Great Power Heavy Industry: Rise

Chapter 140 Wind Tunnel Test
Philosophy is a knowledge that makes people smart, and it is closely related to people's daily life and work. It is not something "tall" as Zhong Cheng thinks.

Philosophy includes two aspects, one is world outlook, and the other is methodology.

A worldview is people's basic views and opinions on the world.

After thorough research, the two questions of "who am I" and "where do I come from" can be explained.

From the broad classification, there are "idealism" and "materialism".

Methodology is the theory about the way people understand and transform the world.

It is the way and method people use to observe things and deal with problems, and it can explain the question of "where am I going".

"Dialectics" is the most famous idea in methodology.

In a nutshell, the world outlook mainly explains the "what" of the world, and the methodology mainly explains the "how to do it".

What kind of world view has what kind of methodology!

In fact, everyone has conscious or unconscious philosophical thoughts.

For example, an old lady who believes in Buddhism in an old valley, she still has her own views on the world and ways of dealing with it, but she is not aware of it.

But if you can research and think about your own philosophical thoughts, and consciously improve and perfect your own philosophical thoughts, it will be completely different.

That would turn an ignorant man into a wise man with "thinking".

But Zhong Cheng also knows that learning philosophy is also risky!
In the history of mankind, there have been too many philosophical thoughts and schools, which can be described as vast.

If you can't clearly identify it, you are likely to go into a misunderstanding.

But he is not a person who retreats in the face of difficulties.

He believes that he will be able to solve the problem of thinking, just like he overcomes the scientific and technological problems one by one.

Thinking of this, Zhong Cheng regained his energy and turned around to leave.

However, he found a person standing more than ten meters away behind him. Seeing him turn around, he was bowing to him.

It turned out to be Li Shaojie!

"Major Zhong, I'm sorry, we found you thinking about problems on the edge of the cliff in the middle of the night. If you don't worry, just come and follow. Didn't disturb you?"

"Hehe!" Zhong Cheng laughed, what was he thinking, am I that kind of person?
But this is also their kindness and responsibility.

"Thank you for your hard work. I'm fine. I just came to relax. Can I live in my house now?"

It was already 12 o'clock in the evening, and Zhong Cheng didn't want to go back to the R&D office to disturb others.

It's just that he hasn't been to his mountain villa for several months, what a waste!

"Your home will be cleaned every day, and you can move in anytime!" Li Shaojie replied bluntly.

"Well, I won't go down the mountain!"

……

The next day, Zhong Cheng was full of energy and went to work again.

His current job is to complete the design of the Suzaku fighter's shape in the Taixu experimental system of Fuxi No. [-].

Although it is determined to adopt the flying wing shape, the specific geometric dimensions of the flying wing shape still need to be studied, and it needs to be accurate to the millimeter level.

Finally, the main geometric parameters of the shape of the Suzaku fighter (preliminary sketches on three sides of the aircraft) and the dimensions of each part are designed, and the outline design drawings of the Suzaku fighter are given.

Among them, the aerodynamic layout of the Suzaku fighter, the preliminary layout of the internal loading, the preliminary layout of the key stress-bearing structures, the estimation of the RCS value of the radar scattering and the preliminary estimation of the center of gravity of the aircraft weight must be considered.

This work is extremely complicated. It originally required a large number of R&D personnel to complete it together, and the R&D cycle is also calculated in years.

This is also one of the reasons why the Jingwei UAV adopted the shape of a flying saucer: simplicity.

It's different now, with the Taixu Experimental System, Zhong Cheng can handle it all by himself.

In the shape design of the aircraft, an important auxiliary method is needed, that is, the wind tunnel test.

The wind tunnel test is based on the principle of relativity of motion, fixing the model or object of the aircraft in an artificial environment on the ground, artificially creating airflow to simulate various complex flight states in the air, and obtaining test data.

Simply put, the wind tunnel is to artificially create a "sky" on the ground.

In academia, the wind tunnel laboratory is known as "the cradle of aircraft".

There is a saying that "what kind of wind tunnel can have what kind of aircraft, spacecraft, rockets, and missiles".

Regardless of the high cost, the wind tunnel laboratory has a fatal shortcoming.

That is, it is necessary to manufacture an airplane or an airplane model and put it in a wind tunnel for testing in order to accurately detect the problems in the shape design of the airplane.

Experiments are expensive, the conditions are difficult to control, and it is impossible to carry out in the initial stage of product development.

(PS: Automobile wind tunnel test can use 1:2 or 1:1 automobile mud model, the cost is relatively cheap.)
But Zhong Cheng has no such worries.

He can build a wind tunnel laboratory in the Taixu Experimental System, and start testing from the first step of designing the Suzaku fighter.

Let the system automatically optimize according to the approximate dimensions and performance requirements he input, reducing the design time by more than 90%.

Of course, when the system gives multiple optimization solutions, he still needs to make a choice.

It took a week for Zhong Cheng to use the relevant data of the wind tunnel laboratory in the "Daguo Heavy Industry System" to build a wind tunnel experiment model in the Taixu Experimental System.

However, the subsequent wind tunnel test of the Suzaku fighter was not ideal, and the test effect was far from what he imagined.

In fact, the wind tunnel is not a hole, but a large tunnel or pipeline, which is more consistent with the original meaning of his English name wind tuennl.

I don't know which gentleman translated it as wind tunnel at the beginning.

There is a giant fan blade in the wind tunnel, which can generate a strong airflow. The airflow passes through some grilles to reduce the generation of eddy currents before entering the test room.

The airflow is then passed through the aircraft or aircraft model placed in the test space to simulate the flight process.

The principle is very simple, and the construction of the model is also very simple, but it is very different from the real situation he encountered when manipulating Jingwei No. [-].

Those air turbulence, vortex, atmospheric convection, the increase and decrease of air pressure, as well as the situation encountered by the aircraft's acceleration and dive up and down cannot be reflected.

After the prototype of the fighter plane designed in this way is trial-produced, it needs to be corrected by real flying in the air for several years or even more than ten years.

Such costs are unimaginable.

This is also the reason why the cost of modern fighter jets is high. The quantity itself is limited, and the high design cost must be shared. It is no wonder that it is not expensive!

He tried to add several sets of fans and some equipment, but he still couldn't simulate the actual flight situation.

The reason is that there are too many factors to consider and it is too complicated.

He had to ask 9527 for advice.

9527 explained (outputting text on the screen) that the situation encountered by fighter jets is different from that of other materials and equipment manufacturing. The operating conditions of the latter two are controlled, and the working environment can be human-intervened.

For example, the production process can be carried out in a special workshop with constant temperature, vacuum, sealing and shockproof.

But fighter jets can't. The working environment of fighter jets is uncontrolled, and no one can intervene in the sky environment when the battle takes place.

If you want to simulate the real sky with wind tunnel tests, you must either have a lot of actual data to support it, or you can calculate it by the system itself, but I don't know how many years it will take.

However, there is no large amount of flight data in Fuxi-[-].

Zhong Cheng slapped his head, the flight data Fuxi No. [-] does not have, but he has it!

(End of this chapter)