Chapter 258: A unique aviation knowledge quiz

More than half an hour later.

Zhan Jifeng finally arrived, having arrived late.

Jiang Chen saw that his hands were 'empty', and a trace of doubt suddenly appeared on his face.

Ok?
Didn’t they say there was a mysterious grand prize?

What about the mystery prize?
Missing?
However, others were very excited about Zhan Jifeng's arrival.

Because in the past half hour or so, they had already looked at the two J-10B fighter jets parked on the apron several times inside and out, and also went to the flight briefing room next to the apron to play cosplay for a while.

Even if he is a rookie who is interested in the J-10 Raptor.

Now all curiosity has been satisfied.

The reason why they are still patient and don't clamor to go back to school is that.

Aren’t you just thinking about the aviation knowledge quiz and the mysterious grand prize that Secretary Zhao mentioned?
Now the Chief of Staff is here.

The mystery grand prize will soon be revealed.

"Haha." Zhan Jifeng said with a smile before he even stepped onto the tarmac, "It's my fault. I was so busy that I forgot about other things. I kept everyone waiting for so long."

Sun Zhigao and Officer Zhao quickly came forward and tried to smooth things over, saying, "It's okay. We are the ones who are troubling the commander."

Zhan Jifeng nodded to the two of them.

Only then did he walk up to all the students.

He said loudly, "Director Zhao has already told you just now, in addition to listening to the war history and touching the fighter planes this afternoon, there is also a final event, which is the aviation knowledge quiz competition."

"But don't be nervous, this is just a little game I came up with on the spur of the moment."

"So this quiz contest won't have any strict requirements or rules. I'll ask the questions and you raise your hands to answer them."

"Whoever answers quickly and accurately will win a mysterious prize given exclusively by me."

"As for what the mysterious grand prize is, haha, you will know in a moment."

The more than 200 students present heard this.

There was an eager expression on their faces.

Zhan Jifeng saw this.

No more wasted saliva.

Instead, he stepped onto a ladder and looked down at everyone.

He said, "Then let's start with an appetizer. What is the maximum overload limit of the J-10 series fighter jets?"

It really is an appetizer.

He just finished asking.

Of the more than 200 students present, at least one-third immediately raised their hands at the same time.

really.

No one who can get into the Air Force University is a fool.

Although this group of students had only been in school for a short time, and what Zhan Jifeng asked was not at all about the teaching content of this semester.

But still at least one-third of the students knew the correct answer.

Zhan Jifeng looked around.

His gaze finally fixed on Fu Shiyu's face next to Jiang Chen.

Pointing at her, he said, "For the first question, I will choose among the dozen or so female students. Our male students should also show their style."

"Girl, you answer this question."

Fu Shiyu was overjoyed.

Without thinking, he immediately said, "9G."

Zhan Jifeng nodded, "The answer is correct."

Hearing him say this, everyone around him immediately cast envious glances at Fu Shiyu.

"Next question," Zhan Jifeng asked again, "What is the most accurate official definition of the J-10?"

This question is a bit difficult, but the difficulty is not great.

Still many students raised their hands.

Zhan Jifeng randomly called a boy's name, and the boy stood up excitedly and blurted out, "A single-engine, single-vertical-tail, 10-ton light air superiority multi-purpose fighter."

"correct answer."

"The third question is, what is the maximum ceiling of the J-10?"

"18000 meters." Someone answered immediately.

Zhan Jifeng saw this.

While I recognized this group of students in my heart, I also decided to increase the difficulty level.

"As we all know, the J-10b is an improved version of the J-10a. The engine of the J-10b is the latest version of the AL-31FN, with a thrust of 13.5 tons. Since the thrust of the engine has increased, why has the J-10b lost weight compared to the original aircraft?" asked Zhan Jifeng.

Uh!
This question confused most of the students.

Jiang Chen looked around.

I noticed that no one raised their hand.

So I raised my hand for the first time.

Zhan Jifeng saw Jiang Chen in the crowd raising his hands above his head.

Suddenly I felt happy.

You boy!
Finally I couldn't hold it back anymore.

Without any hesitation.

He immediately called Jiang Chen's name, "You are the only one who raised your hand, Jiang. You should answer this question."

The boy named Jiang?
Chief of Staff Zhan knows me?
However, Jiang Chen did not think much about it, but answered, "Because weight control is one of the extremely core issues in aircraft design."

"Tell me more details." Zhan Jifeng was not satisfied with his answer.

"In order for an airplane to overcome gravity and fly in the sky, it needs to generate a pressure difference through the air flowing at different speeds on the upper and lower surfaces of the wing to form an upward lift, and this process will be accompanied by various forms of resistance."

"The more weight a plane has, the more lift it needs to generate — which inevitably causes a significant increase in drag."

"On the other hand, the remaining thrust after the engine thrust overcomes the aircraft's flight resistance becomes smaller and smaller, while the aircraft's mass increases; referring to Newton's second law F=MA, we can see that this will inevitably lead to a decrease in the aircraft's acceleration and climbing capabilities."

"This double negative impact has always been a concern for aircraft design units, from the initial basic layout type and approximate size selection to the later detailed design and various improvements after the finalization. How to reduce weight as much as possible while ensuring that functions and performance are not reduced is always a problem that aircraft design units pay attention to."

"As the domestic composite materials technology gradually matures and is widely used, it is a general trend to use these composite materials on fighter aircraft bodies."

"The J-10B fighter jet uses a lot of composite materials, so its weight is reduced by several hundred kilograms compared to the original aircraft."

"Don't underestimate these few hundred kilograms. Not only can the J-10B increase its combat radius, but it can also carry more powerful fire control radars and longer-range air-to-air missiles, making the J-10B fighter's combat capability a qualitative leap."

"So it's not that the designers intentionally reduced the weight of the original aircraft, but it's the inevitable result of using new materials in the improved aircraft." Jiang Chen talked freely.

Only then did a look of satisfaction appear on Zhan Jifeng's face.

I gave him a thumbs up and said, "Very good answer. You get full marks for this question."

But he didn't say much.

There was a pause.

The next question was raised.

This unique aviation knowledge quiz became extremely tense from the very beginning.

Again.

None of those who can get into the Air Force University are stupid.

So general questions are not difficult for them at all.

However, as the questions became more and more tricky, more and more people were "eliminated".

The competition lasted for nearly twenty minutes, and there were still more than a dozen people persisting.

Among them are Jiang Chen and Fu Shiyu.

(End of this chapter)