"It turns out that heroes have been young since ancient times!" Hearing Liu Yijiu's introduction, the old technician who stopped working and applauded.

"Don't worry, we all know these theories. Everyone can do something practical when talking. Xiao Liu, if you can propose a more consistent dynamic design, it will be fine if I, Lao Qin, even if I, Lao Qin, take you as my teacher!" Qin Yuan said without any unnatural.

He later entered the base. Liu Suzhi had a comprehensive knowledge. He had heard of it, but he had never been exposed to it. Even if Liu Yijiu, a young young man, started learning these aspects from the womb, he would be able to involve everything and be proficient in everything.

"Change the current four tail wings into four front and rear, with the four front wings at about one-third, and perform the first rectification of the air resistance in front of the rocket launcher body and the airflow; the rear wings at the rear are still four, forty-five degrees or arranged on the same axis..." Liu Yijiu proposed some design structures of rockets that he had common in later generations.

Although he doesn't know whether this structure is reliable or not, it is designed in this way in all countries, so it will definitely not be a problematic design. In terms of aerodynamics, it is obviously much better than the four-piece tail wing with a larger wingspan.

After hearing Liu Yijiu's introduction, Qin Yuan started to draw sketches on the blank drawings on the table. Although it was just a small design modification, this design was designed to the entire system.

It requires large-scale verification and calculation.

"This cannot be verified in a short time..." Wang Shunyi obviously knew this. He is the chief designer of the entire project and has some understanding of all aspects.

Liu Yijiu studied with Du Bin from the University of Aeronautics and Astronautics for a while, and Wang Shunyi also knew that Du Bin was not famous in China, but he was quite successful in aerodynamics, but he had never had the opportunity to show his talents since he returned from studying abroad.

Du Bin returned to China to contribute to the country's military industry because he was invited by Liu Suzhi. In the end, the country was in chaos before he even participated in the project design. The superior leader casually arranged him in the University of Aeronautics and Astronautics.

"If these special-shaped structural parts are more in line with aerodynamics, finite element analysis must be performed. Only through the calculation of infinite approximation of finite element can more accurate data be obtained..." Liu Yijiu proposed the finite element analysis at this time.

In the national defense and military industry system, finite element analysis must be a must.

When computers were popular, there were professional graphics processing software to carry out such calculations, but at this time, this aspect could only be performed manually.

But this calculation is a bit too large...

Liu Yijiu knew about it, but he didn't know how to start. The old technicians in front of him were all experts in this field. As long as they were asked, they would naturally find a way to solve this problem.

"What is finite element analysis?" Everyone was a little confused.

This is the first time they have heard this statement.

The concept of finite element was born and applied centuries ago, such as approximating a circle with polygons (finite linear units) to find the circumference of a circle.

As a method was proposed, it was the case after the large-scale use of computers in the 1980s. Wang Shunyi and others were not unaware of finite elements, but they should say that they did not know how to use them in this regard.

"This is a newly proposed calculation method for the strength of aerospace structures proposed by foreign countries. It is just a theory and has not been widely used. Although it is very simple to use, it must be achieved through a lot of complex calculations..." Liu Yijiu's answer made a group of old technicians who were listening to him explain what finite element analysis is and how to use rocket design to try to strangle him.

A typical silence is not!

"Comrade Liu, this is not the time to keep it in hiding, time is precious..." Wang Shunyi also said with a depressed look on his face.

"Okay. Finite element analysis is to use mathematical approximation to simulate real physical systems (geometric and load conditions). It also uses simple and interactive elements, namely units, to approximate the real system of infinite unknown quantities with a finite number of unknown quantities..." Liu Yijiu explained the finite element analysis theory he knew.

He is very skilled in using this, but it is all done by the intelligent brain, rather than his own manual calculations.

Not to mention anything else, even the design of an aircraft wing is an extremely large computing project.

