Chapter 260 The mysterious grand prize is actually a J-10s fighter jet?
But Zhan Jifeng is only handsome for three seconds.
Because when his eyes touched Jiang Chen, he was shocked to find that Jiang Chen had already raised his hands above his head.
And his expression was slightly impatient.
Zhan Jifeng was both happy and helpless.
Fortunately, this question did not stump this kid.
Unfortunately, such a difficult question did not stump this kid.
This time.
Others present were still thinking hard about the correct answer.
But their efforts are destined to be in vain.
After all, they don't even know what the speed pressing unit is.
Fu Shiyu does know what 'speed pressure' is, but she really doesn't know what the maximum speed pressure of the J-10 is.
Obviously this question touches on her knowledge blind spot.
Zhan Jifeng looked around.
No one else raised their hands.
Then he looked at Jiang Chen again and said, "Boy, since no one else raised their hands, it's up to you to answer. Tell me, what is the maximum allowable speed pressure index of the J-10B Raptor fighter? "
Jiang Chen said without thinking, "9400kg/㎡"
A look of satisfaction appeared on Zhan Jifeng's face.
He gave Jiang Chen a thumbs up, "It's amazing that you actually know the correct answer to such a difficult question."
"But to prove that you are not just lucky, you are blind. Guess, 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 precise definition of speed pressure is a bit boring and difficult to understand. You can understand that speed pressure is the pressure that the air in turn exerts on the aircraft when the aircraft is pushing away the air. ”
“Speed pressure = 0.5x air density The speed pressure 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 that of the typhoon's central eye pressure! ”
"The maximum allowable speed pressure indicator is the absolute bottom line for any aircraft structure in use. Pilots must not exceed it under any circumstances, otherwise it will inevitably cause damage to the aircraft structure and cause mid-air disintegration."
"In fact, During flights close to maximum speed pressure, it is very common for fighter aircraft to have skin tears on their outer surfaces, rivets falling off, and internal equipment mounting brackets deforming.” Excessive weight causes insufficient structural strength, and accidents of structural damage and disintegration frequently occur during high-speed test flights close to the maximum design speed pressure. "
"For improving the maximum speed performance of the aircraft, the speed pressure index has been greatly improved. The benefits it can bring are relatively small - because the speed is proportional to the square root of the speed pressure. "
"Compared with the 7500kg/㎡ of the J-7 and J-8 series, the J-10 speed pressure index reaches 7500kg/㎡. The mainstream standard for fourth-generation fighter jets is 9,400kg/㎡, an increase of more than 21%."
Jiang Chen finished speaking in one breath.
Then he looked at Zhan Jifeng and asked seriously, "Chief, do you need me to continue?"
Zhan Jifeng then closed his slightly open mouth.
He quickly waved his hands and said, "No, no, no, that's enough, that's enough."
The others looked at Jiang Chen as if they were looking at a monster.
This guy.
How come he knows everything?
"Liu Xiyuan is right, you are really a genius, but I am very curious, no matter how genius you are, you cannot have such a rich reserve of theoretical knowledge. How come you know such unpopular knowledge?"
Jiang Chen scratched his head, then smiled and said, "My brain is stupid, so I read more books. The more I read, the more I understand."
This is the truth.
In his two lifetimes, he has indeed read a lot of books on aerospace.
only.
Others looked at him a little unfriendly.
You are too modest.
If you are stupid, then who are we?
Idiot?
“Humility can indeed make people progress, but excessive modesty is hypocrisy.” Zhan Jifeng said with a smile.
When he saw Jiang Chen, he wanted to speak again.
Raised his hand. He stopped and said, "Okay, we have come to an end in this aviation knowledge answering competition. Jiang Chen is higher than the others in terms of the number of answers and accuracy, so he is a well-deserved champion. There should be no objections from everyone. Give me your opinion."
Zhan Jifeng saw that everyone was silent and then said, "Since I don't have any opinions, I declare that Jiang Chen is the champion of today's aviation knowledge answering competition. ”
Finished.
He actually took the lead in applauding.
Not to be outdone, Fu Shiyu immediately applauded.
The others then reacted.
For a while.
There was a burst of uneven applause in the empty tarmac.
Jiang Chen blinked.
Is this it?
Where is the promised mysterious prize?
Where did you go?
Got the dog?
When the applause gradually died down, Jiang Chen hurriedly said, "Chief, have you forgotten something?"
Zhan Jifeng asked, "Forgot something? No. Ah. Your schedule today is just to watch performances, listen to war history, and touch fighter planes. Now that the schedule is all arranged, is there anything else I missed? "
"Where's the grand prize? Where's the mysterious grand prize?" Jiang Chen quickly reminded.
Zhan Jifeng suddenly realized, "Oh, you said this, I almost forgot."
"There is a grand prize, there is a mysterious grand prize."
Finished.
He picked up a walkie-talkie, turned to look at a permanent hangar, and said, "Come out."
Seeing this, other people also turned to look at this permanent hangar. passed.
I saw a tractor-trailer.
Slowly drove out of this permanent hangar.
Before they could react.
I saw that behind this tractor, it was towing a silver-gray J-10 fighter jet.
But this J-10 fighter looks a little weird.
It turned out to be a single engine and two seats.
However.
That's not the point.
The point is.
Is this the mysterious grand prize Zhan Jifeng said?
Wait!
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 wasn't until the tractor dragged the J-10s fighter to the apron that Jiang Chen pointed at the aircraft and said blankly, "Brother, are you kidding me? The mysterious prize you mentioned is this. ?”
Zhan Jifeng saw everyone’s dumbfounded expressions.
You know they misunderstood.
However, he did not explain clearly immediately.
But he smiled and asked, "Yes, is my grand prize big enough and mysterious enough?"
"Gulu."
Jiang Chen swallowed. Swallow.
He looked away from the fuselage of the plane with difficulty, "No, don't be joking. This grand prize is indeed generous, but I really can't bear it for the time being."
Zhan Jifeng then laughed. He said, "Hahaha, you are quite self-aware."
"The mysterious prize is of course not this J-10s fighter, but it is also related to this fighter."
(End of this chapter)