Rebirth of Northern Technology

"Well, it doesn't mean anything, you boys are willing to do some weird things."

Several girls lost interest.

There is no high technology here at all!

On the model airplane, after taking away the traditional engine, the parts are pitiful, and the wings are completely bare.

"However, your paper has also been published. Why don't you go back to school? It will be a holiday soon!"

Li Dan questioned her Zhang Tianhang.

"The air engine project is considered completed, but there is still an aerospace engine project that is in progress. I don't think we can go back to the Spring Festival."

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"What are you waiting for! Lead the way ahead!" Feng Yan felt that the boyfriend Li Dan was looking for was too inked.

"Um..., that, this project is of high level, it is under construction, you can only wait here. Your brand can't enter the next workshop."

Zhang Tianhang froze for a long time.

"Okay, Feng Yan, go ahead, I won't go in, I will rest here." Chang Jianzhong was very generous.

"Well, wait for me, and when I finish the tour, I will tell you again when I go back!" The girls were excited, ready to move on.

Jiutai Base, except that the road is a little farther away, is pretty good.

Delicious and delicious hospitality, as well as curious look.

"Wait a moment, wait a moment." Cheng Yongxing jumped out hastily. "Don't make a joke about the confidentiality system. You have the right to enter, which does not mean you have the right to leak the information you see!"

"You mean, the information inside needs to be kept secret?" Li Dan asked.

"How fresh! Everything here needs to be kept secret. This is known as China's 51st District!" Zhang Tianhang was very proud. After he came in, he seldom sent messages to his girlfriend and home, and that was the reason.

"I can see what's here, but can't I talk about it?"

Li Dan stroked the red card hanging around his neck.

I saw it, but if she was not allowed to say it, it would be unimaginable for a girl who naturally likes gossip. "I'm afraid I can't do it!"

"You have the right not to watch! But if you watch, you need to abide by discipline!"

"What if we can't comply?" Feng Yan is no stranger to the secrecy system. "Do I need to sign an agreement?"

"There is no need to sign an agreement, and there will be no consequences, it's just a loss of trust. Let's go!"

Cheng Yongxing has already gone ahead and led the way.

"Oh, you say that, I feel more pressure." Feng Yan remembered the verbal promise between her and Cheng Yongxing a few years ago.

Among these people, she is the only one who has the pressure to leak secrets. "Then I won't go in."

Li Dan's boyfriend is the person involved and there is no need to hide it. And she needs to hide it from Chang Jianzhong.

"Go, it's good to see more of the market, it's a rare opportunity. You don't have to worry about me."

Chang Jianzhong understands his girlfriend's thoughts. "When we make technology products, vision is very important!"

"Well, I hope I can really see something this time!"

Several people moved on again.

After walking through two gates in a row, I came to a new area. "I haven't been here before!" The students all had similar feelings.

"This was dug out later, and it's still dug inside now!"

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"Huh? Wei Xihan? Why are you here?"

Feng Yan and Wei Xihan had a fate.

There are a lot of people in the hall, many of them come from the University of Technology. Many people know Feng Yan, but Feng Yan doesn't know them.

Li Dan is more familiar with Zhang Tianhang's classmates from the Aviation Academy. Each has a lot of people who need to say hello.

"I came here because of it. It needs a lot of superconductivity and chip control, so I was caught." Wei Xihan pointed to a model on the table.

"What is this, so ugly!"

After the few people greeted them, they slowly gathered next to the ugly monster in the middle of the field.

This is a big trumpet-shaped model. The thick tube wrapped around the body reminds people of the movie "Alien", which is very ugly.

"This is an ion engine, for satellites and spacecraft!"

This time Zhang Tianhang was introducing.

Due to confidentiality reasons, he has no chance to show off to others, and now no matter what, he is the first to speak.

"But how can it grow like this, what do these pipes do?"

"That is a small particle accelerator. Many of these things are made of superconducting materials."

"Normal temperature superconductivity?" Feng Yan turned around the sample and found no cooling facilities.

"The engine can only be used in space. In space, there is no need to cool down, and it can reach the temperature required by the superconducting material."

The ion engine project can be regarded as a master of science and technology in recent years.

Superconductivity, semiconductor materials, IGBT, chip control, precision manufacturing and other cutting-edge technologies and technologies are all reflected in a small engine.

With the development of science and technology, the more advanced the technology, the more difficult it is to tell from the appearance. Because the technology is too fine, it is difficult to see with the naked eye.

"The biggest advantage of this engine is its dual use:

The general ion engine only pays attention to the thrust-to-weight ratio, but the thrust is too small.

This engine works in two modes, one is simple ion injection, the other is to directly accelerate the ions, and then produce a similar effect to chemical fuel. "

Zhang Tianhang continued to explain.

The ion engine is the only choice for human beings to travel in space at the speed of light.

Traditional chemical fuels rely on burning chemical reactions to heat and expand to gain thrust, but their exit velocity is too low and their mass utilization rate is too low. Moreover, it is very difficult to obtain fuel in the empty universe.

