Technical analysis, seeking to revitalize China’s science and technology

Chapter 36 Making the Fourth Generation Model Fighter
Baihong Manor.

After the waterjet cutting machine was sent to the manufacturer, Li Youchen quickly started manufacturing the model machine.First, a reduced version of the turbofan engine was built, which was processed using titanium alloy steel, and related parts such as blades and casings were manufactured one after another.

The parts tolerances meet the standards, and the assembled parts begin to be assembled.

It didn't last long. Within half an hour, the small turbofan engine was officially assembled.

Compared with large turbofan engines, simple and small turbofan engines are very simple to build, and the principle is easier than large turbofan engines.

The hose is connected to the oil filling port of the small turbofan engine.

The power supply was connected along with the wire. Li Youchen moved the box containing kerosene, inserted the hose, and started the operation of the turbofan engine.

After fixing the small turbofan engine, turning on the power, using the regulator, adjusting it to number one, the small turbofan engine gradually began to make a slight wind sound.

Turning to number two, the wind gradually became louder.

Turn to number three, and the sound of wind is like air currents, whizzing by.

Turn to number four, and light blue flames spurt out from the tail of the turbofan engine.

Crank up to number five and boom!A large amount of explosive flames are released from the nozzle!

Li Youchen, who was standing in the distance, covered his ears and looked at the turbofan engine on the high platform, thinking that he had succeeded!It has a Mach [-] speed that can exceed the speed of sound.

As expected, the small turbofan engine copied from the performance of the fourth-generation turbofan engine can easily achieve a Mach [-] breakthrough in the speed of sound.

Turning off the regulator, the wind noise caused by the turbofan engine gradually stopped.

Li Youchen used the panel function of his left eye to scan the temperature of the turbofan engine:

"It has only been running for a few minutes, and the temperature is actually close to [-]. The temperature can be raised too easily."

It is inevitable to think carefully about the high temperature resistance of titanium alloy.

I'm really afraid that titanium alloy steel is not durable enough.

But there’s no need to worry, let’s think carefully about what to do with the remaining model machines, right?

If you want a model airplane that can take off, some techniques are essential.

Avionics equipment, remote control operation in the form of fly-by-wire flight control.

The fuselage is mainly made of high-fiber material, and some parts are made.

The fuselage, wings, tail, landing gear, etc. are all indispensable.

Apart from gum, Li Youchen couldn't think of any other high-fiber material.

In the future, materials related to model aircraft will mostly be related to materials such as rubber.If you want a model fighter jet, the quality must be high, and the need for rubber is inevitable.The key... The development of the drone industry has not yet emerged in the 90s. Even the most famous drone manufacturing company, DJI, only emerged and developed in the [-]s.

Gum material, domestic, maybe... not available.

It seems that it is better to go outside and see where the rubber materials are produced?
If available, buy it.

If not, you can only figure out how to get it by yourself?

-

Thinking about the production of model airplanes, gum is also needed;
Li Youchen couldn't help but think of a 3D printer that specializes in printing various rubber parts...

3D printer, as the name suggests, 3D printing.

Gum is a liquefiable thermoplastic. The hot gum liquid is extruded through a 3D printer, and the parts are printed like thin lines like drawings.

The cooling time during the process is very fast, ranging from ten seconds to one minute.

It doesn't take long to harden.

"Sure enough... none." Li Youchen looked around the shops, looking for gum materials, and it turned out that it was difficult to find. None of the shops had materials similar to gum.

When he walked to the roadside, a mirror in the shop reflected his appearance in his early twenties. Suddenly he remembered something and took out his functional phone!

"So that's it, hot glue materials are everywhere."

Suddenly, Li Youchen realized that rubber materials are everywhere in life.

Functional machine casings, washing machines, etc. are all made of rubber materials. Some supplies in daily life are made of rubber materials. However, after being heated, they soften and deform. Otherwise, we would not know.

Since it is available everywhere, rubber materials were used in daily necessities in the past.

Then...

Find the manufacturer and you may be able to get the rubber material you want.

Home appliance factory.

Leaving the commercial street full of shops, Li Youchen followed a route and went...

In a store selling electrical appliances.

"Haier store, forget, at this time Haier has begun to focus on the manufacturing of home appliances. In the manufacturing of home appliances, they should be familiar with non-flammable rubber materials, which are used as some shells."

Looking up at the name of the store, Li Youchen murmured to himself in thought, then turned and left, heading to the destination of the factory where Haier manufactures home appliances.

Half an hour later, Haier Home Appliances Manufacturing Factory.

Li Youchen met with the person in charge of the manufacturing plant and sat down in the office to discuss.Is it possible to buy gum material?It depends on the outcome of this negotiation.

"If you want gum material, this is no problem."

"Speaking of which, young man, how much do you need? Do you want us to make what you need for you?"

The person in charge waved his hand and asked.

"It doesn't take much, it weighs about thirty kilograms. As for the manufacturing, I won't bother you. If it can be sold, I will give you the market price."

Li Youchen didn't need them to make it, because it involved the production of model mechanisms for fourth-generation fighter jets and they were not allowed to have access to it. It was better to make it himself.

"Okay! The rubber material will be moved out from the warehouse according to the weight. After paying the fee, you can have the factory driver deliver the rubber material to you."

The person in charge will ask the driver to deliver the rubber material.

"Thank you."

Li Youchen shook hands with the person in charge and thanked him.

"You're welcome." The person in charge smiled.

The rubber material is ready and sent to Baihong Manor.

In order not to waste time, Li Youchen immediately started making the model machine.

The hot glue material is heated to soften the material, and the shape is changed through the container to form the vertical shape of the fuselage shell of the fourth-generation fighter jet. It will take several days to complete the production of the wings, tail, landing gear, fuselage and other parts. Assembly began on the fourth day.

The wings are assembled on the left and right sides of the fuselage, the tail is installed at the tail of the fuselage, and the landing gear is installed at the bottom of the fuselage. The twin turbofan engines are installed into the tail of the model and fixed one after another. A proposed fourth-generation fighter model is officially completed. .

Stretching, Li Youchen took a few steps back and stared at this model of a fourth-generation fighter jet that, although not very refined, was still presentable.Regarding the straight streamlined design, the appearance of the model fighter plane he designed has no wind resistance, which is something that many mature fighters have.

Especially at the bottom of the model machine, the air inlet is designed in an abdominal type. In order to release greater thrust, this air inlet design is adopted to accommodate more air into the turbofan engine.

The model machine has been built, but the most critical equipment is still missing:
Avionics technology for the operations of wings, tail, landing gear, and turbofan engines.

The remote control is indispensable, and the next step is the production of avionics equipment.

(End of this chapter)