Chapter 159: The jewel in the crown (2/13)

Why buy one get one free?
Because it needs to be replaced at any time!
However, even so, the Air Force Rabbit still quit. It will be exhausting.
The engine needs to be overhauled every 150 hours. How much ground support is required? How much mechanical equipment do you get? How much training time has to be wasted?
An air force brigade doesn’t have to do anything else, just repair the engine.
What does overhaul mean?
It is to disassemble all the engines and reassemble them.
Basically it is equivalent to re-assembly once. Then the life span is shortened by half. Only 75 hours. Then it was overhauled and the lifespan was cut in half...
The Air Force Rabbit is not a fool and resolutely refuses to accept it.
As a result, the Turbofan 6 was not actually mounted on the aircraft of the active army until its death.
After turbofan 6, Kunlun.
Kunlun engine also has many problems. High temperature, vibration, surge, fuel leakage, fire tongue, smoke...
After Kunlun, it was Taihang.
Part of the problem was not solved until Taihang.
Perhaps it has been partially resolved now?
After all, Taihang has already obtained new high-end raw materials. Should be able to deal with many problems.
In the final analysis, the problem is the raw materials.
At that time, if there were suitable raw materials, the turbofan 6 would definitely be qualified.
For new raw materials, it is not difficult to increase by 50 degrees. It can even be raised by 500 degrees.
At the beginning, the combustion temperature of the turbofan 6 was 1500 degrees. Even if it is raised by 500 degrees, it is about 2000 degrees. The maximum temperature of the American f-135 engine is only over 1700 degrees.
"If you can, you'd better make one as soon as possible." Cheng Kailong said impatiently.
"If you need it, you can do it right away." Wang Bu'an was full of energy.
Since it is despised by others, then fight back.
Say there is a problem with my character?
Said I am a rapist? Glib tongue? Going idle? Grass, I have your meal?
Okay, let's talk with products.
Send you a real turbofan 6 backhand, shocking you...
"Read the data."
"Copy data."
Wang Bu'an issued instructions. Robot Elf No. 1 gets busy immediately.
It needs to perform data measurement on all parts of the turbofan 6 engine, including the most core components, and transmit it to the industrial park at the same time.
The manipulator stretched out silently to decompose the remains of the turbofan 6.
Various machines started to start.
Some began to produce high-temperature corrosion-resistant alloys.
Some began to produce high-temperature ceramics.
Some began to produce aviation titanium alloys.
Various rubber seals are also in place one after another.
Gears big and small...
Large and small bearings...
After a while, the 50 billion-ton hydraulic press began to process turbine blades.
At the same time began forging the engine shell.
"This is..." Cheng Kailong was dumbfounded, "Fully automatic production!"
"Yes!" Wang Bu'an said without concealment, "to produce such a simple engine, the assembly line will do."
"This, this, this..." Cheng Kailong said incoherently in horror.
Oh my god! What kind of technology is this?
How do you feel more sci-fi than the scenes in sci-fi movies?
How did Wang Bu'an do it?
How did he master the technology? Came out overnight?
Wang Bu'an did not explain.
He did not explain on purpose.
He just wanted Cheng Kailong to see all this, and then he was puzzled.
Cheng Kailong saw it, which meant that others had also seen it.
But what if you see it?
I don't understand it when I see it!
How can I do it if I can’t even read it?
Besides his Wang Bu'an, who else can operate? Exclusive secret recipe, no secret...
"Can I take pictures?" Cheng Kailong said.
"Are you afraid of leaks?" Wang Bu'an said.
"I will pay attention."
"Then take it as much as you want."
"Thank you."
Cheng Kailong took out the video recorder.
He did not use a cell phone. Mobile phones are not safe. Only the original video recorder is safe.
He took pictures seriously.
Meticulous.
Concentrate.
He wants to record every detail.
This is very valuable research information. Maybe it will have a significant effect on other scientific researchers.
Five minutes passed...
Ten minutes passed...
Twenty minutes passed...
Thirty minutes passed...
The turbofan 6 engine gradually appeared contours.
But it is its basic embryonic form, which has gradually formed. It is exactly the same as the remains of Turbofan 6.
The installation of the outer duct is completed.
Ini-Dao began to install.
Followed by the three core components of the engine: high-pressure compressor, main combustion chamber, and high-pressure turbine.
Among them, the combustion chamber is the most complicated part.
It includes flame tube, fuel nozzle, dilution air hole, high-pressure air engine outlet guide vane, turbine guide vane, afterburner control system...
Among them, the most technically difficult ones are various turbine blades.
At first, someone attacked the turbine blades of the turbofan 6, which lasted only 22 hours, and then broke.
Although, after continuous improvement, there has been a certain degree of improvement. But still far, far away from the world's top level.
Cheng Kailong is also very concerned about the quality of various single crystal blades.
