Chapter 9 Lecture

Author: September Jiang

Chapter 9 Lecture

"Hey, Chen Nian, don't mind your previous attitude. I'm also doing it for work! You know, the situation is not good now, there are too many bad guys."

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

"My name is Lei Gang, I am an engineer from Institute 601. I can also be considered old Aerospace. Just call me Lao Lei!"

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

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

What makes screws or the like is just an excuse to deliberately hit him.

What screws are needed for wind tunnel experiments? Just put a shell out and blow it!

But he didn't blame the other party at all, because this era was not like the 21920s he was familiar with.

What are the best blessings on the Internet at this time?

America in the next life.

What is the most eager expectation?

Another year has been spent in the Nanwang King's Army.

What is the most vicious insult?

50 cents.

In this environment, there is no problem with being cautious.

But thinking of this, Chen Nian's thoughts couldn't help but float away a little.

He thought that many children born after 00 years do not remember this era because the environment they were in had actually improved a lot.

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

Maybe this is a fragile pride?

If you want to make this pride firm, either break it and reorganize it, or try your best to add bricks and tiles to it.

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

Thinking of this, Chen Nian withdrew his thoughts and replied to Lei Gang with a smile:

"Leigong, it's okay, I can understand."

"That's good, that's good, by the way, we can basically understand this adsorption device, and there must be no other problem. So, can you tell us about the other parts now?"

"Of course it's OK."

Hearing Chen Nian's answer, many experts present sat back on their seats.

At this moment, they seemed to be back in their student days.

No one showed embarrassment about this - they are all extremely pragmatic experts, knowing that there is a truth that three people must have.

“Where to start?”

Chen Nian sat upright on the chair and asked.

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

Chen Nian nodded, thought for a moment and said:

"Overall, the front fuselage section of the F-22 is an unstandard diamond, the middle fuselage section is pentagonal, and gradually transitions to the flat rectangular section of the rear fuselage."

"Looking from the front, the lower part of the fuselage is an inclined surface that is about 35 degrees inward. There is a ridge from the apex of the head to the front edge of the air intake. This ridge-shaped precursor can avoid the main direction of radar wave threat."

"The F-22 also uses the edge wing vortex lift technology that is also found in the third generation aircraft. The narrow edge strip from the air inlet to the wing root and the ridge line of the front fuselage form a side strip extending from the apex of the head to the wing root. The front fuselage and the air intake merge into one, and also become a lift body, increasing the working area of ​​the edge strip, assisting in increasing the lift of the main wing surface at a small angle of attack, and vortex currents are generated at a large angle of attack, thereby obtaining stronger vortex lift."

Chen Nianwei told the story, not only simply describing the shape, but also interspersed with an interpretation of the design principles.

All the experts present were fascinated by the fact that these things were not very profound to be honest, because Chen Nian did not interpret the specific principles and data.

However, even such an introduction is presented with extremely clear logic, which undoubtedly proves one thing:

He is extremely familiar with this plane.

Familiar with it, he can express most of his design intentions in words based on his memory.

However, calculation is still a key issue.

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

"How did you make assumptions about the calculation of wing surface eddy current?"

"I calculated the reverse thrust by eddy current-induced resistance. The F-22 is quite special. Its wing design reduces the wingtip eddy current, but the upper surface eddy current becomes more complex. To calculate this problem, we have to comprehensively consider the aspect ratio, eddy current induced resistance, lift and wingtip eddy current intensity."

"For this reason, I found a relatively accurate photo, measured the aspect ratio and area of ​​the F-22, assumed a CI value, inferred CDi, and then gradually adjusted, and obtained basically logical data."

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

Lei Gang asked in confusion.

"It's impossible to verify, why would you say you'd have to make it?"

".Yes, then what is your standard for judging whether it is correct?"

"beautiful."

"beautiful?"

"Yes, a weapon, if it is 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. Maybe, I have a unique intuition about this aesthetic."

Revelation!

Everyone present was shocked by Chen Nian's speech.

They have heard this for the first time.

If a weapon is powerful, it must be beautiful.

It seems absurd, but think about it carefully

Which powerful weapon is not beautiful?

Are the white swans beautiful? Are the F-22 beautiful? Are the Roosevelt beautiful? Are the erected intercontinental missiles beautiful?

Not only beautiful, but even so beautiful that it is shocking.

Of course, many people cannot experience this beauty, but what they can experience must be that they have talented intuition.

For a moment, the same thought arose in everyone's mind:

This Chen Nian belongs to me! You must not let others take it away!

And just opposite them, Chen Nian looked at the shocked people and felt a little funny.

He remembered that the concept that weapons are beauty was developed and promoted by the man who was called the strongest strategic weapon. It seemed that after that, China's weapons and equipment did indeed look better.

Now that I have copied his views in advance to explain it to myself, it may be considered to be helping these engineering men improve their aesthetics in advance.

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

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

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

"This question is not so easy to explain. I'll just pick the adsorption device you have in your hands to talk about."

"For other specific designs, please give me some time. I need to sort out my ideas and take them out of my mind step by step."

(End of this chapter)
Chapter completed!