The ups and downs of life in the Siheyuan

A conference room of the Commission of Science, Technology and Industry for National Defense was filled with researchers wearing military uniforms.

There were no less than 30 people by visual inspection, and the highest military rank was actually a senior colonel.

Military representative Tong Zhiyuan sat beside him, chatting in a low voice from time to time.

A 1.5*1 meter blackboard stood on the podium, and Li Yuan was explaining the principle of brushless DC motors.

The researchers below are constantly recording knowledge points.

Li Yuanxin picked up various formulas and blurted out various nouns.

"This is what I think about the power density... This is the engineering feasibility formula that I summarized after consulting various materials..."

"Peak efficiency is..."

"Load efficiency is..."

. . . . . .

He focused on reliability and put forward the dynamic balance theory.

“For motor design, manufacturing and assembly, a very critical step is to adjust the dynamic balance.

It affects the life of the motor and increases noise and vibration.

. . .

If the dynamic balance adjustment is not good, multiple harmonics will be generated.

. . .

These multiple harmonics can cause resonance, which can accelerate damage to the shaft end bearing. . . "

After 2 hours, Li Yuan completed his explanation.

Many researchers have been confused by Li Yuankan's talk, especially dynamic balancing. This concept does not yet exist in China.

Even here, they do not have such a reserve of knowledge.

Abroad began to study dynamic balancing in the 40s, and until now there are no simple and effective measurement and correction tools.

That kind of expensive, heavy and bulky dynamic balancing instrument is difficult to carry out practical application in industry.

"Teacher Li, when you mentioned dynamic balancing, you also talked about its harm.

It can be said that it helped me figure out a lot of fault problems that occurred in engineering, and I think what you said is very reasonable.

But don’t know how we can solve this problem”.

“The only effective method at present is to find a senior fitter for training.

They may not know what dynamic balancing is, but many level 8 fitters are already aware of this issue at work.

They can fine-tune it by feel, but of course every level 8 worker understands imbalance differently.

Therefore, it is difficult to guarantee the consistency of the final result.

To make precise adjustments and suit industrial production needs, specialized instruments are needed.”

“I don’t know, where can I buy such an instrument?”

After listening to the class today, many people could no longer sit still.

They are the main unit responsible for the research and development of ship engines, generators and electric motors.

These are the big guys, and they have to develop intensive maintenance programs and regularly replace critical components to increase ship availability.

Among them, the most seriously damaged ones are the bearings. They have been working hard to improve the quality of the bearings in the past.

Spindle bearings usually need to be replaced every 3 months.

This not only increases maintenance costs, but also reduces the ship's continuous working ability.

Today's lesson gave them a revelation and they realized that the culprit was actually the so-called dynamic balance.

According to this young teacher, solving the dynamic balance problem will not only increase the life span but also reduce maintenance costs.

More importantly, noise and vibration are greatly reduced.

These have always troubled underwater ships. For safety reasons, they sometimes have to shut down to reduce noise.

This greatly increases the degree of danger and makes it impossible to quickly escape from the danger zone.

Therefore, in just 2 hours, the audience was very excited.

The two universities looked at each other and said, "I never thought that a student could be so powerful. He deserves to be from Huaqing University."

"Haha, you are overthinking this kind of student. Huaqing is the only one, maybe the only one in the country."

"Yes, if we can solve this dynamic balance, our combat effectiveness can be improved by several levels."

"Yes, it can be said to be an unexpected surprise."

"Although I don't fully understand those terms, I understand one thing. As long as anything rotates, there is a problem of dynamic balance."

"Yes, once a breakthrough is made, the applications will be very wide."

The reason why Li Yuan has grown so quickly has something to do with being backed by Huaqing University.

Huaqing University purchases the latest technical journals from various countries around the world every year, some of which are from special institutions in Hong Kong, such as China Resources Corporation.

There are also alumni who studied in the West in their early years. They will buy some important journals and send them back to China.

After years of accumulation, the library has become quite large.

However, most people only pay attention to their professional journals, unlike Li Yuan, who will read and memorize any scientific and technological information.

Sometimes it’s learning, and sometimes it’s using these materials to recall techniques from later generations.

When a person knows the direction of technological development, reading these technical journals can be said to be an easy task and get twice the result with half the effort.

It's like you know the answer and then start the process of working backwards.

Not to mention, he also has an inhuman photographic memory, a powerful brain, and magical telepathy.

In the past, he had always called it thoughts. At the latest stage, through reading, he felt that calling it "thought power" was more noble.

Li Yuan looked at the researcher who was eagerly waiting for the answer, feeling a little unbearable.

"Not yet, at least not in our country."

"You have such profound theoretical knowledge, can't you build one yourself?" a female researcher asked eagerly.

"this..."

Li Yuan suddenly thought that there were optoelectronic devices on the 911 computer.

Piezoelectric ceramics are also mentioned in materials chemistry.

He could try to design a piezoelectric ceramic.

After reading foreign journals, I found that the technology of piezoelectric ceramics is still in laboratory research and has not been put into practical use.

He has the memory of future generations, and with the help of golden fingers, it is not a dream to make it available in advance.

His hesitation made the female researcher a little confused, "I'm sorry, Teacher Li, I know this is difficult, but it is really important to us."

Li Yuan looked at the nearly 40-year-old female researcher opposite. In order to gain knowledge, she had forgotten the age gap between the two parties.

In terms of language and demeanor, he was indeed regarded as a teacher.

Li Yuan smiled and said, "You reminded me, I can give it a try."

"Great!"

Other researchers also showed excited expressions.

"As long as you have any needs, we will try our best to satisfy you," said the same female researcher.

Li Yuan nodded sheepishly, "Don't worry, I will notify everyone as soon as I have any clues."

Then Li Yuan spent another two hours explaining the doubtful points to everyone.

His profound theoretical knowledge once again conquered everyone.

The two colonels standing outside the conference room were filled with relief.

"Old boy, you have discovered a gem."

"I didn't expect that Sister Zheng has always been proud of her skills. I didn't expect to see another side of her today."

The Sister Zheng mentioned by Tong Zhiyuan is the female researcher who just asked the question.

"I have a feeling that this class can change the history of our ships, especially underwater ships."

"Same feeling!"

"When the enemy warships cruising outside the country suddenly cannot track our underwater ships, I really want to see their expressions."

"I think they will never dare to get too close, they can only run away."

"Hahaha..."

The two walked into the conference room smiling.

"Okay, everyone should rest for a while. It's already 2 o'clock in the afternoon. Let's eat first and discuss it in the afternoon."