The origin of this propeller design drawing is quite peculiar, it is not that Chen Xu stole it from the American imperialist shipyard, but that when he stole the source code of the CNC machine tool in the Swede's CNC machining center, he accidentally found the propeller design parameters of the "Seawolf-class tactical submarine" in the computer.

It is clear that the Swedes are ready to machine this propeller with CNC machines.

The military industry of the Swedes is unique in Europe, and the submarine manufacturing technology is indeed unique, although the nuclear submarine technology is not good, but the conventional submarine is known as the Nordic ghost, which is very powerful. It doesn't matter if this propeller was given to the Swedes by the American imperialists, or stolen by the Swedes, in short, the rabbit was stolen by the way.

After bringing it back to China, the domestic technicians scoffed at this propeller, thinking that in addition to the formula of the material used to make the zuò propeller, the shape design is already the top in the world in China, and the foreign design is really not good, so this propeller has no research value.

However, the military value of this propeller is still very high, and the military happily imitated a real propeller according to the design parameters, and then collected the sonar number jù produced after the propeller rotated in the seawater. In the future, as soon as the sea wolf of the US empire approaches, he will immediately strip off his underwear and be captured by our sonar, and the sea wolf, an arrogant deep-sea hunter, will change from a hunter to a prey in a blink of an eye.

Of course, no matter how capricious Chen Xu is, it is impossible to build a real submarine propeller, not to mention how expensive the materials for making this propeller are, and it may not be possible to sell the tank factory.

Even if Chen Xu scraped together enough money for materials, how to refine special steel as a blank for propellers is a big problem. Now Baosteel doesn't have zài! Without modern metallurgical equipment, you just can't make this material.

The special steel poured out of the smelted steel in the old steel blast furnace in China, let alone forged the finished product, the propeller will break in the blank processing stage. The metallurgical equipment is backward and not up to standard, and the steel cannot be qualified, which is the basic problem.

Finally, in the processing stage, the propeller blades require large-scale multi-axis and multi-linkage advanced CNC machine tools and dozens of master technicians for more than three months of processing and polishing before they can be finely crafted.

Senior technicians engaged in processing may be easy to find, but CNC machine tools can only be sighed.

This kind of machine tool is the heart of the industry of Westerners, it is their most important home, and it will not be sold if there is not enough profit.

Advanced CNC machine tools even the Soviets do not have, Lao Maozi has CNC machine tools, but the processing accuracy is far inferior to the West, for example, Maozi's Kilo-class conventional submarine is not good because there is no high-end CNC machine tool to guide the paddle blade processing, the noise generated by the propeller after agitating the seawater, the US military sonar can be detected hundreds of nautical miles away, and is jokingly called a deep-sea tractor by the US imperialists.

In the end, Lao Maozi spent a huge amount of money to get three high-end CNC machine tools from Japan, making the Kilo-class submarine a veritable black hole in the ocean.

Later, Japan sold high-end CNC machine tools to its sworn enemies for a small amount of money. After this kind of prodigal behavior was exposed, the script chicken was almost not pumped to death by the American emperor's poop.

Fortunately, Chen Xu only needs to make an electric fan, and the accuracy of the fan blades has not yet reached the requirements of the nuclear submarine propeller. He just needs to be similar, and as for Shen Yun or something, he doesn't need to delve into it.

As for the material of the fan blade, no special steel is used, only ordinary thin steel plate is needed.

Even without using a CNC machine, Chen Xu only needs to identify all the radians of the propeller blades, and the workers in the workshop can file a mold for you with a file, and with the mold, you can use a stamping machine to mass-produce high-precision micro propeller blades.

Although it is a simplified version of the propeller, the machining accuracy is not as perverted as the real submarine propeller, but the mute function is not a lot at all, after agitating the air, it can achieve an absolute breeze, and you can't hear the sound without putting your ears in front of the fan.

Never underestimate the worker's file, in the hands of the grandmaster-level technician, the accuracy of the mold filed with the file is no worse than that made by the CNC machine.

The only difference between the two is that a CNC machine can produce a paddle in just a few hours, while a high-level mechanic can produce a paddle in a few hours.

Chen Xu used cutting-edge propellers to make electric fan blades not to show off his skills, but to only have the most cutting-edge military design drawings in his mind. After all, Chen Xu is a black lens that terrifies European and American countries, and every time he makes a move, he must go to the most cutting-edge weapon design, and a lower-grade weapon is not worth letting Chen Xu go to the task.

So Chen Xu searched in his memory over and over again, one by one, the cutting-edge is advanced, and only the propeller of the submarine is the most suitable for fan blades.

