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

Chapter 31 Part Tolerance Issues of the Su-27 Fighter (Please follow up)
In the past, the Su-27 was comparable to the third-generation fighter jets of Yingjiang. Until the emergence of fourth-generation fighters, Yingjiang almost completely won.

This time, the Su-27 was transformed into three and a half generations.

It laid the foundation for the subsequent development of fourth-generation fighters.

By the way, the core structural technology of the Su-27 was also obtained through analysis.

Li Youchen was at his desk and looked at the photo of the Su-27 in his hand...

At the same time, an airline company and a manufacturing plant of military equipment.

meeting room.

The heads of several manufacturing groups walked into the upcoming temporary meeting one after another.

Because half an hour ago, in the manufacturing plant, several team leaders responsible for the equipment manufacturing group received a notice from the chairman to hold an impromptu meeting in the conference room.

It is an urgent matter, so we must gather in the conference room within half an hour.

Soon, the airline CEO, Director Liu, led his secretary into the conference room. He looked at several leaders of the manufacturing team, gave a few simple and implicit greetings, sat down at the conference table, and then started the meeting.

"I have received several orders from the military. Because the manufacturing requirements are somewhat special, I have convened this temporary meeting to ask you if I can provide this kind of steel and manufacture related parts."

Director Liu handed the technical drawings to his secretary and distributed them to the three team leaders.

Several team leaders looked at each other one after another, and all of them showed complex and changeable expressions such as incredulity, disbelief, extreme shock, etc.

"Director Liu, where did you get the titanium alloy smelting technology?"

"That's right. The same goes for the construction drawings of fourth-generation fighters. Why does Director Liu have them?"

When asked one after another, several team leaders were at a loss.

Why is there titanium alloy smelting technology?And the core structural drawings of fourth-generation fighters?
"The upper level of the military gave us part of it, requiring our company's manufacturing plant to make all the parts required for the order using titanium alloy steel, in line with the standards for assembling the Su-27." Director Liu's expression was solemn, as if he was slow, and he calmed down. After a while, he said:

"How? Can you do it?"

The team leaders did not answer immediately, but whispered to each other to discuss it.

"It's possible, but if you want to match the Su-27's parts preparation, you need the Su-27's technical drawings, and you need to make comparisons to adjust the standard production."

"Exactly, if the tolerance is slightly larger, it will not meet the standard."

After discussion, several team leaders decided to use the technical drawings of the fourth-generation fighter aircraft to make them into accessories, and also use the technology of the Su-27 third-generation fighter aircraft as assistance to adjust the tolerances of the parts according to the actual situation.

"Su-27, I almost forgot, Su-27 is a retired fighter jet sold to us by Mao Xiong."

"We don't have technical drawings in this area."

Director Liu was in trouble, and he really didn't expect it.

To modify the Su-27, it is necessary to make corresponding adjustments based on the original technology, disassemble it, and then use some parts of the fourth-generation fighter for installation, so that the modification of the third-and-a-half-generation fighter can be achieved.

There are currently no core structural drawings of the Su-27, so it is impossible to start the transformation at this moment.

After all, the aiming methods of the Su-27 third-generation aircraft have different standards from those of the fourth-generation aircraft.

The difference lies in tolerance.

"Don't be too busy to continue the discussion. I'll inform the higher-ups of the military about this issue."

As soon as he finished speaking, Director Liu temporarily left the conference room and went to make a call to Mr. Yue.

Outside the conference room, Director Liu called Mr. Yue and explained the situation:
"This is the situation. Without the reference of the Su-27 core structural technology, it is very difficult to forge parts for the fourth-generation fighter."

Mr. Yue: "Let's put this matter aside for now. Let me ask that young man how he would face this problem."

Director Liu is full of questions? ? ?

what's the situation?Young man?Is the core construction technology of the fourth-generation fighter designed by a young man?

-

Military area, Li Youchen's temporary dormitory.After taking a shower, Li Youchen walked out of the bathroom feeling refreshed. He put on clean clothes and looked in front of the mirror, which showed his camouflage-like military uniform, making him look presentable.

I had not come to the military area temporarily before and had not brought a clean change of clothes, so Mr. Yue arranged to give him a set of military uniforms, which were regular training uniforms.

Li Youchen put on his peaked cap with a five-pointed star, turned around and prepared to go out. As soon as he left his dormitory, he met Mr. Yue and many people serving in the army in the corridor.

Mr. Yue, who was sitting in a wheelchair, could not stand freely because of his lameness. He could only watch him quietly as he walked out of the dormitory door.

"Mr. Yue, you didn't come here just because of the Su-27, right?"

Li Youchen thought and guessed.

"You guessed it right. Regarding the Su-27 fighter jet, if you want to complete the overall modification, there is a lack of relevant Su-27 core structural drawings for reference."

"You are the designer of fourth-generation fighter jets. Is there any way to solve this problem?"

"There is also the most critical tolerance issue, which also needs to be resolved urgently!"

Because they couldn't solve it effectively, Yue Laogu came to him to find a solution.

"The problem of tolerance in standards can be easily solved here with this method."

Li Youchen guessed that it was a matter of parts tolerance, so he had a way to solve it.

"Really! What is it?" Mr. Yue asked eagerly.

"If you want to know, you can!"

Li Youchen waved his hand and said with a smile:

"During my stay in the military area, how about Mr. Yue covering the food expenses for me?"

Mr. Yue was stunned, and the others were also shocked.

"Are you kidding me? Mr. Yue is from the military area..."

The soldier was furious and wanted to stand up for Mr. Yue, but before he could finish his words, he was stopped by Mr. Yue!
"Don't get excited. Packing a meal is not a big deal."

"Young man, I agree to your request. I will take care of your meals during your stay in the military zone. You won't have to pay anything for the meals during this period."

Mr. Yue promised him that he would pay for his meals. There was nothing wrong with this condition.

"Thank you, Mr. Yue, for being willing to tolerate my unreasonable behavior."

Li Youchen thanked him first and then treated him respectfully.

"Then what is the solution?"

Mr. Yue returned to the topic and asked.

"It's very simple. I'll give you the answer in two days. I'll wait for another two days or so."

Li Youchen immediately walked away and went to eat first.

The progress of analyzing the core technology of the Su-27 is already beginning.

Just wait a couple of days and the results will be there.

Mr. Yue watched him go away and murmured seriously:
"In two days, it turned out that the Su-27 would encounter modification problems, so I knew..."

Even if you say yes, if you say no...it won't.

In fact, when Li Youchen saw Mr. Yue and others coming, he just thought about it for a moment and knew that they came specifically for the modification of Su-27.

Tolerance issues are also within the scope of Li Youchen's many considerations when it comes to modifying the Su-27;

Therefore, analyze the Su-27 fighter jet and strive to get the core technical drawings within two days...

(End of this chapter)