Chapter 1043

Micro precision is not only tiny but also precise. It is equivalent to making a Taoist temple in a snail's shell. It can hold a large amount of things within an inch.

Chip circuit manufacturing is a typical micro precision process, and it is also a nano level super micro precision that is hard to be seen by naked eyes.

In the field of aviation manufacturing, although it is not as abnormal as the nano level of chips, the production of many parts has reached the level of micro precision, such as the film cooling holes of turbine blades, and the palm sized blades need to have nearly 100 small holes in front and back.

Although the size of these holes is visible to the naked eye, it needs precise micro operation to make these holes accurately, stably and in one molding, so this kind of process holes are also classified in the micro precision category.

At the moment, the middle-aged aviation expert from Algeria's hand on the flame tube is full of such small process holes as the film cooling holes of turbine blades, like tiny honeycomb, like a marching array, densely and well distributed around the flame tube, giving people a unique industrial aesthetic feeling.

However, the middle-aged experts holding the flame tube are not in the mood to appreciate the unique aesthetic feeling. Instead, they stare at these small holes. There is no way to make these holes too fine. Although there is no metallographic analyzer and electron microscope, the middle-aged experts judge with years of experience that the equipment to make these holes is absolutely not simple.

"I don't know the effect of the hole array with this micro precision technology?"

When the middle-aged experts and other people around them looked at the technological holes on the flame tube and marveled at the distribution and beauty of these holes, Aziz, who had never spoken, suddenly asked a key question to Tengfei group.

Hearing the speech, both Abdullah and Mahmoud looked at Zhuang Jianye, but Zhuang Jianye gave a smile and told several laboratory technicians in white coats not far away: "open the same type of combustion chamber of the test bench, and let the experts of the two countries guide."

several technicians answered as like as two peas, and immediately walked to the side of the operation table. They opened the switch with a little preparation. With the sound of Hu ~ ~, the same kind of similar products of the combustion chamber of the middle-aged expert hand were immediately enveloped by the flames of fire.

At the same time, two rear projection color TV sets on one side immediately display relevant pictures. One is the infrared imaging picture in the combustion chamber flame tube and the dynamic picture of internal gas flow generated by computer according to the combustion situation and air flow distribution; the other is the external monitoring of the test bench and the temperature change of the combustion chamber center, flame tube inner wall and external.

At first, Aziz and others didn't think much about it, but when the central temperature of the combustion chamber reached 1832 ℃, Aziz's old face began to fade.

It should be known that this central temperature has reached the maximum temperature of the flame tube of the M88 small bypass ratio turbofan engine used by the French gust fighter.

And this temperature has only been reached once in the laboratory of the European Aeronautics and space agency, because this kind of extreme temperature test once is enough. After all, the combustion chamber is not a random firewood. It's OK to know that the combustion chamber of M88 can have an extreme temperature of 1832 ℃.

After all, the actual use of M88 flame tube temperature can only be maintained at 1587 degrees Celsius, then high will be a problem.

But now, the central temperature of the combustion chamber of Tengfei group can't help reaching 1832 degrees Celsius, the extreme value of the combustion chamber of France's M88 engine. It's also a pressure free one degree Celsius, a firm climb of one degree Celsius.

This has made people uneasy, and Aziz was even more surprised when he looked at the computer-generated dynamic picture of gas flow on another screen.

Most of the red heat flow in the middle is wrapped by a layer of light blue air flow, which rotates rapidly in the flame tube like a tornado. The so-called wind borrows fire, fire borrows wind, so does the forest fire outside, and so does the combustion heat flow in the flame tube.

In addition to the oxygen brought by the compressed air of the compressor, the cooling air mold also provides combustion supporting oxygen. Coupled with the internal rotation, not only the fuel and oxygen are fully mixed and fully burned, but also the combustion is completely isolated from the inner wall of the flame tube, so that the temperature of the flame tube always stays at a constant value.

From the result that the detection temperature of the inner wall is 1189 ℃ and that of the outside is only 800 ℃, and the two groups of numbers are very constant, and the positive and negative values do not exceed 3 ℃, the efficiency of rotating gas film inside the flame tube is quite high.

Yes, it's really quite high, because the central temperature of the combustion chamber has reached 2057 degrees Celsius at the moment.

"This This This... "

Now Aziz is completely surprised. He hasn't made such a show for a long time. No wonder the prince of the United Arab Emirates, who has spent most of his life in the European aviation technology industry, will do so. It's really amazing. In his life, he only heard the boast of his American counterparts at an academic exchange meeting, but never saw that he can really withstand more than 2000 degrees Celsius High temperature combustion chamber.

Because of this, but Aziz witnessed this miracle with his own eyes, the whole person was just like living in a dream, completely in a trance, only felt that all this was not very real.Where am I now? Is it China? Has the Chinese taken down the key components of the next generation fighter?

You know, the Europeans are still dawdling in this field, the Russians are still raising money in this field, and the Chinese have already made achievements?

"Ladies and gentlemen, this is the WC-6 honeycomb combustor specially developed by our group for the third generation of hx-25-17 core machine. The inner flame tube adopts the film cooling hole array created by our group. As shown on the screen, the whole combustion process is violent and stable. The key rotating film can completely protect the inner wall of the flame tube It is not eroded by high temperature.

At present, two companies in the world have independent R & D and production capacity for this technology. One is Pratt & Whitney of the United States, which uses this technology in the combustion chamber of f-119 high thrust turbofan engine produced for F-22; the other is the wd-80s high thrust turbofan engine of our Tengfei group, which is also equipped for the next generation combat aircraft Zhenlong max This technology will also be equipped on board... "

Just when Aziz was in a trance, Zhuang Jianye's voice came quietly, which made Aziz finally recover. Zhuang Jianye framed the topic on the real dragon Max next generation fighter and wd-80s engine, and didn't say anything about the sale of equipment or the transfer of production line. After all, the news of Zarif was secretly given to him, and Zhuang Jianye still couldn't get rid of Abdullah and his wife Mahmoud's careful thinking can only focus on the cooperation of the next generation of combat aircraft. What is the core of the next generation of combat aircraft?

Of course, it's the aeroengine, so Zhuang Jianye is not ambiguous. He will take out the key technical achievements of the next generation of engines and directly benchmark the f-119 engine of the F-22. If this is not Wang Chan, what is Wang Chan!