You can't use the turbine blades of an aero engine or a gas turbine to make an electric fan. The number of blades in that thing is too much, each fan blade is welded by hundreds of blades, even if it is reduced to an electric fan, it is extremely complicated, and the cost of man-hours is too great, so the propeller compares it to it, and winning the championship becomes the best option.

After modeling the electric fan in his mind, Chen Xu disassembled the designed fan into parts, then sketched the parts one by one, and marked the design parameters next to them.

Drawing is a laborious thing, and it is extremely boring.

Chen Xu spent at least two-thirds of his life drawing, and every time he came back from a mission, he stayed in the studio for as little as half a year or two or three years, copying drawings with the help of holographic equipment and assistants.

He is obsessed with drawing all year round, not impetuous, and his meditation skills have been practiced. He can sit for days on end without getting up.

Today is his younger brother's first day at work, and Chen Weiguo is very happy, because his younger brother has finally grown up and can work to support himself.

Chen Weiguo is nominally the deputy director of the factory, but his grandfather, Chen Hu, the director of the factory, is too old to do anything, and the operation of the entire military factory is actually managed by Chen Weiguo. In a large military factory with nearly 10,000 people, there are so many trivial things every day, and he is busy with official business all day, and he has no time to go to the workshop below to see his brother's work.

Finally, when it was time to get off work, Chen Weiguo thought that he couldn't let his younger brother go home alone, so he temporarily left behind his endless official duties. Putting the briefcase under his armpit, he happily went to the fan workshop to prepare to go home from work with his younger brother.

Before I arrived at the fan workshop, I saw the entrance of the workshop and the surrounding road on both sides of the abandoned debris, and several workers were pushing a small cart out of the workshop with their bare arms, and then dumping the garbage on the car on the side of the road.

I don't know what happened, Chen Weiguo hurried over, and as soon as he entered the workshop, he saw the workers, some of them were using shovels to shovel up the iron filings on the ground and transport them away, some were spraying solvents on mechanical equipment and then wiping off the oil stains on them, and some were stepping on a herringbone ladder to wipe the windows at high places.

"Old Clock...... What are you doing here? What a stoppage! What about Chen Xu's others? Chen Weiguo walked up to Zhong Jian, who was cleaning the window, and asked anxiously.

"Director Chen said that the dirty and messy workshop affects the work efficiency, so let us stop work and do a big cleaning. He himself went home and said that the fans we produce now are too substandard, so he went home in the morning to design the ECG fan. Zhong Jian and his co-workers worked for a day, and watched the workshop brighten up little by little, and their mood improved a lot.

Hearing that Chen Xu had returned home early, Chen Weiguo's anger came up. And he didn't discuss it with himself, so he let the workshop stop production for a whole day without knowing how much money he lost!

Chen Weiguo wanted to make these workers stop these meaningless work on the spot, but he also thought that his younger brother did not have enough work experience at the beginning, and if he openly opposed his opinion, his prestige among the workers would be greatly reduced, and he would not be able to control the workshop in the future.

Thinking of this, Chen Weiguo forcibly suppressed his anger and hurried home to prepare for a good training of his younger brother.

"What about Little Five? Did he come back in the morning, what was he doing now! When he returned home and saw his wife who opened the door for him, Chen Weiguo, who was angry, opened his mouth and asked.

"I sent my son to school, and when I came back from grocery shopping, I saw that he was already in the house, and he didn't get up all day today, and he refused to come out for lunch at noon. Liu Yanhong took Chen Weiguo's briefcase and held it in her hand, frowning and complaining.

After entering the house, Chen Weiguo walked quickly to the door of Chen Xu's room, and as soon as he pushed the door open, he saw him hunched over his back on the table "rustling" and drawing drawings, the dusk sun of the setting sun shone on him, pulling out a long shadow in the room, the room was very quiet, Chen Weiguo had rushed to the throat of the question at this time had to swallow his stomach, he was also a designer, and knew that at this time it was the most impossible to disturb the designer's work.

The ceiling fan on the roof flickered, and the bed was full of tiled design drawings, Chen Weiguo copied a picture and squinted at it a few times, and immediately judged that these were all parts design drawings of electric fans.

Quietly walked behind Chen Xu on tiptoe, and saw that he was engrossed in drawing a fan blade, this fan blade is very strange that there are seven blades, and the drawn picture is actually three-dimensional, which looks lifelike. The fan blade is densely written with a number of jù, which should be the parameters of processing.

So many drawings must be the credit of his younger brother all day, Chen Weiguo is not angry, and quietly walked to the door, turned on the light in the house, quietly closed the door and retreated. As for the suspension of work, let's wait until his design drawings are completed, and then ask questions!