Chapter 404 The Gyroscope that cannot be built
Gao Zhendong received a call from Yu Yuncheng and heard him say that he was planning to change the sampling plan during the trial production of the third batch of mercury cadmium telluride crystals.
He agreed with both hands: "Well, your consideration is very reasonable. Since the rough relationship between crystal growth and time can be seen in the first two batches, your adjustment now is very suitable. And if necessary, we must find out what the specific process was during the period when the changes were most dramatic."
With Gao Zhendong's affirmation, Yu Yuncheng felt relieved to continue his experiment.
Gao Zhendong, who obtained Yu Yuncheng’s current test progress and specific product status, is also very satisfied with it. Judging from the news and data received now, the content of the previous paper is still very detailed and reliable. Regarding the mercury cadmium telluride crystal, everything is moving in the expected direction.
This thing involves several of his arrangements, so there can't be any problems.
Putting down the phone, the comrades from the No. 3 Factory Office brought a few people in and said that someone was looking for him.
Gao Zhendong looked up, yo, what a big job.
He asked the people from the factory office to leave, so they didn’t need to do anything about making tea. Anyway, he was used to doing it himself.
Then I made a call to the five domestic insurance companies. After Xie Jianye served as the deputy chief of the second domestic insurance company for a period of time, he was transferred to the newly established five domestic insurance companies as the deputy chief. This stock He is responsible for the work of the third factory.
An old deputy section chief became the section chief, and Xie Jianye became the deputy section chief. It was another kind of old man leading the new. Xie Jianye didn't have enough experience in onshore insurance, so he had to be led by someone else.
The five internal security groups immediately and quietly sealed off the perimeter of Gao Zhendong’s office.
After doing this, Gao Zhendong smiled with the visitor while making tea: "Senior Brother Zhang, this is a rare meeting."
The visitor was engaged in ballistics over the desert. Senior Brother Zhang of the missile guidance system, so as soon as he saw him, Gao Zhendong secretly told him that he had come to do a big job.
In any case, it is impossible for Senior Brother Zhang to make a special trip to the capital to have fun with him. There must be something important.
Senior Brother Zhang took the teacup and said, "It's rare to see you, but you have to meet me. You also know that I will definitely not come to you to gossip. This time, I have something to consult with you."
Senior Brother Zhang didn’t waste much time and directly stated his intention.
Gao Zhendong waved his hand first and did not say anything specific. Seeing him like this, Senior Brother Zhang did not speak.
After a while, the phone rang. It was from Gao Zhendong Internal Security Wugu that their work had been arranged.
Gao Zhendong then said: "Well, Senior Brother Zhang, you can say it now."
Senior Brother Zhang was shown off by Gao Zhendong's operation: "You are really careful."
Gao Zhendong smiled and said: "Senior Brother Zhang, I may not show this etiquette to others, but you, It must be treated with the highest courtesy."
The two laughed tacitly, and then Senior Brother Zhang explained the reason for his visit.
"Junior brother, you know about the anti-ship missile opening the scoring, right?"
Gao Zhendong nodded: "Yes, I know." Not only did he know, but he also got a piece of cards Woolen cloth.
"To tell you the truth, I came here this time after seeing the combat examples and seeing the information about strapdown inertial navigation in the internal scientific and technological intelligence report. I was very interested. We have already asked the Anti-Ship Missile Research Institute for it. I read the relevant information and saw that you were the initiator and the principle came from you, so I came over."
Gao Zhendong was a little strange: "This matter, Senior Brother Zhang, to be honest, I am. The principles are given and the computer is provided. The specific implementation work is done by the institute itself. If you come to me, it is definitely better to digest their information directly. "
Zhang. The president shook his head: "Their research results and information are very important, but as the initiator, your ideas are also very important. After all, their environment and requirements are different from ours. Maybe your original ideas are richer. But it is possible that they discarded part of it because it was not used or not up to standard.”
Information may be lost or wrong during the transmission process. For a new technology, listen to the original author. His opinions are very important, even if he does not do any specific implementation work himself.
Gao Zhendong also understands this truth: "Well, what are you interested in?"
Mr. Zhang said: "The application possibilities, application prospects, key points, etc. of this strapdown inertial navigation technology in our work. Or to put it another way, you can say whatever you want. I am interested."
To be honest, Gao Zhendong was really not very clear about such a specific thing. He thought about it and poured cold water on it first.
"Brother Zhang, in my opinion, strapdown inertial navigation is a very promising inertial navigation technology for you, but it is only a prospect now. If you want to use it, there may still be some problems. "
On the way here, Mr. Zhang had already digested and absorbed the information he received, and was obviously mentally prepared for it. He was not very depressed when he heard this: "Well, can you tell me more about it? A little bit?"
He discovered some problems, and now he wants to see if there can be any sparks with this founder. As for solving them directly, he has no extravagant expectations. Things are not like this. Easy.
