Chapter 304 The Final Technology of Radome

Before he even entered the door, Zhou Yi heard their voices calling him.

"Professor Zhou, Professor Zhou. We have some ideas, but something feels wrong."

When Zhou Yi heard it, it was Academician Wu's voice.

When they entered the office, Zhou Yi said to Huang Shunjian:

"Serve tea to Academician Wu and Academician Zhang."

"OK."

Huang Shunjian quickly served tea to the two academicians.

There are indeed many academicians of the Chongqing Higher Academy of Sciences, more than twenty, and there are still about a dozen who are being selected.

But it is still difficult for ordinary undergraduates and master's students to pour tea for academicians.

"Why are you in the mood for tea? Professor Zhou, our progress is a little slow. How are you now?"

Academician Zhang Tiande’s character is still so straightforward and he speaks directly.

"Haha, sit down and take a rest. I'll see how sweaty you guys are. Let's blow on the air conditioner and talk slowly."

Zhou Yi asked another student to pass them toilet paper and wipe the sweat from their foreheads.

After resting for a while, Zhou Yi asked:

"How are you progressing? Where are you stuck?"

Academician Wu said:

“Our current research focuses on reaction-sintered silicon nitride and hot-pressed silicon nitride.

I just don’t know what the difference is, and the finished product from the experiment is not good. "

Zhou Yi said with a trace of doubt:

"Silicon nitride?"

Academician Zhang explained:

“Silicon nitride-based ceramics are one of the materials with the best comprehensive properties among structural ceramics.

It has a low dielectric constant, a decomposition temperature of 1900°C, and can be used for radomes with flight speeds of 6 Mach to 7 Mach. "

After hearing this, Zhou Yi realized what he felt was wrong before.

I used to think of quartz fiber fabric-reinforced silica-based composite materials. Now, wouldn’t it be possible to replace the silica with silicon nitride?

After Zhou Yi expressed his thoughts,

Academician Wu and Academician Zhang both pondered for a while before Academician Wu said:

“I thought about what Professor Zhou said and it seems very feasible.

Using the density controllability of reaction-sintered silicon nitride, radomes with electrical properties equivalent to those of a sandwich structure can be manufactured.

In order to broaden the frequency band, a wide-band radome can also be achieved by combining silicon nitride ceramics and quartz ceramics.

Phosphate-based composite materials have good heat resistance.

At present, the main materials we have obtained practical applications are silicon fiber reinforced chromium phosphate, aluminum phosphate and chromium aluminum phosphate composite materials. "

Unexpectedly, the problem that had puzzled Zhou Yi for several days was solved in one discussion.

Following this idea, Zhou Yi had a strong hunch that high temperature resistance technology would be solved.

At this time, Zhou Yi thought of the mathematical models and composite materials involved in making asphalt roads before, and said:

"Would it be better to combine nano-SiO_2 with nano-level silicon nitride? The doping ratio between the two may be a topic worthy of discussion."

Academician Zhang's eyes lit up and he said:

"Yes, Professor Zhou used this idea to find an optimal solution."

Zhouyi said:

"Then let's try this. The mathematical model here is not complicated. Just use the previous one. I won't do it."

The sixth-generation fighter jet is an upgrade in all aspects, among which artificial intelligence and 6G technology will be applied in the sixth-generation fighter jet.

In the early years, foreign countries proposed the concept of sixth-generation fighter jets because they thought that artificial intelligence technology would mature around the 1930s.

What they didn't expect was that the first generation of artificial intelligence had indeed arrived.

However, it was the Great Xia Kingdom Zhouyi who initiated it.

The first one to complete the sixth-generation fighter jet will most likely be Daxia.

After having thoughts and ideas,

Academicians Wu and Zhang took their people and spent three days to make a finished product.

When he saw how passionate they were in their 60s, Zhou Yi's original idea of ​​taking a two-day rest disappeared.

A country or a nation must have a group of people who make selfless contributions.

Now that he has reached this position, Zhou Yi also decided to make a contribution.

At least I won’t have so many worries when I want to go abroad in the future.

When Daxia's scientific and technological and military strength reached a certain level,

Zhou Yi could go abroad if he wanted to, and go wherever he wanted.

In the laboratory, Zhou Yi took the finished product, looked at it again and again, and said:

"I feel that this look is enough to be used on sixth-generation machines, and we can even recall some fifth-generation machines for upgrade experiments."

