Chapter 260 The mysterious grand prize is actually a J-10s fighter jet?
However, Zhan Jifeng's leadership lasted only three seconds.

Because when his eyes fell on Jiang Chen, he was shocked to find that Jiang Chen had already raised his hands above his head.

And there was a hint of impatience on his expression.

Zhan Jifeng felt both relieved and helpless.

Fortunately, this question did not stump the boy.

Unfortunately, such a difficult question did not stump this kid.

At this moment.

Others present were still racking their brains for the correct answer.

But their efforts were doomed to fail.

After all, they don't even know what the unit of speed pressure is.

Fu Shiyu knew what "speed pressure" was, but she really didn't know what the maximum speed pressure of the J-10 was.

Obviously this question touched upon her blind spot in knowledge.

Zhan Jifeng looked around.

Still no one else raised their hand.

Then he looked at Jiang Chen again and said, "Boy, since no one else raised their hands, it's your turn to answer. Tell me, what is the maximum allowable speed pressure index of the J-10B Raptor fighter?"

Jiang Chen said without hesitation, "9400kg/㎡."

A look of satisfaction appeared on Zhan Jifeng's face.

He gave Jiang Chen a thumbs up and said, "It's such a difficult question, but you actually know the correct answer. That's amazing."

"But to prove that you are not just lucky and guessing blindly, why don't you explain to your classmates that the maximum speed pressure of the J-10 is 9400kg/㎡."

Jiang Chen pondered for a few seconds.

Then he said, "The exact definition of speed pressure is a bit boring and difficult to understand. You can think of it as speed pressure being the pressure exerted on the aircraft by the air when the aircraft pushes away the air during flight."

"Speed ​​pressure = 0.5 x air density x square of speed, which is proportional to air density and proportional to the square of speed."

"For example, the velocity pressure generated by typhoon winds is generally between 66-85kg/㎡, but modern jet fighters fly very smoothly at maximum speed, and the pressure they bear is dozens or even hundreds of times the pressure at the center of the typhoon!"

"The maximum permissible speed pressure index is the absolute bottom line of any aircraft structure in use. Pilots must never exceed it under any circumstances, otherwise it will inevitably lead to damage to the aircraft structure and cause mid-air disintegration."

"In fact, it is common for fighter jets to have their outer skin torn, rivets falling off, and internal equipment mounting brackets deformed during flights close to maximum speed and pressure."

"For example, the Su-27 had insufficient structural strength due to excessive weight reduction in its early days, and during high-speed test flights close to the maximum design speed and pressure, accidents of structural damage and disintegration occurred frequently."

"A large improvement in speed-pressure will yield relatively small gains in terms of improving the maximum speed performance of an aircraft - since speed is proportional to the square root of speed-pressure."

“相比于歼-7、歼8系列的7500kg/㎡，歼-10速压指标达到四代战斗机的主流标准9400kg/㎡，提升超过21%。”

Jiang Chen finished speaking in one breath.

Then he looked at Zhan Jifeng and asked seriously, "Commander, do you need me to continue?"

Zhan Jifeng then closed his slightly open mouth.

He quickly waved his hands and said, "No, no, no, enough, enough is enough."

Others looked at Jiang Chen as if he were a monster.

This kid.

How does he know everything?
"Liu Xiyuan is right. You are really a genius. But I am very curious. No matter how talented you are, you can't have such a rich theoretical knowledge. How come you even know such unpopular knowledge?"

Jiang Chen scratched his head and then smiled, "My brain is dull, so I read more books. The more I read, the more I understand."

This is the truth.

In his two lifetimes combined, he had indeed read quite a few books on aerospace.

only.

Others looked at him in a somewhat unfriendly manner.

You are too modest, boy.

If you are considered stupid, then what are we?
Idiot?
"Humility can indeed help people progress, but excessive humility is hypocrisy," Zhan Jifeng said with a smile.

He saw Jiang Chen was about to speak again.

He raised his hand and stopped her, "Okay, let's put an end to this aviation knowledge quiz for now. Jiang Chen is better than the others in terms of the number of answers and accuracy, so he is the well-deserved champion. I think everyone should have no objection."

Zhan Jifeng saw that no one was talking, so he said, "Since there are no objections, I declare that Jiang Chen is the champion of today's aviation knowledge quiz."

Done.

He actually took the lead in applauding.

Fu Shiyu was unwilling to be left behind and immediately started to applaud.

Only then did the others react.

For a while.

There was a burst of uneven applause in the empty tarmac.

Jiang Chen blinked.

Is this it?
Where is the mysterious grand prize?

Where have you been?
The dog is gone?
When the applause gradually died down, Jiang Chen couldn't wait to ask, "Commander, have you forgotten something?"

Zhan Jifeng said mischievously, "What did you forget? Nothing. Your schedule today is to watch performances, listen to war history, and touch fighter planes. Now that the schedule is complete, is there anything I missed?"

"Where's the grand prize, where's the mysterious grand prize?" Jiang Chen reminded quickly.

Zhan Jifeng suddenly realized, "Oh, you're talking about this, I almost forgot about it."

“There are big prizes and there are mystery prizes.”

Done.

He picked up a walkie-talkie, turned his head to look at a permanent hangar, and said, "Come out."

Seeing this, the others also turned their heads to look at the permanent hangar.

I saw a tractor truck.

Slowly drove out of this permanent hangar.

Before they could react.

I saw that behind the tractor, there was actually a silver-gray J-10 fighter jet being towed.

However, this J-10 fighter jet looks a bit strange.

It turned out to be a single-engine, two-seater.

but.

This is not the point.

The point is.
Is this the mysterious grand prize that Zhan Jifeng mentioned?

and many more!

The mysterious grand prize turned out to be a single-engine, two-seat J-10s fighter jet?
Not just other people.

Even Jiang Chen was stunned.

It was not until the tractor towed the J-10s fighter jet to the apron that Jiang Chen pointed at the plane and said, "Big Brother, you are kidding me, right? The mysterious grand prize you mentioned is this?"

Zhan Jifeng saw everyone’s dumbfounded expressions.

I knew they had misunderstood.

But he didn't explain it immediately.

Instead, he smiled and asked, "Yes, is my big prize big enough and mysterious enough?"

"Gulu."

Jiang Chen swallowed.

He looked away from the plane with difficulty, "Don't, don't joke, this big prize is indeed very generous, but I really can't enjoy it for the time being."

Zhan Jifeng then laughed out loud, "Hahaha, you are quite self-aware."

"The mysterious grand prize is certainly not this J-10s fighter, but it is also related to this fighter."

(End of this chapter)