Any technology is developed step by step, there is no so-called black technology, and there is no extraterrestrial technology.

Take B2 as an example, the predecessor XB35, but the XB35 uses a propeller engine, and then obtains the HO229 of Sandezi, and the technical route is clearly understood.

After the bangs of the three-axis CNC machine tool were made, they were handed over to Gou Rong, who first led the technicians of the entire workshop to understand the three-axis CNC machine tool technology.

Then we began to develop four-axis CNC machine tool technology.

Liu Hai serves as the chief technical engineer of the CNC machine tool workshop, and the four-axis CNC machine tool can be said to be made under the condition that Gou Rong and others are groping and Liu Hai is pointing out.

Now there are nearly 500 technicians in the entire CNC machine tool workshop.

The 500 people are divided into more than a dozen departments, because there are too many systems involved in CNC machine tools, and the more technicians are needed in the future.

Except for the workers of the motorcycle factory, who are the students who graduated from the motorcycle factory, there are no outsiders involved.

The Motorcycle Factory University has already opened a major in CNC machine tools, and it is foreseeable that this major will become a large department in the future.

Gou Rong nodded at Liu Hai's encouragement: "Thank you Liu Gong for your encouragement." ”

"It's time to report the good news to the factory manager." Liu Hai nodded, there are too many things involved in CNC machine tools, and with the development of information technology, the development is getting faster and faster, and there are more and more types of development.

Bangs are not very proficient in this aspect, and can only know the general direction, so they can only control the general direction.

Of course, Liu Hai feels that if he wants to plunge into the CNC machine tool industry now, then he will make achievements.

There must be no time to do other things, so Liu Hai will support Gou Rong.

Sun Aiguo has long known that the four-axis CNC machine tool will be tested recently.

After getting the report, he hurried over, this is about to end the year, Sun Aiguo, as the director of the factory, has a lot of things.

Besides, with bangs here, Sun Aiguo is not worried about whether the project can be successful.

"Okay, okay, I'll give you credit." After Sun Aiguo came, he re-demonstrated it, and Sun Aiguo said happily.

The technicians in the workshop, as well as other workers, also slapped their hands happily.

Then Sun Aiguo made a speech.

"The four-axis CNC machine tool is the most advanced CNC machining equipment in China."

"This means that the distance between us and similar foreign products is getting smaller and smaller."

"I hope that everyone will continue to work hard and strive to surpass foreign countries one day."

The workers and technicians below also applauded when they heard the factory director's speech, and Liu Hai also applauded on the side.

After the factory director left, Liu Hai called Gou Rong aside alone.

"There is still a big gap between our technology and foreign technology, and you, as the person in charge, must always warn yourself!" Liu Hai called Gou Rong aside, mainly to pour cold water on this guy.

"Liu Gong, I understand!" Gou Rong nodded.

"After the four-axis CNC machine tool, there are five axes, six axes, seven axes, eight axes, and even nine axes and ten axes, in addition to four-axis linkage CNC machine tools, five-axis linkage CNC machine tools, that is, multi-axis linkage between each other."

"If it is subdivided, it is also divided into CNC equipment of different materials, the future of this industry is very broad, of course, the more difficult it will be in the future."

"Next, I'm going to build a supercomputer in our factory, so that you don't have to rush into fire when you calculate."

"However, manual programming and calculation can exercise people, and programming will become a huge discipline in the future." Bangs continued.

"Liu Gong, I understand." When Gou Rong heard these nouns coming out of his bangs' mouth, he felt that his head was big.

What kind of parts need nine-axis solid axis processing equipment or multi-axis linkage equipment, how terrifying this calculation amount will be.

Hearing Liu Hai say that he wanted to make a supercomputer, Gou Rong was also overjoyed, and if he had this, he could greatly speed up the calculation.

The design of the entire CNC machine tool is inseparable from calculation, and each system is inseparable from calculation.

Whether it is the main engine, drive, auxiliary, programming and other ancillary facilities, it needs to be calculated.

Even the coolant flow rate and the various parts related to the coolant need to be calculated, and it is not just a matter of installing a coolant system.

In addition, there is the running speed of the spindle, the stroke and so on.

"After the mass production of four-axis CNC machine tools, the project will be established as soon as possible, and the five-axis CNC machine tool and the four-axis linkage CNC machine tool will be approved as soon as possible." Bang Hai patted Gou Rong's shoulder again, the five axes are not so easy, don't look at the difference between the four axes and the five axes, but in terms of calculation and programming, it is simply a leap.

