Spark

Hey, Chen Nian, don't mind my previous attitude, I'm here for work too! You know, the current situation is not good, there are too many bad guys.

By the way, look at me, I forgot to introduce myself.

My name is Lei Gang. I'm an engineer from Institute 601. I can be considered an old Aerospace. Just call me Lao Lei!

After basically confirming the authenticity of the component diagram, the tone of the man who questioned Chen Nian first also changed drastically.

Of course, his original tone was faked, and Chen Nian guessed it from the very beginning.

Making screws and the like is just an excuse to beat him on purpose.

What screws are needed for wind tunnel experiments? Get out a shell and blow it up and you're done!

But he didn't blame the other party at all, because this era was not like the 2120s he was familiar with.

What is the best blessing on the Internet at this time?

America in the next life.

What is your deepest hope?

Another year of Wang Shi Nan Wang.

What is the worst insult?

Fifty cents.

In this environment, there is nothing wrong with being cautious.

But thinking of this, Chen Nian couldn't help but drift away.

He thought that many children born after 2000 don't remember this era, because their environment has actually changed a lot for the better.

They have not really experienced and deeply experienced the years of struggle, and they have not experienced the reason why the overall atmosphere of a country can be improved.

Maybe it's a fragile pride?

If you want to strengthen this pride, you must either smash it and rebuild it, or add bricks to it.

There is no doubt that I have to choose the latter.

Thinking of this, Chen Nian withdrew his thoughts, smiled and replied to Lei Gang:

Lei Gong, it's okay, I can understand.

That's good, that's good. By the way, we can basically understand this adsorption device. There must be no other problems. Then, can you give us a general introduction to the other parts now?

No problem at all.

Hearing Chen Nian's answer, all the experts present sat back in their seats.

At this moment, they seem to have returned to their school days.

No one was embarrassed by this—they were all down-to-earth experts who knew that threesomes must have their mentors.

Where do we start?

Chen Nian sat on the chair solemnly and asked.

Let's talk about the overall configuration of the fuselage first!

Chen Nian nodded, thought for a moment and said:

Generally speaking, the front fuselage section of the F-22 is a non-standard rhombus, the middle fuselage section is pentagonal, and gradually transitions to the flat rectangular section of the rear fuselage.

Looking at it from the front, the lower part of the fuselage is an inward slope of about 35 degrees. There is a ridge from the top of the nose to the leading edge of the air intake. This ridge-shaped front can avoid the main direction of radar wave threats.

The F-22 also adopts the side strip wing vortex lift technology that is also available in the third-generation aircraft. The narrow side strip from the air inlet to the wing root and the ridge line of the front fuselage form a side strip extending from the top of the nose to the wing root. The front fuselage and the air inlet are integrated to form a lifting body, which increases the area of ​​action of the side strips, assists in increasing the lift of the main airfoil at small angles of attack, and generates vortices at high angles of attack, thereby obtaining stronger force. Vortex lift.

Chen Nian eloquently described not only the shape, but also interspersed with the interpretation of the design principles.

All the experts present were fascinated by what they heard. To be honest, these things are not very advanced, because Chen Nian did not interpret the specific principles and data.

However, even if it is just such a generalization, it also presents a very clear logic, which undoubtedly proves one point:

He is very familiar with this plane.

Realized that he can express most of the design intentions in words by relying on his memory.

Computation, however, remains the key issue.

So, when Chen Nian stopped to drink water, Lei Gang asked:

How do you make assumptions for the calculation of airfoil vortices?

I calculated reverse thrust based on vortex-induced drag. The F-22 is special. Its wing design reduces wingtip vortex, but the vortex on the upper surface becomes more complicated. To calculate this problem, it is necessary to consider comprehensively. Chord ratio, vortex-induced drag, lift and wingtip vortex strength.

For this reason, I found relatively accurate photos, measured the aspect ratio and area of ​​the F-22, assumed a CI value, deduced the CDi, and then gradually adjusted it to obtain basically logical data.

It's that simple? No, it's not simple, but how do you verify it?

Lei Gang asked suspiciously.

It can't be verified, how can I make it?

.That's right, so what's your criterion for judging whether it's correct?

beautiful.

beautiful?

Yes, a weapon, if it is to be powerful and accurate, it must first be beautiful.

It must conform to all human aesthetics for weapons. It must have smooth curves, sharp edges, and just the right proportions. It's hard for me to explain it. Maybe, I have a unique intuition for this aesthetic.

Enlightenment!

Everyone present was shocked by Chen Nian's speech.

It was the first time they had heard this statement.

If a weapon is powerful, it must be beautiful.

It seems absurd, but think about it carefully

What powerful weapon is not beautiful? ?

Is the white swan beautiful? Is the F-22 beautiful? Is the Roosevelt beautiful? Are intercontinental missiles erected one by one beautiful?

Not only is it beautiful, it is even shockingly beautiful.

Of course, many people can't appreciate this kind of beauty, but what they can experience must be their innate intuition.

For a moment, the same thought came to everyone's mind:

This Chen Nian belongs to me! Never let others take it away!

And just across from them, Chen Nian couldn't help but feel a little funny when he looked at the shocked crowd.

He remembered that the concept that weapons are beautiful was put forward by the man who was called the strongest strategic weapon. It seemed that after that, China's weapons and equipment had indeed become more beautiful.

Now I plagiarized his point of view in advance to explain for myself, maybe it can be regarded as helping these engineering men improve their aesthetics in advance.

I understand. Thinking by intuition is indeed a very feasible method in research, but verification must still be verified.

Let's talk about the specific parts, we have to make this thing quickly!

Seeing Lei Gang's impatient expression, Chen Nian smiled and replied:

It's not so easy to explain this question clearly. I'll just pick the adsorption device that you have a picture in your hand and talk about it.

For other specific designs, please give me a little more time. I'm going to sort out my thoughts and take it out of my mind step by step.