Rule department scholar

Zhang Wei joked with a sour voice, "Fan Lei, you are wrong, you can't favor one person over another, they are all women, and I want perfume too."

"Haha, no more, just one bottle."

Fan Lei didn't hear anything, he replied very casually, and said, "Let me know in advance what you want next time, I really don't know how to choose gifts for people."

"Then forget it this time."

Zhao Yi didn't get into the topic, but turned his head and saw Yan Yi, took out the perfume and smelled it, then raised his head and looked at Fan Lei secretly, his face seemed a little... shy?

"She really likes Fan Lei?"

"Fan Lei doesn't know?"

"But why did this guy just happen to buy a perfume? Next time, he happens to buy a watch? Buy jewelry? Buy a ring..."

"Forget it, let him care so much!"

……

Zhao Yi has many things going on.

Some things are planned and some things are not.

Before he could relax for a long time, Zhang Hongtao, a materials expert at the University of Aeronautics and Astronautics, suddenly approached him directly and said that he invited Zhao Yi to join the expert team and visit a scientific research base.

"Brother Zhang, are you kidding me? What scientific research base am I going to visit? I don't even know what it's for."

"Return to the expert team?"

Zhang Hongtao said, "It's not necessary to go, but several people recommended you. If you know that I know you, let me come over and ask your opinion."

"What expert group, what are you doing?" Zhao Yi asked strangely.

"A few engineering academicians led a team to the scientific research base in Huan'an City to visit large-scale scientific research projects in China." Zhang Hongtao whispered, "It has something to do with military-industry, which means let the experts go and see together. Question, several people have recommended you."

Zhao Yi shook his head and said, "I still don't understand, what kind of large-scale project is it? Can you tell me?"

Zhang Hongtao thought about it carefully, and said, "Actually, there is no need to keep it secret. It has been reported abroad. Aircraft carrier, you know? What we are going to visit is the technology research and development base related to the aircraft carrier."

"what?"

"Let the top domestic scholars go and see if they can offer their opinions in some difficult areas, or simply have any better suggestions, and so on." Zhang Hongtao continued to explain.

Zhao Yi was very surprised, "This kind of thing should have a high level of confidentiality, right? Can I go?"

"Of course I can."

Zhang Hongtao nodded affirmatively, "Although you are not in the system, you have already made great contributions, and besides, you have been recommended by several people!"

He said with a smile, "I heard someone who recommended you go say that you are still in college, even if it is a college practice activity, I don't ask you to give any valuable advice, but it is good to broaden your horizons."

"However, to be honest, most of the group just went to see it, and they don't work there. What opinions can they offer? I am the same. Therefore, there is no need for pressure."

Zhao Yi thought about it carefully, then nodded and said, "Okay, let's go and have a look together."

Chapter 4 I really don't know much about application technology!

Huan'an City Research Base?

Expert group?

Zhao Yi also finds it quite interesting. In the past, he could only read domestically-made aircraft carriers on the news, and his understanding of its technology was only through media reports. It was really good to be able to go directly to the aircraft-carrier logistics research base. University practice.

"University practice class!"

"This word is really subtle..."

Zhao Yi laughed when he thought about it.

Recently, there is no special research. You can think about the problem of particle mathematics slowly. It is also good to participate in a "college practice".

A week later.

There was a phone call from above to say hello, and a man in military uniform drove over to contact Zhao Yi and then he went there. He was responsible for bringing Zhao Yi to the scientific research base.

The people in military uniforms just waited outside the school, so Zhao Yi went back to pack his luggage and went to the student dormitory to get a computer.

Seeing Zhao Yi's computer, Li Renzhe asked strangely, "What's the matter, are you leaving?"

"kindness."

"What are you going to do? Accept an award? Go to an academic conference, or something, I guess... you're going to give a speech?"

"No."

Zhao Yi said calmly, "I'm going to participate in the university practice, why don't you go?"

"What kind of practice, why don't I have it?" Li Renzhe asked in a daze, and muttered in a low voice, "Didn't I hear that there is a practice class?"

Zhao Yi shook his head and said, "I don't know, anyway, I was notified." He said and left with his computer.

