151 Business Teacher, am I right?

The more Chen Fei listened, the more excited he became. The more he heard, the more he felt like he was being scratched by cat claws. He felt itchy and wanted to be on the plane and feel the style of the J-10D now.

Shangqiu's eyes were often focused on Chen Fei. Seeing that he was a little restless, he asked with concern: "Comrade Chen Fei, are you feeling uncomfortable?"

Chen Fei was puzzled.

He didn't feel uncomfortable anyway.

He is very good!

How could Shangqiu say he was uncomfortable?

Oh, yes!

He quickly remembered that he was twisting around the seat, like a thorn on his butt, and that was misunderstood.

He quickly stood up and said, "I am not feeling uncomfortable when I report to the business teacher."

Shangqiu nodded. She didn't want to let Chen Fei go, and asked, "So, Comrade Chen Fei, what do you think of the topic I just said?"

Chen Fei actually had nothing to say, but since the other party spoke, it seemed unreasonable not to say anything.

Chen Fei has always been a good student. What a good student means is that when teachers ask questions, they must cooperate in time and not let the teacher be distracted. Therefore, when they are in high school, the subject teachers like to ask questions very much when they are in open classes, because he can always cooperate perfectly. He will answer the answers of the teacher. Sometimes he will answer the wrong answers on purpose to give the teacher the opportunity to perform. Therefore, many teachers like to attend open classes at their class at that time. So at this moment, Chen Fei thought for a brief moment and said, "Report, Teacher Business, I don't quite understand the question you just said."

"You said!" Shangqiu looked at Chen Fei without blinking.

Chen Fei originally wanted to look at Shangqiu because it was a good student's habit, but Shangqiu's eyes were too hot and he couldn't stand it, so he hurriedly lowered his head and said, "You said just now that the stall performance of J-10 d has been greatly improved compared to J-10 c, but how much has it been improved, how much is it, and is there a data expression?"

Shangqiu was stunned. She blinked her eyes before speaking: "Do you want to understand the typical stall mathematical model of J-10 d?"

Chen Fei was stunned, then nodded.

Shangqiu smiled brightly. She pulled the whiteboard over with a flash, picked up a whiteboard pen, turned around and said while writing: "Although current research has proposed a variety of stall maneuvering actions, I think that by analyzing these typical maneuvering processes, stall maneuvering can be summarized into a combination of three basic movements, fixed direct flight movement, rapid pitch movement, and rotational movement around the speed vector. For my classification, Comrade Chen Fei, do you agree?"

Chen Fei nodded.

Shangqiu is worthy of being a doctor. A simple classification divides the stall maneuver that they have to argue for for a long time into three concise types, which has to be convinced.

Shangqiu saw Chen Fei nodding, so he continued: "The other two movements are relatively simple, so let's study the rotational motion around the velocity vector. We decompose the total rotation vector of the aircraft into a component along the velocity vector and three components along the body axis. The total rotation vector can be determined by the total angular velocity of the body axis. The component along the velocity vector is the projection of the total angular velocity Ψ on the velocity axis, which is called the steady-state rate. The component along the body axis is the angular velocity of the three body axis, which is deducted wss on each axis, which is called the oscillation component..."

While she was talking, she wrote various mathematical expressions on the whiteboard.

In the small conference room, except for Chen Fei and Yang Dong, the other pilots were confused, sometimes confused, and sometimes they didn't understand, sometimes they felt like falling into the clouds, and they were confused and didn't know where they were.

Although everyone is a natural resource, what Shangqiu talks about is too professional after all, at the level of a doctorate. Moreover, after everyone is in the army, they learn less and less about theory, and they basically focus on tactics and tactics, so they are very hard to listen to at this moment.

But Chen Fei understood.

He has never given up on theoretical exploration and learning, and he can pick up attributes from time to time. In addition, his IQ has improved unknowingly, so he basically understands what Shangqiu said at this moment.

Shangqiu wrote the last conclusion in a mathematical formula. After that, she slapped the whiteboard pen on the table with a bang, then looked up at Chen Fei: "Now, do you know the advantage of J-10 d in stall maneuver, right?"

Chen Fei did not answer, he frowned and fell into a state of hard thinking.

Shangqiu did not urge, nor was he dissatisfied because Chen Fei did not answer in time. She just looked at Chen Fei quietly.

That face looks really good!

She said silently in her heart.

Just when she was a little crazy about her eyes, the five pilots below were wailing in their hearts and saying that I am so handsome, why don’t you look at me? Isn’t Chen Fei just a little more handsome than me? Chen Fei suddenly said excitedly: “Teacher Business, I understand!”

Shangqiu, who was stunned, was startled and almost turned her leather boots. Fortunately, she pressed her hands on the table in time, thus avoiding the embarrassing situation.

I was really too devoted just now, and I was afraid I could even saliva!

Shangqiu felt a little embarrassed and quickly raised his hand to cover it up.

"Comrade Chen Fei, what do you understand?" Shangqiu quickly changed the subject and asked.

Chen Fei thought about it for two seconds before saying: "If you follow your deduction just now, if I drive the J-10 D to do Herbst maneuver, the process should be like this. My plane started to increase force at around 425km/h and entered the maneuver.

Then increase the angle of attack and slow down quickly.

When the pull rod raises the aircraft to a state that is close to vertical upward, the angle of attack is 70° and the speed is about 280km/h. At this time, I pedaled the left rudder and used the thrust vector to roll around the speed vector axis at extremely low altitude at a large angle of attack, causing the aircraft to deflect the left 180° and the maximum deflection rate is about 20°/s.

Finally, the nose of the aircraft is vertically downward, then slightly loosen the rod to reduce the angle of attack, and gradually change to dive. The turning radius drops from 823m to 145m, and the entire process lasts only 20s, including the time required to start leveling the aircraft from the velocity of the head lowering posture.

Business teacher, am I right?"

“…”

Shangqiu did not answer, she was stunned when she heard it.

She never thought about it that Chen Fei could deduce the physical process of Herbst's maneuver from the things she said.

The J-10 D can naturally do Herbst maneuver, but the maneuvering process in the flight manual was explored by the test pilots again and again with extremely high risk test flights. However, Chen Fei directly deduced it from the theory, and the obtained data is not much different from the real data of the J-10 D!

This guy...

Still human?

The Shangqiu Zongheng academic community has never seen such a perverted freak in so many years!

She was shocked and didn't know how to answer.

In the small meeting, Li Donghai, Yang Dong, Li Cheng, Huang Haijun, Qin Qingyu, and the five people also stared at Chen Fei blankly.

What happened to this guy today? Has he already fallen under the skirt of this beautiful doctor? He even deduced the process of Herbst's maneuvering. He has never seen him fight like this before!

etc!

Why is it a little wrong!

Isn't the Herbst maneuvering process he derived true, right?

Didn't he joke?
Chapter completed!