Academician Zhang said:

"Professor Zhou had an idea. We used your previous mathematical model to control the variables and found an optimal ratio.

I have to say that some of the roads we traveled in the past were not in vain, and we actually have a second spring at this moment.

Nanoscale silicon dioxide and nanoscale silicon nitride are indeed good materials. "

Zhouyi said:

"It's also good luck, I also wanted to let you give it a try.

I didn't expect your speed. It's only been a few days. "

Academician Wu said:

“The theory is mature, and the experimental direction and materials are known;

It’s not surprising that we even fixed the ratio in a specific range so quickly.

The food has been fed to our mouths. If we don’t hurry up and eat it, we will be sorry for Professor Zhou and the people and the country. "

Zhouyi:...

Does it have to rise to this level?

Maybe this is the spiritual charm of the older generation,

They have the purest revolutionary beliefs and patriotic feelings.

"You guys have worked hard, why don't you take a few days off?"

Zhou Yi looked at them in their 60s with panda eyes, and felt indescribable emotions in his heart.

The backbone of a country and nation is supported by this group of unknown scientific researchers.

Academician Wu shook his head and said very seriously:

“The radome is not completely completed, so how can we rest?

If it was researched one day earlier, it would be a contribution to national defense and protect the lives of pilots.

It is also a sharp sword in the hand. Then the ugly country and the small border countries will not dare to be so presumptuous. "

Zhou Yi was in awe of this spirit. There is a big difference between people with faith and people without faith.

Academician Wu continued:

"But this antenna can be tested, and we can start working on the other three directions.

Professor Zhou, which direction do you want to take first? "

Zhou Yi heard this and said:

“Although I’m resting these days, I also went to see their 6G progress. I think we can directly develop full-band omnidirectional stealth radome technology.

By then, when the integrated satellite and ground network is completely completed, our fighter jets may be able to test their power. "

"Okay! Let's all listen to Professor Zhou Yi."

The two of them slapped their thighs and said one after another.

Zhouyi said:

"good."

After a while, everyone went from the laboratory to the large lecture theater.

The two academicians’ disciples and other professors and experts filled the lecture theater.

A new round of project discussions began.

The first person to speak was Zhou Yi.

Zhou Yi took the microphone and said:

"After more than half a month of unremitting efforts, we have successfully solved the problem of high-temperature resistant materials, and now there are only three directions left for the radome."

Everyone applauded fiercely, which meant that their hard work for so many days was recognized.

In the future, they will also be a part of the reward system.

Among so many steps in manufacturing a radome, high temperature resistance is the most critical step.

Because as long as the antenna can withstand high temperatures, everything is possible, sooner or later.

If the radome cannot withstand high temperatures at ultra-high speeds, no matter how good the ideas and technology are,

All will be in vain.

After the applause stopped, Zhou Yi continued:

"Next we will develop full-band omnidirectional stealth radome technology. Once this technology is completed, it can be immediately applied to fifth-generation fighter jets.

A big surprise for every country in the world. "

Having said this, everyone present is looking forward to it. This is a sign of the rejuvenation of a great country.

This is only one advantage of the sixth-generation fighter. If a complete sixth-generation fighter is manufactured,

The impact will be unparalleled.

Combined with the first generation of artificial intelligence and integrated with the sea, land, air and sky, air supremacy wherever the aircraft carrier goes will be dominated by Daxia.

"Now I will mainly talk about the details of the full-band omnidirectional stealth radome technology."

“The sixth-generation aircraft is a stealth fighter and must have full-band, omnidirectional stealth performance.

However, this performance can be directly used on fifth-generation fighters, so we must go all out and make it as quickly as possible. "

“Frequency Selective Surface (FSS) technology is an effective measure to achieve in-band and out-of-band stealth in the radome.

FSS is a periodic array that can be realized by arranging periodic metal patches on the surface of the medium or by filling the metal surface with periodic gaps. "

Zhou Yi talked a lot in one breath. After saying he was tired, he gave Academician Wu a look,

Academician Wu said:

"The key technologies for FSS radome design and manufacturing include four points. The first point is the electrical performance simulation calculation method of finite large curved surface quasi-periodic array."

This was discovered by Zhou Yi, because General Zhao gave Zhou Yi a lot of information. When Zhou Yi was perfecting the mathematical model,

Found this key place,

This algorithm is very complex, and the workload was very heavy at the beginning, so it has not been improved.