Li Renzhe delivered it to the door, and immediately went over to check the class schedule, and then entered the school's intranet to check the 'practice activities'.

Meng Zheng pushed the door open and walked in.

Li Renzhe turned his head and asked, "You also want to pack your things and go to the practical class?"

"What practical class?"

"Practice class? Zhao Yi has gone! I thought only good students can go." He meant top students.

Meng Zheng shook his head, "There is still class in the afternoon, what kind of practical class, you must have been fooled."

"..."

Li Renzhe opened his mouth for a long time before he suddenly cursed, "Damn, Zhao Yi, it's really not a joke!"

"Am I such a fool!"

Standing by the side, Meng Zheng looked over with strange eyes, and almost nodded in approval of this sentence.

……

All the way, more than eight hours.

Zhao Yi arrived at the scientific research base in Huan'an City in a military vehicle. He felt a little dazed, so he got out of the vehicle and walked for a while to get better.

Someone took him to the dormitory to store his luggage, and then he went to the cafeteria for a meal.

It was already night.

Zhao Yi was the first one to come, and no one else came for the time being, so it was impossible to have any entertainment at night. He met several scientific researchers in the base, greeted them a few times, and then went to bed.

After waking up and having breakfast the next day, the scientific research base became lively. This time, he found the research and development center with a sign, and someone was waiting there at the door, "Academician Zhao, being famous is worse than meeting!"

"You are really young!"

A middle-aged man in a white military uniform shook hands enthusiastically, and introduced himself, "I'm Ma Mingwei, how old are you, academician Zhao, is it not too much to call me Brother Ma?"

"Wei...Brother Ma, just call me by my name." Zhao Yi said with a little embarrassment, and smiled naturally.

Ma Mingwei is about fifty years old, and he is really young when he calls him 'Brother', but no wonder he talks about addressing when he comes up, and the suffix of 'Wei' directly calls 'Viagra', which is not very pleasant.

The two did not talk about the topic of calling each other.

Ma Mingwei came here specially to wait for Zhao Yi, he welcomed Zhao Yi into the building, and talked directly about the matter, "This time, I will tell the higher-ups that I hope you are in the expert team, I am asking for you! "

Zhao Yi nodded and asked, "Is there any problem?" He explained in advance, "I'm in theory, and I don't know much about technology and application."

"Don't say that, you are recognized as a top algorithm master, a computer expert! Besides, I know that you have designed a mathematical structure for the domestic satellite navigation system, right?"

"That's right."

Zhao Yi nodded and said.

Ma Mingwei said, "This time, we are in a similar situation. My team is in power engineering, and is responsible for the catapult on the aircraft carrier."

“电磁弹射器？”

"Yes, you know it too!"

Zhao Yi asked with interest, "How is the progress now? Can it be installed on the aircraft carrier?"

Ma Mingwei shook his head and said, "The current ship is definitely hopeless, maybe in the future. Our current mature technology is only steam-powered ejection. Electromagnetic power has many problems to overcome!"

He introduced the electromagnetic ejection technology with emotion.

The catapult on the aircraft carrier is used for the take-off of the carrier-based aircraft. To put it bluntly, it is like a spring. The carrier-based aircraft is directly ejected into the air, and the take-off process is completed directly.

When the planes are ejected one by one, the speed of takeoff will be greatly accelerated without having to queue up on the runway.

The technology of steam ejection is relatively low-end, and its practicability is not very strong. Internationally speaking, electromagnetic ejection is the most cutting-edge technology. Only the aircraft carrier Ford, which is about to be launched, is preparing to load an electromagnetic ejector. Compared with steam catapults, electromagnetic catapults have many advantages, such as small volume, low requirements for auxiliary systems on board, high efficiency, light weight, low operation and maintenance costs, and so on.

Electromagnetic catapult technology is considered to be one of the core technologies of future aircraft carriers.

The electromagnetic catapult is composed of four major parts, which are power supply, energy storage device, ejection motor and overall control system.

The power supply naturally needs no explanation.

Energy storage device, also called "forced energy storage device", is like a lithium battery for energy storage in a car, so that electronic equipment can operate normally when the car is not started.

The ejection motor is the core part, just like the engine of a car, the main propulsion core responsible for ejecting the carrier aircraft.