This is also why Liu Hai wants to make a supercomputer, if there is no supercomputer, I don't know how long it will take for the CNC machine shop to complete the design.

"Understood!" After listening to it, Gou Rong no longer had the joy that the factory director praised just now, and he just thought about the four-axis linkage CNC machine tool and the five-axis CNC machine tool related things, after all, he had to write a plan.

Bangs left the four-axis CNC machine shop and came outside to be cold.

Winter in Kyoto is like this, it's already mid-December, and the 76th year is coming to an end.

Bangs are back in the turboprop engine manufacturing workshop, which is probably the most secretive workshop in the motorcycle factory, so only Bangs can easily enter and exit here without being inspected in any way.

Because there is no need, everything is dominated by bangs, and even if the factory director comes, he must take the initiative to accept the inspection.

Of course, the site of the turboprop engine manufacturing workshop is also the largest.

Liu Hai came directly to the technical department, and half a month ago, he handed over the design parameters of the cabin to the technical department here.

Here, the technical department does not blindly design according to the design parameters provided by the bangs, but reviews the entire design parameters.

Of course, their review is not a redesign of the review.

It depends on whether the results of the design parameters are consistent, as for why the design parameters of this place should meet this requirement, the people in the technical department can only slowly understand the technology inside.

"Liu Gong!" Seeing the bangs coming, the people from the technical department hurriedly greeted them.

There are also hundreds of people in the technical department here, and it is also divided into many departments, because there are many systems on the plane.

"How?" Seeing that the person in charge was coming, Liu Hai asked.

"We have reviewed the results of the calculation of the parameters and have started to design."

"How long does it take to take out the design of the aircraft girder?" The aircraft girders mentioned by Liu Hai are not the car girders that everyone thinks in the traditional sense, the girders of the aircraft are circular, in which the girders near the wings are close to each other, and the rest of the places are far apart.

Students who have taken civil airliners may have found that there is a gap between some first-class cabins and economy class, and there are two doors, which is the girder of the aircraft, which is the entire circle.

This girder of the aircraft requires a super-large casting press.

Of course, before there was no super-large die-casting machine, this girder could be broken down into several pieces.

In other words, the circular girder is divided into four or six pieces for assembly.

However, this kind of safety is relatively low, because this kind of assembly is not as good as the integrated structure in terms of pressure bearing capacity, tensile resistance and its own seismic resistance, and the material strength itself is not as high as that of the super-large die-casting machine.

It is also a necessary equipment for the manufacture of military medium-sized and large transport aircraft, as well as super-large transport aircraft.

As for where this girder is distributed in the aircraft, generally speaking, there is one in the nose, then one in front and behind the wings, one in the wings, and finally one in the tail.

The image point is to use these aircraft girders as the stability system of the entire fuselage.

Because the force near the wings is relatively large, the girders in this place are closer to each other.

This is also the first time that Liu Hai has introduced this concept of aircraft girders, laying the foundation for the design of large transport aircraft and ultra-large transport aircraft in the future.

"According to the planned schedule, it will take a month and a half." The person in charge spoke.

"Hmm!" Liu Hai nodded and calculated, if the first design is fully up to standard, the drawings will be sent to the southwest double, and if the mold is opened, it is estimated that the parts will be able to be seen within 6 months.

This kind of girder is not a uniform size, because different positions need to install different equipment, and the girder at the middle wing also needs to install the wing, so the position should be reserved first when designing, so when making molds, molds of different specifications should also be made.

In addition, the size of each place is also different, so the data of this girder is completely different.

Of course, these molds will not be wasted when they are manufactured, because it will be faster to have these molds when the aircraft is mass-produced later.

In fact, the time to actually cast the parts is not very long, just like it only takes 15 seconds to cast an aircraft landing gear.

The oversized casting press can also save material weight, which can reduce the weight of a single aircraft girder by more than 15%.

The same is true for the landing gear, which can be made with a large die-casting machine and a normal one, and the weight difference can reach 18%.

In addition, the wing is the same, if the main beam inside the wing is made of die-casting machine, the safety and service life are much higher than those manufactured by other methods.

This is also the reason why only a few countries in the world can manufacture large aircraft in the later world.