Aircraft wings are seriously considered to be a flat thing to those who don’t know how to do things, but this is indeed derived from stretching a closed curve (it is composed of countless same curves, just like countless points forming a straight line, and the entire aircraft wings are regarded as a straight line, and the point that forms a straight line is the closed curve).

The more points you take on this curve, the closer the curve you finally get is to the designed curve.

There is no problem in design, but during the processing process, the more precise the points you take, the more aerodynamic the wings made will be, making the aircraft have better flight performance...

Liu Yijiu didn’t know anything else. He had heard that the curve on the wings of the first third-generation and a half-generation fighter jet independently developed by the Republic took a total of 80,000 points during the wind tunnel experiment. The designer could not make any mistakes in the process of inputting these points for modeling!

"Don't say it so profoundly, give an example!" Wang Shunyi was a little dizzy by Liu Yijiu's difficult-to-mouth professional terms.

They all have high IQs and have good grades in mathematics. After all, mathematics is the basic science of science and engineering.

But they have been away from school for decades.

"The simplest example is to use polygons to approximate the circle to find the circumference of the circle. Replace complex problems with simple ones. We need to use polygons to find the circumference of the circle. Naturally, the more naturally the polygon has, the more accurate the final result will be..." Liu Yijiu said helplessly.

If he asked him to give an example, he could only give such a simple one.

"I've said it earlier! So that's what it is..." After hearing Liu Yijiu's example, everyone suddenly realized.

Whether it is researching rocket launchers, rockets or missiles, or even fighter jets, this method is really useful.

You can use a straight line to approximate the curve infinitely, so that the most precise calculation results can be obtained.

At the same time, during the processing process, such processing is much more reliable than relying on the technical experience of the worker. At least, the processing quality can be guaranteed in this regard!

"I just saw this thing in a paper and didn't pay much attention to it. Now I want to find more detailed information, but I guess it won't work. I can only rely on the teachers to explore it myself..." Liu Yijiu felt something was wrong when he saw these old men staring at him with his eyes shining.

"I still have something to do, so I'll leave first..."

"Comrade Liu, don't leave, let's introduce us to the finite element analysis..." An old man wearing glasses grabbed Liu Yijiu.

These old technicians have a very strong desire for knowledge.

The Republic is supported by their generation!

"Dear teachers and uncles, I know so much..." Liu Yijiu felt uncomfortable being looked at by these old men's dissatisfied eyes.

If I had known this, I wouldn't have been like this.

Obviously, it's too much...

"Okay, let's explore these things by ourselves. Xiao Liu has learned a lot of things outside over the years, so we can take it slowly..." Wang Shunyi also knew that Liu Yijiu was like an ordinary young man. If he knew more, he would definitely vomit it out.

The more shocked these old guys, the higher his sense of accomplishment will be.

"It's better to be good. I've been playing outside for the past few years and have not learned anything..." Liu Yijiu took this opportunity and quickly waved his hand while walking outside...

Just kidding, if you are really entangled by these people, he still has to be sliced ​​and studied?

"Master, what's wrong with you?" Liu Yijiu panted and looked outside from time to time.

Can you tell me about such a thing?

There was once a saying that said, "Don't pretend to be B, pretend to be B and be struck by lightning!"

Now there is no lightning strikes Liu Yijiu, but there are a bunch of crazy old technicians who are like wolves and tigers to squeeze him...

The theory tells them that nothing is wrong. The key to the problem is that these old technicians are all very curious and they will not give up if they don’t understand. How can Liu Yijiu figure it out?

This is an era without intelligent brains, and even computers are still in their infancy.

When Liu Yijiu thought of computers, he suddenly felt that he had made a mistake at the beginning.

If you want to do a good job, you must first sharpen your tools. Without the assistance of a computer, he spends his time doing basic operations and drawing pictures all day long!

This is an extremely wasteful thing.

What's more, the US imperialists have just started in this era. He can completely save the Republic from a century of detours and occupy the commanding heights of technology from the very beginning!

"Come over with paper and pen!" Liu Yijiu did not answer Yang Shan's question, but shouted at him.
Chapter completed!