Gao Zhendong did not answer directly, but asked a question: "Brother Zhang, you should have done a preliminary study and digestion of the information you received. Do you think the strapdown inertial navigation system used in anti-ship missiles is useful to you?" Are their needs appropriate? ”
That’s the question! It seems that Junior Brother Gao has already considered this! "To be honest, judging from the current situation, it is not applicable because the cumulative error is too large due to the sensor itself."
Gao Zhendong nodded: "Yes, this system is now The cumulative error is quite large. The reason why anti-ship missiles can be used is because they have active radar seekers as terminal guidance, but you should not have this condition."
The two of them did not explain why. Without this condition, Mr. Zhang just nodded very honestly: "Yes, there is no such condition."
Don't say that we don't have this condition. None of the strategic ballistic missiles at this time have this condition. Don't look at the original probability error of the later Zhangu-2 from 1,500 meters to 3,000 meters. It seems very large, but to put it another way, you can know that this is actually very large. It’s rare.
Its deviation is only one thousandth to two thousandths of the range.
Does it feel better if you look at it this way?
As for the mechanical gyroscope, even if the inertial platform is not considered, in addition to manufacturing accuracy and other requirements, there is actually the simplest truth - the bigger it is, the better the effect.
Under the same manufacturing precision, the larger the size, the smaller the relative error, not to mention the difference in rotation stability and other aspects.
But it is obvious that gyroscopes cannot be infinitely increased. With the range of ballistic missiles and the required accuracy, the installation space for one set of gyroscopes is already a bit tight, let alone three sets.
So anti-ship missiles can be used, but ballistic missiles are really not necessarily useful at this stage.
After listening to Senior Brother Zhang’s affirmative answer, Gao Zhendong nodded: “So based on the current technical conditions, the strapdown inertial navigation system of mechanical gyroscopes is of little significance to you. Instead of focusing on this, we might as well work hard to develop the entire high-precision gyroscope.”
For strapdown inertial navigation, it is only after the non-mechanically rotating gyroscope reaches a certain level. .
While Mr. Zhang nodded, he heard very keenly that there seemed to be something in Gao Zhendong's words.
"The mechanical gyroscope is not good, Junior Brother Gao, do you mean there is a gyroscope with a mechanical structure?"
Gao Zhendong suddenly got stuck. It is not a gyroscope with a mechanical structure. He does know one or two kinds. , but it’s not very easy to create it now.
He hesitated, but still spoke: "I have some theoretical considerations, but the conditions are not mature now, and I feel that it may not be possible to create it."
As for his answer, Mr. Zhang is extremely interested. Just the principles are fine. At least he can see a way.
"You have already thought this far? Great! Tell me, it doesn't matter if you are mature or not, the key is to point me to the next step."
Don't be afraid that the road is difficult to walk, but be afraid that there will be no way to walk.
Gao Zhendong said: "One is to consider MEMS gyroscopes and MEMS accelerometers. They are small in size and are expected to have good accuracy. However, this technology is very new. You can simply understand it as manufacturing size. Mechanical parts at the micron level are assembled into gyroscopes.”
The concept of MEMS was first proposed about a year ago. Mr. Zhang was completely unaware of it. Gao Zhendong gave a brief introduction to MEMS. .
MEMS (Micro-Electro-Mechanical-Systems) is a technology that combines microelectronics technology with mechanical technology. Of course, it is not as abstract as directly building a bunch of gears in a chip. Generally speaking, the number of mechanical parts in MEMS chips is not large.
But its few mechanical parts are indeed manufactured directly into the chip using semiconductor manufacturing technology.
"Hiss~~~~~~"
As soon as he heard this, Mr. Zhang immediately took a breath of cold air. I am afraid that this thing will not be used for the time being. Just hearing the principle makes people's scalp numb, which is beyond the limit. reached the limit of his imagination.
Integrated circuit manufacturing is not a thing yet. This thing is a bit overthought.
Good stuff, but too good.
"Is there anything else?" Since Gao Zhendong just said something, maybe there is another way?
Gao Zhendong doesn't know much about the others, but he does know another one, mainly because he is too famous.
"Senior Brother Zhang, do you know the phenomenon of light interference?"
Mr. Zhang nodded: "Yes, I know."
Are you looking down on me? Which Wudaokou person doesn’t understand this?
“Then there is another phenomenon that you should also know, that is, when light travels along a closed channel, if the closed channel itself rotates, it will change the optical path of the light.”
< br>
Mr. Zhang thought for a while, it seemed that this was the case, and nodded in confusion.
“Then by combining these two phenomena and observing the interference fringes, can we detect the rotation of this closed loop?”
Hearing this, Mr. Zhang was completely stunned. Damn it, I know nothing!
(End of this chapter)