Chapter 894: The satellite bug
Diao San also accepted his fate. After all, the Air Force pilot is a hard work.
Our Air Force on the Peninsula battlefield: Actually, it's okay, at least it won't be unable to fight.
Even if the Citimen and the Russians filled the plane, the pilots were not easy to get. This is also the main reason why their Air Force retreated and retreated. These people were wiped out. The new crops grew and the daylily was cold.
In contrast, they are much more confident about the Army. After all, they fought with the John Cow and the Gaul Chicken back then, and they were extremely confident.
If you shoot this thing, as long as it can be fired, what do you think about doing? The purse driver's license is also a driver's license.
These disturbances had no effect on Gao Zhendong. When he saw 21:0 in the newspaper before he went to work, he smiled like a fool.
Lou Xiao'e, who was still taking care of the Gao brothers, almost pulled him back to the hospital. Zhendong's condition was so abnormal.
Gao Zhendong was riding the bike, and his body swinged significantly larger than usual, and he looked very proud. "Mr. Gao looks very happy when riding a bicycle." A comrade following behind said with a smile.
"Then it must be, if you are the ones, you are even more powerful than him." The other person pedaled and agreed. When General Manager Gao was in a good mood, he would be very quick to ride the bike. It was very difficult to follow. I don't know how he was. He was exercising, and he didn't see him practicing physical fitness very much.
Gao Zhendong himself kept muttering "21:0" in his mouth. He dared to say confidently that this 21:0 must have his own efforts.
This record will definitely be named after our history, and it will always nail the dirty three to the pillar of shame.
At this moment, he felt that everything was worth it.
He even fantasized in his mind how his comrades fought in the air and how panicked the enemy should be. When he was happy, he bowed his body and kicked hard, as if he was rushing to the face The cold wind passed by was like flying in the airplane.
As a man, who has never dreamed of flying a plane.
This made the comrades behind them very uncomfortable and it was too difficult.
Fortunately, Gao Zhendong had already arrived at the factory, which made them give up their intention of calling for support from comrades.
As soon as I entered the office, the comrade from the confidential room of the third branch factory came to find him.
"General Engineer Gao, the phone number of the Defense Work Committee, several comrades are coming to find you."
"Well, okay, please make arrangements. I will be notified after the procedures for verification are completed." The Defense Work Committee called to notify me specifically, and it seems that it was an important matter.
It is estimated that the other party had already set off before the call from the Defense Work Committee had called. It was only a few minutes before Gao Zhendong sat down and the person had arrived.
Seeing the visitor, Gao Zhendong felt familiar and didn't know anything else, but he still had an impression of the leader, as if he was seeing him while discussing satellites.
Is it here to ask for solar panels? NiMH batteries are just provided with ideas and technologies, but they are not made here, but Tang Shaohui is doing this. "Hello comrades, are you here for satellite power supply this time?" Gao Zhendong took the initiative to greet him.
The visitor didn't expect Gao Zhendong to have such a good memory. He was stunned for a moment: "Hello Mr. Gao, please introduce yourself. My surname is Zhu. Now the power supply is not urgent. The satellite power supply has other DC power supply of the same specification for simulation, and it has nothing to do with R&D. Influence, the research on the satellite camera load was also very smooth. We came this time for something else."
I only said my surname, but I didn't say anything else, and Gao Zhendong didn't care. Anyway, I have internal security The comrades are verifying that they don’t have to worry about other issues.
Gao Zhendong thought about it and it seemed that judging from the previous meeting, there was nothing else that needed to be done by himself.
However, as his fame and status within the system change, this situation is not uncommon. "Mr. Zhu, is it a material or an electronic system this time?" Gao Zhendong said with a smile.
"Uh... Strictly speaking, both are related." Zhu Gongdao, after saying that, he took out a piece of materials and began to introduce the situation to Gao Zhendong.
"...This is the case. After our calculations, the temperature of satellites in space may be as low as minus 100 degrees. We came this time because you are an expert in computers, electronics, and materials. Check with you whether the electronic system can work normally at this temperature? If not, what measures or material replacement are needed to work normally? "
After listening to his question, Gao Zhendong thought Thinking about it, his words were far beyond the expectations of Zhu Gong and the others.
"The electronic system will definitely not work normally after minus 100 degrees Celsius, but this is not a big problem. Instead, I think that compared to low temperatures, what you need to consider is the issue of high temperatures, how to dissipate heat , How to achieve thermal balance is the issue you should consider. "
Gao Zhendong's words immediately made Mr. Zhu, who had already spread out his paper and pen.
This is not a simple small problem. If you want to consider heat dissipation, many of the previous designs will be in vain. But space is obviously very cold. "Mr. Gao, we all know that it is very cold in space..." Mr. Zhu carefully said, afraid of hurting Gao Zhendong's self-esteem.