This small blade has too high technical content.
The jt9d engine of the American Emperor's Boeing 747 and 767 adopts pwal422 single crystal alloy and has a life of more than 9600 hours. The f-100 engine equipped with the f-15 fighter uses the first-generation directional solidification alloy blades. The performance of the second-generation single crystal alloy pwal484 and the third-generation re-nen6 in the United States far exceeds the level of the first generation. You can see Airbus and Boeing planes flying in the air day and night, with their engines working reliably. Some cfm-56 engines have reached 14,000 hours of life.
In contrast, the engine life of the polar bear is much shorter.
The interval between overhauls of al-31f was originally only 640 hours, but later it reached one hour after life extension. Although the positioning of fighter jet engines and civil turbofan engines is different, the gap in basic research can still be seen. The directional solidification single crystal blades that China can produce at present have a greater gap with the international level. We have more than 10 engines per engine.
As for the original MiG-21 (F-7), the overhaul time is 100 hours. This is definitely very poor. Frequent replacements will delay the deployment and combat of the aircraft. Of course, the current engine life has been improved, it must be more than 500 hours, but the gap is still very large.
Europe and the United States have very advanced technologies in this area. Many civil aviation aircraft require over 10,000 hours of overhaul.
Military aircraft, f-4 Phantom fighter jets of the same period as MiG-21, used j-79 engine, life span reached 4000 hours.
The life of the f-110 engine used in the f-15 can reach 6000-0 hours.
The newly installed f-136 engine life of the f-22 is more than 13,000 hours. This f-136 is still not for sale until now, and there is very little public information, which is very mysterious.
The U.S. emperor hyped the f-35 fighter jets all day long, and it was sold at high prices all over the world.
However, the f-22 absolutely refuses to take out. One can imagine which of these two fighters is more advanced.
"Why are there no holes in the blade?" Cheng Kailong asked suspiciously.
"No need." Wang Bu'an shook his head.
"Is it really unnecessary?"
"It's really not necessary."
Wang Bu'an answered in the affirmative. No need is no need.
The holes needed are ordinary single crystal blades. The holes can reduce weight on the one hand, and enhance heat dissipation on the other hand.
At present, the most advanced turbine blades not only have holes on the blades, but some are hollow. Its own weight is very light. But it requires a lot of pressure. At least the weight resistance should be above 600 tons. High temperature resistance also needs to be at least 600 degrees. One can imagine the difficulty of its manufacturing.
Moreover, there are various turbines of different sizes in the engine. Each turbine uses the same blades. However, the blades are completely different between different turbines. In other words, each blade requires a different mold. Not to mention technology, even the cost is very high.
Therefore, aero engines are called "the crown of machinery industry", and turbine blades are called "the jewel of the crown", no one can do it.
"Can I see it?" Cheng Kailong said cautiously.
"Let's see." Wang Bu'an controlled the manipulator and handed over a turbine blade.
Are turbine blades.
Not a single crystal blade.
Because no single crystal technology is used.
It is directly forged by a 50 billion ton hydraulic press, and the surface is smooth as a mirror.
In the hand, it feels heavy and very heavy. I feel that this small leaf is at least 1 kilogram. The fingers must be squeezed hard, or they will fall to the ground.
"Is such a heavy turbine blade really okay?" he asked worriedly.
"It's okay." Wang Bu'an said lightly.
What does weight matter?
As long as the quality is tough enough.
It is said that it is a copy of Turbofan 6, but in fact a major change has been made.
It uses more titanium alloys.
It uses more high-temperature ceramics.
It uses more composite materials such as polyimide and polyetheretherketone.
Flame retardants, adhesives, and liquid metals are also widely used. The overall weight of the engine is actually reduced a lot. Only the quality of the turbine blades has been improved.
The focus of technology in different eras is of course different.
"Single crystal blades have a lifespan of up to 20,000 hours. My blade has a lifespan of at least 200 million hours." Wang Bu'an said.
"Do you want to be so exaggerated..." Cheng Kailong couldn't help but be suspicious.
Wang Bu'an's data is too exaggerated.
200 million more hours?
Are you going to use the destruction of mankind?
No wonder people want to say bad things about you behind your back~EbookFREE.me~ is mainly too unstable.
If you say that the life of the blades I produced can reach more than 10,000 hours, it sounds much better.
Although 10,000 hours will be seriously questioned. But at least it is not as exaggerated as 100 million hours. If he reports truthfully, I'm afraid the leader will look at him with caring and mentally handicapped eyes. Wang Buyan is a lunatic, so are you Cheng Kailong? He said nonsense, your brain was so funny, you actually believed it?
However, Wang Bu'an did not explain.
Say nothing, let's see the effect.
There are many types of turbine blades, in addition to stator blades, rotor blades...
There are transmission shafts, transmission gears...
There is also a jet outlet...
Second more.