"We want you to take a look at the control system." Ma Mingwei explained, "The control system is the central nervous system, the brain of the entire EMALS system. It is responsible for receiving data from all sensors, issuing control commands according to different situations, and coordinating well. How the whole system works, et cetera."

"The control system is the core, connecting all the components together."

"But in this regard, to be honest, our team's confidence is not enough, because we are afraid that if we build a control system, problems will often occur as a result."

Ma Mingwei frowned and explained.

Zhao Yi understood.

No matter what kind of equipment or equipment, no matter how good the components are, the soft core must keep up. Otherwise, no matter how high-end the hardware facilities are, they will not be effective. The soft core can make the equipment and equipment more efficient.

This is the same as a computer operating system.

No matter how high-end the configuration is, even if the operating system before WIN2002 is installed, it will not work at all, which is a waste of hardware configuration, but the soft core is not as high-end as possible, the most suitable is the best.

Ma Mingwei had a general discussion with Zhao Yi, then took him to the operation room and found a large stack of design drawings.

The various designs on the drawings are densely packed, making people dazzled, because I hope Zhao Yi can help to look at the control system and put forward some suggestions for improvement. Ma Mingwei explained very carefully, starting from the power system, and continued to explain, mainly Let Zhao Yi understand the overall structure and know what the control system should do.

The control system not only controls the hardware, but also needs to make adjustments and issue instructions according to the situation.

For example, aircraft type, environmental climate, aircraft carrier operating status, etc., issue control commands based on known parameters, and at the same time adjust the coordination of power generation, energy storage, and power electronics subsystems, so that the system can work at a high speed , high precision and high reliability.

The loading time and size control of the force are very critical.

The loading methods of different aircraft are also different, so it is necessary to constantly make changes on their own, because in a combat state, it is impossible for the responsible personnel to temporarily input instructions to let the aircraft take off quickly.

The control system must self-regulate, issue instructions based on sensor data, and at the same time minimize the impact on the power electronic system, power supply, and energy storage system.

and many more.

There are also many problems in management and communication.

In the process of Ma Mingwei's continuous explanation, Zhao Yi also occasionally asked questions, and there were things he didn't understand at the beginning.

"Why is the determined power supply scheme an AC power supply? The drawing just now is a DC power supply, right? If according to what you said, isn't DC power better? The problem will be simplified."

Ma Mingwei shook his head and said, "The original design was AC power, and the technology in country M is also AC power. The DC scheme has also been thought about and designed. You saw the blueprint, but the power can't keep up. When the electromagnetic catapult is working, the load The impact is very large, and the power capacity needs to be very high, and the AC power can meet the demand."

Zhao Yi listened and nodded, "But I think we can still try the direct current solution." He took the blueprint just now, pointed to a few places and said, "I think these places can be corrected."

"How to fix it?"

Zhao Yi said seriously, "For example, here is a normal power supply. But a brushless motor with constant current can be used. If the output voltage is lowered, the demand for power supply capacity can be reduced."

"Also, here, you can increase the number of fan blades and cut them thinner, so that you can output higher power..."

"Also, here. Make the stator of the rotary motor longer, and the power output is indeed more stable. However, I think we can consider doing two solutions together, so that the rotor of the rotary motor and the rotor of the rotary motor can be continuously switched between long and short. You can change the power mode to adjust..."

"Also, here..."

Zhao Yi said six points in one breath, then stopped to take a sip of water, then turned his head to look at Ma Mingwei, and added, "I don't know much about technology, I just said it according to my ideas, and it's not good. Don't be surprised."

Ma Mingwei didn't answer. He was completely stunned with his mouth half open. Write and draw on it.

This writing took more than half an hour.

Zhao Yi didn't bother Ma Mingwei either, but wandered around in the operating room, and then went to the outside corridor to look at the scenery through the glass. The people who had just entered the operating room saw Zhao Yi and asked with interest, "Zhao Yi Academician, why are you standing here? Where is Academician Ma?"

"Inside, but don't bother him."

"Oh."

Later, several people stood at the door, poking their heads to look inside to watch Ma Mingwei write and draw, discussing with each other what exactly he was doing.