But before he finished speaking, Gao Zhendong took the speech casually: "Well, I know, broadly speaking, if you don't consider the special astronomical structure, the minimum energy can reach less than 3K." br>
Space is very cold, but under normal circumstances it will not be lower than the cosmic microwave background radiation of 2.725K. Of course, some special celestial bodies or astronomical structures will be lower than this, such as the Boomerang Nebula in the Milky Way. The ground can reach 0.5K. The refrigeration principle here is a bit like the vortex tube refrigerator created by Gao Zhendong for Research Institute, which expands the gas to refrigerate at high speed.
Gao Zhendong's words made Zhu Gong stunned: "Ah, Mr. Gao is also studying astronomy, he is versatile, haha."
Study? Cosmic microwave background radiation, isn’t this popular science knowledge in the direction of astronomy? If you know that this thing is considered to be astronomy research, then there will be more people doing research.
Not right! Gao Zhendong took two chances to search for the materials and then discovered a problem.
Damn, this thing has not been confirmed in 1962!
Luckily, he just said less than 3K in a vague way, which is consistent with the data that someone once imagined. If he said exactly 2.725, it would be a big fun!
Gao Zhendong didn't dare to talk in depth on this issue, and almost said: "It's not about research, I'll just read some miscellaneous studies."
Mr. Zhu smiled and said: "Well, since President Gao knows it." , that's easy to deal with. With such a low temperature, even if it's not deep space above the earth, the actual temperature is very low. There should be no need to consider heat dissipation, right? "
No mistakes, one song, one post One content, one in one 6, one in one 9, one book, one bar, one read!
Gao Zhendong understood that this is a problem with some brain teasers that many people will make, and some science fiction and space films are even more common.
He thought about it and gave an example.
"Mr. Zhu, I know it's very cold in space, but you have used a thermos, right? And don't forget that the electronic system needs to heat up."
The full name of the thermos should be a vacuum thermos, not a vacuum. Thermo bottle, this product can keep warm and cool, but actually maintains temperature.
"The thermos? Vacuum...heat..."
Mr. Zhu frowned and thought for a long time, then slapped his thigh. "Oh no! I forgot this! Chief Executive Gao, thank you so much! Thank you so much!"
There is no air in space, but in fact there is no medium, so the convective heat dissipation method is to stop, and it can only rely on radiation to dissipate heat, but the efficiency of radiation heat dissipation is relatively poor, which will cause a problem.
The temperature can be as high as more than 100 degrees in the sun!
And on the side where it cannot be exposed, it can be as low as minus 100 degrees.
It's easier to deal with the sun just by shining it. Use insulation materials to separate it and try to make the external temperature not affect the internal equipment of the satellite. No matter whether it is high or low outside, don't affect me anyway. .
But when the electronic system works, it will cause heat, but it will be a waste of time. This satellite is like being installed in an insulating bottle, and the heat cannot be dissipated and heat accumulates inside.
One more fatal thing is that in terms of power devices, it is often inevitable to use some electronic tubes or something. The electronic tube can withstand the high temperature itself. After all, it is just a big light bulb. If things go wrong, it is broken by this big light bulb. If it gets on, it will heat up by itself, but the heat cannot be dissipated. For other components in the system, it will be a waste of time.
That is why Zhu Gong is so anxious and thanks Gao Zhendong so much. He didn't think about this direction at all, and many designs were not considered at all.
This is just in the early stages. The later this problem is discovered, the greater the loss is possible.
Aerospace-grade electronic components generally have low temperature resistance of only about minus 50 degrees Celsius, but the minimum resistance to high temperatures is generally required to be above 120 degrees Celsius. This is the biggest reason. In fact, it is very hot in the sky, but it is not that cold. .
Gao Zhendong saw that he had already understood and smiled and said, "By the way, this is the problem. It is incomplete to simply consider insulation or heat dissipation. It may be necessary to consider the issue of heat dissipation of electronic systems and even heat balance. Specially designed related systems. Otherwise, even under direct sunlight, the spacecraft will experience extreme cold and hot at half of the time. This is not just a problem of whether the electronic system can work normally. The structure is not well designed, and the thermal expansion and contraction will not be Equilibrium can bring big problems."
"Yes, yes, I'll consider it comprehensively when I go back. Fortunately, it's still too late, otherwise the losses would be huge." Zhu Gong looked scared.
"As for the electronic system you mentioned, I can guarantee you this way that all the electronic devices provided by the 12th Machinery Department will be selected according to normal operation at 120 degrees Celsius."
< br>Gao Zhendong directly solved his initial problem, but now for Mr. Zhu, the biggest problem is obviously not this.
He communicated with Gao Zhendong for a while, and then hurriedly left the third branch factory with his own people. Today's trip is worth it.
(This chapter ends)