long Yaohua and others understand why they insist on using the impeller of this structure.

“How about the original structure?” Long Yaohua really didn’t want to give up. “You can wait until the five-axis breakthrough is made before using the overall turbine disc.”

“Using the original structure, the thrust provided by our engine cannot meet the takeoff of a 150-ton military transport aircraft, nor can it support a twin-engine Super-7…” Sun Hong shook his head straight.

If possible, they would have modified the design a long time ago, so that they will not stop when they encounter a problem now, and then they will stop when they encounter a problem again.

“Actually, there is another more important reason. The blisks connected by the tenon joints cannot withstand the high-pressure airflow and temperature of the engine after our modified design. Every time the test fails, it is due to the corrosion, fretting corrosion, and cracks of the tenon joints. And the failure caused by the damage of the lock plate. There is no possibility for such an engine to pass the acceptance of the Civil Aviation Administration.” Sun Hong told the truth.

The only way for domestic engines to be approved by the Civil Aviation Administration of China is this.

Civil aviation engines are not military engines. Today’s military engines, even turbojet engines, also use that structure.

This has caused a well-known problem-military engines do not have a high lifespan, and they have to be overhauled after hundreds of hours of flying. The main task is to reassemble the blades in the engine.

Xie Kai looked at Sun Hong and Jiang Chenyang, and was surprised at their remarks.

The two of them tried their best to oppose his acting style of not knowing how to pretend to be a few commanders, and incidentally, they also contradicted his proposed structural design of using an overall turbine disc.

Fortunately now, they have become staunch supporters of the use of integral turbine disc impellers.

“I can’t solve the manufacturing process, is it just stopping like this?” Long Yaohua was a little angry.

I always felt a breath in my chest.

These guys in 404 made the breath in his chest more and more congested, and he almost couldn’t breathe.

Zheng Yucheng and Wang Guilin did not expect such a thing to happen.

The CNC technology R&D 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.

“I want to find a way to buy a batch, even if it’s $5 million per unit or $10 million per unit, you have to buy a batch!” Zheng Yucheng suddenly patted the table and stood up with a grim face. “We can’t let our project be affected just because of this stuff.”

“Old Zheng, calm down!” Wang Guilin pulled Zheng Yucheng’s clothes and motioned 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 spend money! 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 area, I got them early. You don’t know, if you change to a few years ago, it is possible that someone will sell this under the stimulus of high profits. Not now. Up!”

“Why not?”

Everyone is puzzled.

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

In fact, Xie Kai hates it in his heart. If he was reborn a few years earlier, he would have the opportunity to get a five-axis machining center from Toshiba or any five-axis CNC machining center production company.

The five-axis CNC machining center for large propellers acquired by the Soviet Union from Toshiba was acquired in 1983, and negotiations between the two parties began in 1980.

Also after Toshiba smuggled a batch of five-axis machining centers to the Soviet Union in 1983, there has never been a 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 1984, which can monitor most of the world’s human areas, especially Asia and Europe, which are regarded as enemies by the United States…” Xie Kai said.

American GPS global positioning system, which is a product of Star Wars.

It’s no secret, and they’re bragging, forcing the Soviets to desperately launch the GLONASS GPS when satellite technology is immature. From 1982 to 1985, the Soviets launched a total of 3 satellites. The simulated satellites and the 18 prototype satellites used for testing have a design service life of only 18 months. In fact, the average is only 16 months.

From 1985 to last year, 6 real GLONASS satellites were launched, and the Soviet GLONASS satellite system entered the practical stage…

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

Military satellite networks can also be used for civilian purposes.

“Five-axis machining centers, every machine produced by the major CNC manufacturers in the world must report to the Batumi Committee. In order to prevent this top-level strategic equipment from being acquired by the Soviet Union, those bastards install it on every five-axis machining center. With GPS satellite positioning equipment, the position is continuously transmitted through satellite signals…”

“This……”

Long Yaohua and others never expected such a situation.

In other words, they never thought that people would install the extremely expensive GPS satellite positioning equipment on a processing machine tool.

“Take off the satellite positioning equipment and just transport the equipment away,” Zheng Yucheng said.

“Do you think people can’t think of this problem? Those grandsons of the Batumi Committee are bored all day long. There is a group of people who often check these five-axis machining centers. According to what I know, they check every three months! It’s impossible to ship it back, or ship it back before the inspection!” Xie Kai felt that Batumi’s bastards were too hateful.