"Uh, hello Dr. Lai."

"Well, hello. It just so happens that the magnetic field generator is about to be tested, and you should come and take a look, after all, it won't be long before you will use it, and it is still necessary to know something about it.

We went to the safe room next to it and observed the inspection process. ”

The safe room is a room that is completely isolated from the research room here, and in the room, the light and shadow of the situation on the other side are 100% projected through guò stereoscopic projection technology. Except that it is more secure and illusory, nothing else makes any difference.

In the original real room, the automatic machine has completely replaced the manual work.

The test program is in the process of final simulation and inspection.

"Dr. Li Chunhua, do you have time now, I would like to ask about the principle of this magnetic field generating device. He looked like a giant electromagnet. At this time, Liu Haibo asked.

"Well, there's still some time, I'll talk about it. First of all, you are not wrong in what you said, this is a huge electromagnet; However, it is not an electromagnet in the traditional sense, which is built in imitation of the magnetic field of the Earth's core. The first to establish this model was the U.S. Geographic Survey more than 30 years ago.

We do not deny that the electromagnet is convenient and magnetic. But in space, we need not only a strong magnetic force, but also a large enough range of magnetic fields. It looks the same, but it's different. The magnetic field of the electromagnet is only attached to itself; But the most powerful part of the Earth's magnetic field is at an altitude of several thousand kilometers and extends more than 100,000 kilometers into space, almost ten times the diameter of the Earth.

In space, if we want to resist cosmic radiation such as the solar wind, we must have the same powerful magnetic field protection as the earth. Considering that the portable energy of the space shuttle is limited after all, it borrowed from the original American invention to establish an artificial magnetic field generating device.

The core of the earth, according to the existing authoritative speculation, is an iron core that remains solid and colloidal under high temperature and pressure, and around the iron core is a large flow of liquid metal, beyond the metal, there is magma, and then the mantle and crust.

And the current installation, we are mimicking the core of the earth.

First of all, his core is just an iron pipe that you see, hanging from the outside, and we use that instead of the steel core.

Outside, we use liquid sodium instead of a molten metal stream, simulating the earth's molten liquid iron.

In fact, sodium is not the metal with the lowest melting point, but it is the largest and lowest cost low-temperature molten metal that can be obtained with current technology. Moreover, it is also relatively easy to control, and the ionic performance is relatively good.

Our reality is that liquid sodium spins at high speed around a high-purity pure iron core to create a strange and powerful magnetic field.

Compared with ordinary electromagnets, it has a theoretical magnetic field protection layer of up to 1,000 kilometers, which will be able to defend against most of the cosmic radiation. Its power consumption is extremely low, only one percent of the magnetic field strength of the electromagnet of the same level. This is a remarkable find. As for the problem of energy consumption, I think the two best pilots, I don't need to say more. ”

"Yes, energy consumption is important in space. But I still want to ask, how much energy does this magnetic field generator consume? "Liu Haibo is meticulous.

"Uh...... It's a bit big......" Li Yuzhang was suddenly a little embarrassed, "To maintain such a huge magnetic field, it takes almost one million kilowatt-hours of electricity per hour, which is comparable to the engine of the S001 model." However, if the space shuttle carries more batteries, it is still possible. That's already good.

You know, he's able to defend against ninety percent of the sun's radiation. ”

The corners of Liu Haibo's mouth twitched, and the power of 1 million degrees is really a bit big, which is a little unbearable for the current space shuttle. Moreover, looking at Li Yuzhang's appearance, it is estimated that this is still the lowest power consumption!

"Okay, okay, let me introduce you to the principle of this thing, when you are in space, once something goes wrong, you may be able to fix it yourself." Seeing the eyes of the two of them, as well as the suspicious eyes of Zhao Qingyun and Sun Feiyu next to him, Li Yuzhang finally decided to change the topic. As mentioned above, it is a simulated magnetic field of the earth, but because the earth is huge, even if the earth rotates slowly, the secondary magnetic field is still huge.

But our magnetic field generator is different, it's very small, as you can see, it's only 3 meters, it's really a little pitiful compared to the core of the earth that is thousands of kilometers away. According to the magnetic field formula, we have to increase the flow speed of liquid sodium metal, and in order to have a sufficient magnetic field, the speed of sodium metal is very fast. This small space contains more than 15 tons of liquid sodium, which is ionized and liquefied under a strong electric current, maintaining a speed of up to 500 meters per second.

So, this thing is actually a bit dangerous.

In addition, the magnetic field that occurs, the maximum strength of the magnetosphere, will be within 100 meters from the core, and there will be almost no magnetic field in the middle, and the impact on the human body will be minimal, and because the magnetic field range will be likely to extend beyond 1000 kilometers, counting the range of the magnetic field with the ability to protect, it can defend objects within a range of at least 10 kilometers from cosmic radiation. This is definitely the most practical radiation protection technology in science and technology, and it will also be the main cosmic radiation protection technology and mainstream protection technology in the next 100 years. It will coat the shuttle with a layer of body armor. ”

"Then why is the iron pillar in the middle rusty?" Li Canglan asked. This stuff is useful, everyone admits it; But it's really ugly!

"There's no way around it!" Li Yuzhang shrugged his shoulders, "Only pure iron can meet the current requirements; However, the anti-rust ability of pure iron is really limited. But don't worry, this is only for practical use; When it comes to the actual application stage, it will be corrected. At the very least, a plastic anti-rust layer will be sprayed. ”

"Thank you." Li Canglan nodded. In fact, within the master company, the researcher is the highest ranking of the people of the same rank. Therefore, for Li Yuzhang's detailed and inner explanation, the two are still very grateful. In particular, it was invented for itself - at least for now.

"Alright, guys, we're going to test it off. See if this magnetic field generator works; If it works, how competent. Since it is a test, we will conduct the test according to the minimum power of 50,000 kWh. It can't be lower, less than 50,000 degrees can't melt the metal sodium. One of the things you have to pay attention to when you're in space is that you can't let the sodium cool down, otherwise it will take at least five minutes to reheat. And five minutes is enough for a solar storm to sweep you away. ”

"Hmm." Liu Haibo and the two nodded, this should be paid attention to. Once this does happen, it will be verified with life.

"The real yàn begins, the first step, spray the iron powder." Li Yuzhang entered the state of research as a scientist, with a stern expression, and the assistant next to him was also busy.