Now that Academician Wu brought it up, Zhou Yi took over and said:

“In the electrical performance simulation model of the FSS radome,

In most cases, it is assumed that the FSS array is infinite, plane periodic, and incident at a small angle.

This is different from the actual situation of the radome, which will lead to large deviations in the simulation results.

In our actual application, the linear size of the FSS radome is only a few dozen wavelengths.

Moreover, the curvatures at different locations on the outer surface vary greatly. Areas with small curvatures are approximated as planes, while areas with larger curvatures such as edges and sharp corners are not suitable to be approximated as planes.

. "

The final algorithm will be responsible for the team of Zhou Yi and Chen Danqi from the School of Artificial Intelligence.

Academician Wu said at this moment:

“The next two are relatively easy. Our team worked together with Academician Li to design the broadband streamlined FSS radome wall structure and the hyperboloid FSS radome manufacturing process.

Since we have the technology to make 6G antennas before, it is not too difficult for us to do it. We can produce finished products in a short time without burning money. "

At Academician Wu’s signal, Zhou Yi said:

“The last direction is active frequency selective surface (AFSS) technology.”

“Everyone knows what AFSS is.

We mainly add impedance components such as chip resistors, inductors, capacitors, PIN diodes or varactor diodes into the FSS structure.

To achieve FSS with dynamic adjustment of electromagnetic characteristics.

This direction will be led by Professor Liu Bing, director of the Institute of Electronic Science and Engineering. "

Liu Bing's whole body was trembling at this moment.

Among the people present were several academicians and several military bosses with stars on their shoulders.

If you do it well, not only will it be okay to be an academician, but you will also be able to get some kind of military position.

At that time, you will have completely entered the upper level of the pyramid.

Liu Bing said tremblingly at this moment:

"I will produce results that satisfy the country as quickly as possible."

It's normal to be excited, but it's abnormal not to be excited about this turning point in life.

Fortunately, Liu Bing lived for decades and quickly adjusted his condition and began to introduce this direction in detail.

"The AFSS radome can be designed as a narrow-band structure. When the operating frequency of the supporting antenna changes, the resonant frequency of the radome changes, while the bandwidth remains basically unchanged.,

Since the bandwidth of AFSS radome is narrower than that of ordinary FSS radome, its out-of-band stealth frequency range is wider than that of ordinary FSS radome. "

Liu Bing was obviously prepared.

Some of the original drawings were surprisingly similar to this design.

Moreover, Liu Bing can still ask Zhouyi if he doesn't know how to do it. It's a step-by-step teaching, putting food in his mouth.

If he still can't keep up with the progress of the large army, Liu Bing may have to go to Zhou Yi to resign without Zhou Yi.

With all the wealth in front of him, Liu Bing expressed that he must hold on tightly.

After the specific tasks were assigned, Zhou Yi organized everyone to have a celebration banquet in the high building of the cafeteria.

It’s not like popping champagne at halftime. After working so hard for so long, relaxing for a night can be considered a combination of work and rest.

Only then can you devote yourself to the follow-up work with full energy.

Zhou Yi dragged his drunken body, Zhang Bin had been silently guarding Zhou Yi,

I was afraid that something would go wrong if Zhou Yi drank too much.

Although it was a celebration banquet, everyone was still very restrained. They drank a few glasses of wine and then started eating a big meal.

It's just that some people frequently toasted to Zhou Yi. Zhou Yi couldn't refuse, so he drank in order to encourage them.

Back home, Xia Xue rolled her eyes at Zhou Yi, and then went to make honey water for Zhou Yi.

Zhou Yi hugged Xia Xue and said with a smile:

"Xue'er, let me tell you, in two or three years at most, we can travel abroad and meet our former friends."

Xia Xue came back with honey water, and then said softly:

"I don't really care whether I go abroad or not. If you want your friends and teachers, try to make some big results next year.

Let them come to the High Court. "

After saying that, Xia Xue took a spoon and fed Zhou Yi some honey water.

Zhou Yi said sincerely while drinking:

"Haha, try your best. The main thing is that I also want to travel around the world with Xueer."

Old husband and wife, Zhouyi is still so greasy.

If the sixth-generation fighter plane comes out, combined with the sky carrier and space-based weapons, Zhou Yi will be on earth in the future.

You really can go wherever you want.