Because without the die-casting machine, the safety of the aircraft will be very low.

Liu Hai knew that it seemed to be Yun Shi in history, that is, because the girder adopted the splicing mode, there were many problems in the flight, and the other party who cooperated at that time was dismounted because of the relationship between the two countries.

In fact, to put it bluntly, we haven't learned it yet, so the master picked the pick and ran away, and the fat bear was the same back then, teaching us the half-pull technique and running.

As an apprentice, I just wanted to continue the project at that time, but I didn't have the ability, so I had to give up.

Of course, from the perspective of interests, this equipment is actually a loss, because this equipment is idle for more time.

But you can't talk about the relevant personnel, let them go home on vacation when they are free.

"Let's design the simplest design first." Bangs refer to the frame at the nose position.

This girder is located at the junction between the nose and the fuselage.

The main thing is to give this design to the duo first, so that they have something to do.

"Understood!" The person in charge nodded.

"Come to me if there's anything!" Bangs didn't look at their design specifically, anyway, the design was finished to show himself.

Then the bangs looked at the time and got ready to get off work, because the bangs also had to calculate the wings, landing gear, these parameters and take them out.

Of course, there are also some things that the bangs are not prepared to calculate on their own, such as the loading system of the warehouse.

As mentioned earlier, the cargo compartment of this transport aircraft adopts a two-piece structure.

When loading and unloading, the lower piece directly forms a slope, and there is something similar to a winch inside the engine room, as long as the goods are placed on the slope, the goods can be pulled directly into the cargo compartment through the winch.

When unloading, you can also use this ramp to directly drag the goods out of the warehouse.

This is a relatively simple system for bangs, and there is no need to do it yourself.

Let the people in the technical department exercise on their own.

All you need to do is approve the final design.

Liu Hai had just returned to the maintenance department and was about to get off work, when Sun Aiguo came again.

"What's the matter with you, Director?" Bangs are a little strange, it's just been a short time since I met, and I didn't say anything just now?

"The West wants to issue airworthiness certificates and flight permits to our twin-engine turboprop transport aircraft!" Sun Aiguo nodded, and then said.

"Ugh!" When Liu Hai heard this, he knew what kind of calculations those guys in the West were playing, didn't he just want to see the data of our twin-engine turboprop transport aircraft?

"What's in mind from the higher-ups?" Bangs asked.

"The higher authorities want to hear your thoughts." Sun Aiguo couldn't say anything, and the higher-level departments couldn't make up their minds.

The higher department does not make decisions by one person, but many people make decisions, and everyone has their own opinions.

Some people think that they can take the airworthiness certificate and flight permit of the West, and then they can sell this kind of aircraft all over the world.

There are also people who think that this is the most advanced transport aircraft in our country, so it is inappropriate to open it to others.

"Personally, I think we can get an airworthiness certificate and a flight permit, and our big plane may come out at the end of next year." Bangs: This is to give Sun Aiguo a heartbeat.

"And handing over the Y-8 to the West to issue a certificate of airworthiness can also muddy the waters, and I think Niuniu's new aircraft carrier must need carrier-based transport aircraft."

"Carrier-based transport aircraft are also needed for aircraft carriers after the Gallic chicken." Gallic Chicken has also recently announced its aircraft carrier manufacturing plan, and Liu Hai feels that the reason why Gallic Chicken is doing this is entirely because of Niu Niu next door.

I don't care if others have it, but I can't have it next door, I must have what I have next door, and I don't have what I have next door, doesn't this mean that I'm not as good as next door?

Although Lu Ji's parliament is also a little collapsed, but in terms of comparing with Niu Niu next door, the old men of the council will not fall behind, after all, face is earned by themselves, Niu Niu has two 80,000-ton aircraft carriers, are we not as good as each other? Can't you have it?

And after Liu Hai waits for this big plane to come out, see if there is a chance to cooperate with the Gallic chicken and add some strength to the Gallic chicken.

In fact, if you give a blood transfusion to Niu Niu and Gallic chickens, you can now contain the fat bear, and when the fat bear falls, you can contain the bald eagle, of course, the degree must be very good, don't let the bald eagle and the fat bear think that these two guys can threaten themselves.

In fact, the Gallic chicken at this time was at its peak, because the West African emperor at this time was the real emperor, unlike the street rat in West Africa when the bangs crossed.

(End of chapter)