Here, one thing has to be mentioned is that Xu Wei has a slight fear of heights, which is not very serious. But on the seventh or eighth floor, when Xu Wei looked down, his legs would feel some discomfort, and the ugly thing was that his legs were weak. It seems ridiculous that a pilot should be afraid of heights! It's as incredible as a nurse fainting and a swimmer being afraid of water.

Xu Wei had also thought about this issue before, and after careful consideration, he came to the conclusion that normal people will have a certain fear of heights, as long as it is not serious, the problem is not big. This conclusion is highly subjective, but it is enough for Xu Wei to deceive himself.

Until now, when the plane takes off, Xu Wei can feel that the plane is climbing more clearly than the large passenger plane, and the unreality of taking off gives Xu Wei a strong sense of crisis. Xu Wei has not been in the cockpit of a large passenger plane, but the sense of climb in the cabin is very peaceful. In comparison, the climbing feeling of the small plane was a little too strong, and Xu Wei's little heart was beating wildly, for fear that the plane would stall.

The so-called stall means that the angle of attack of the aircraft is too large, resulting in the interruption of the continuity of the airflow on the upper surface of the wing, the destruction of lift, the increase of drag, the aircraft will lose lift in a short period of time, and the nose will fall.

There are two types of single-engine stall training - power_on_stall and power_off_stall, which simulates the stall during take-off and climb followed by the pre-landing stall, which is also the training content of the private driver's license training stage.

The twin engines will also have stall training in the event of a single engine failure, i.e., VMC training. There is this training because, when an engine fails in a twin-engine aircraft, the pilot will subconsciously pull back the steering stick (disk) in order to maintain altitude, and excessive pulling back the steering stick can easily lead to a stall, and at the same time, because of the failure of a single engine, the thrust on both sides of the aircraft is different, and the aircraft is easy to lose its directional balance, and lose its directional balance and stall at the same time, which means that the aircraft may enter the spiral (spin), and for large passenger aircraft, entering the spiral is basically equivalent to death, because large passenger aircraft cannot be changed out of the spiral. Therefore, it is extremely important to contain the situation at the moment of stalling, and VMC training is prepared for this purpose, the details of which will be detailed in the commercial lighting stage.

Xu Wei felt as if his heart was stuffed in his throat, it was the first time he had seen such an exciting climb, and he had the urge to press the steering wheel to reduce the climb angle. The instructor seemed to feel that the climb was too slow, and pulled the steering wheel back slightly, Xu Wei's breathing stagnated, as if it was not the steering wheel but his heart. The plane quickly climbed to three thousand feet, where the air temperature was already significantly different from the ground, and the cool wind blew down the vent to Xu Wei, but Xu Wei clearly felt that cold sweat was constantly oozing from his palms and forehead, sticky and extremely uncomfortable.

The plane finally stopped at an altitude of four thousand feet. The steady cruising state made Xu Wei feel a little relieved, and leaning against the window, Xu Wei saw scattered houses and large grassy areas below. Unlike what he expected, Xu Wei didn't feel much discomfort, at least it was more comfortable than looking down from the tenth floor. Faintly, Xu Wei heard the instructor talking to the controller, but he didn't care much, and most of his attention was still wandering away from the scenery below. While enjoying the scenery of the sky and the ground, while blowing the cool high-altitude wind, it was like boiling water gradually cooling down and no longer boiling, Xu Wei's heart finally stabilized.

However, the good times didn't last long, Xu Wei suddenly felt that the plane began to tilt, Xu Wei only said that the instructor wanted to turn, and he didn't care. As the slope continued to increase, Xu Wei finally felt something strange, and the slope was already about 30 degrees. Xu Wei leaned over, feeling the plane keep turning, the feeling of overweight was already very obvious, and the discomfort hit his mind, making Xu Wei dizzy. The instructor looked at ease, grabbed the steering wheel with one hand, and stopped the downward trend of the aircraft by pulling the steering wheel back, because when making a turn, the aircraft will have a downward trend, and the pilot needs to react to control it. Grasp the throttle with one hand and change the throttle output at any time to balance the altitude of the aircraft, although throttle changes are rarely used in general.

The instructor hummed a small song, and once again increased the turning slope to forty-five degrees, Xu Wei felt as if his whole body was being suppressed, he couldn't breathe, and his eyes were staring at the propeller. The deep turn caused the propeller to produce a large load, and the sound of "whew, whew" was heard, which was extremely terrifying. What if at this time, the propeller is overwhelmed and stops! Therefore, Xu Wei could no longer take his eyes off the propeller, he had to always make sure that there was nothing abnormal about the propeller.

The instructor did not feel a trace of discomfort, and looked at the scenery outside from time to time.

“steep_turn，interesting，ahh…”

Xu Wei couldn't say a word for a long time, is it interesting? Probably, enjoying the feeling of being overweight that you can't experience on the ground, and looking at the ground sideways at a 45-degree angle does have quite a visual impact, but it's just a little too exciting.

The instructor talked a long time, and Xu Wei could tell that steep_turn (deep turn) is a compulsory item in the license exam, and one of the requirements is that the altitude loss cannot exceed 100 feet, and at the same time, the aircraft cannot exceed the original altitude of 100 feet. Because, some pilots are afraid of the altitude drop, and pull the steering wheel too violently, resulting in the altitude not falling but rising, which also does not meet the requirements of altitude maintenance.

"It's still highly maintained, and now my mind is blank, and it's a problem to read and count." Xu Wei thought psychologically. "Why do you have to do such a drastic action, isn't it good to be soft?"

Suddenly, the instructor leveled the plane, and Xu Wei suddenly felt the beauty of life. However, the instructor's next sentence made Xu Wei's whole person feel bad.

“let_us_do_stall!!!” The instructors seemed excited, and their voices were all a few points higher. On the other hand, Xu Wei's face was pale, he had watched the stalled documentary, and he felt terrifying just by watching it, let alone doing it himself