The ion engine has the characteristics of high thrust-to-weight ratio and precise control.

In addition, its energy source can make full use of solar energy. Therefore, in the 21st century, it has become the first choice for auxiliary engines to control satellite attitude.

The ion engine of the nine bases has integrated small particle accelerators to obtain better performance. To some extent, it is more advanced in concept than the ion engine commonly used in later generations.

The ion engine, of course, has a high utilization rate of injection quality, but because the absolute amount of injection is small, the thrust obtained is pitifully small.

After the particle accelerator is integrated, the positive and negative particles are accelerated at the same time, and annihilated after the acceleration, which neutralizes the charge and prevents ions from returning, while also generating a lot of heat.

Ordinary gas is heated and expanded, coupled with the impulse caused by the acceleration of the particles themselves, entrained and ejected outwards. Thereby generating greater impetus. The principle is a bit like the outer duct of a jet engine.

If it succeeds, the ion engine can really be the main engine of the spacecraft.

Most gases can act as propellants for ion engines and are easy to store and obtain. No matter which satellite or comet it is, it can be easily obtained.

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"When will this thing be practical?"

Li Dan was impatient after listening for a while. Although the quirky shape brings a sense of science fiction, the static model quickly takes away the freshness.

"Almost, there will be a satellite going into the sky next year. Then you will see it."

Aerospace Science and Technology’s first space experimental satellite will be launched in May.

This project is an aerospace science and technology project, but the money comes from the basic fund. Anyway, there is nothing about property rights or patents.

Now, and even later generations, the design and manufacture of satellites are based on a few years or even ten years.

This rhythm is totally unbearable for modern people who are accustomed to using months, weeks, or even days as a unit.

Therefore, Aerospace Science and Technology has formulated an intensive rocket launch plan. Initially, it will launch one rocket every quarter and gradually transition to one every month. Continuously improve while launching.

Satellite launches will be normalized.

The current aerospace field uses a single-piece, small-batch production method.

Every time a satellite is launched, news can be broadcast simultaneously.

Due to the long period, the fault tolerance rate is low. If you fail once, a few years of hard work has been lost. As a result, the requirements for quality have become more stringent and reflected in the cost, which is a sky-high price.

The cost of refining gold with a purity of 99.99999 is more than ten times higher than that of 99.999.

These problems will have solutions in later generations, that is, industrialized mass production. There is a company that prepares to launch tens of thousands of satellites.

Their plan is to launch more low-cost, low-quality satellites. Whenever something goes wrong, just throw it away.

If the construction of a Chang'e-3 is one billion U.S. dollars, then how about building 10?

The result may be beyond everyone's expectations.

If you can't build 10 units, the price will be less than 100 million U.S. dollars!

Because the quality control standards have been greatly reduced!

To build only one, its success rate must be 99.999%. And build 10 sets, the quality of each set is controlled at 30%, and it is ready to use!

Cheng Yongxing is also ready to go this way.

The rocket to be launched, like a bus, keeps launching. All kinds of related experiments, whichever you catch up with, you can go there.

If you have any ideas, you don’t need to guess, just launch it directly, verify it, and the result will come out.

Public Rockets will also accept loads from several relational schools. As long as the Jiutai base is not fully loaded, they can be free-ridden.

However, the experimental satellites that are launched cannot be simply thrown away after a test, but can also be used as waste.

The simplest of these is to bring a high-resolution CMOS camera up. After the experiment was completed, the surviving satellites continued to be used as camera satellites. Shoot as long as you can.

It is estimated that the cost can be recovered by selling photos.

Aerospace Technology is still negotiating with several domestic units to see if it can reduce launch costs by lowering quality requirements and increasing purchases.

Because according to the plan, the satellite launch volume of Aerospace Science and Technology can reach the level of hundreds a year in the future, and at least one public rocket will be launched every week.

Aerospace Science and Technology is very open to the quality requirements of rockets, as long as half of them can go to the sky. If the price can be negotiated, 13 can survive, so is it.

The key point is that it must be cheap.

Several negotiating opponents were unacceptable to this strange request.

Blow rockets, smash satellites, smash brands. So the negotiations are still in a deadlock.

If the price cannot be negotiated at the end, Yuhang Technology can only do it by itself.

"Let's go, let's eat! I'm hungry!"

Li Dan was completely impatient. Rebirth of Northland Technology latest chapter address: https://www.wuxiaspot.com/book/128175.htmlRebirth of Northern Science and Technology Full Text Reading Address: https://www.wuxiaspot.com/read/128175/Rebirth of Northland Technology txt download address: https://www.wuxiaspot.com/down/128175.htmlRebirth of Northland Technology Mobile Reading: https://m.wuxiaspot.com/read/128175/For the convenience of reading next time, you can click \"Favorites\" below to record the reading record of this time (Chapter 662 Public Rocket), and open the bookshelf next time. To! If you like "Rebirth of Northland Technology", please recommend this book to your friends (QQ, blog, WeChat, etc.), Thank you for your support! ! (www.wuxiaspot.com)