During the second test flight, it entered supersonic speed, if it was a normal subject, it would take months, or even years, how many years did it take for the J-8 to enter the supersonic test flight.

Now, just for the second time, this is not dangerous at all, because it is almost exactly the same as the J-7.

In front of the nose, a stream of water vapor gradually accumulated, and this water vapor gradually increased, surrounding the front of the nose, forming a sharp cone-shaped cloud, which looked quite beautiful, and suddenly, the nose pierced the front cone!

At the moment of piercing, the roar of the engine behind him disappeared, and everything around him became clean, Tang Gang knew that it had entered the supersonic speed, and they left the sound behind, and the roar of the engine could not fly into their ears, because they flew faster than the sound!

"Successfully entered the supersonic and everything is normal." Tang Gang shouted over the radio.

Qin Feng didn't do anything, he just continued to watch from the wall in the back, well, this reflects his current state, as long as he sits.

The front and rear operations, instruments, etc., are almost the same, even the operating levers are linked, when Tang Gang pulls the operating lever, Qin Feng's operating lever here will also follow the movement.

Of course, in order to prevent accidents, Qin Feng's operating stick here can be operated alone, and it is disconnected from the front, in case the pilot in front of him faints, and he suddenly lies on the operating stick and presses the operating stick without moving, then the plane will dive down directly.

In addition to these, behind him, there is a flight failure simulation system.

That is to say, the instructor behind can give the exam questions, what failures occur in the aircraft, how should the pilot respond, and his system can easily simulate various failures that may be encountered in flight.

This is what sets the trainer apart from other aircraft.

The fighter continues to accelerate, accelerate, and since some changes have been made after all, the maximum speed of this aircraft is definitely not as good as that of the prototype J-7 fighter.

Qin Feng looked at the airspeed gauge in front of him, and kept turning to the Mach number of about 1.8, and finally stopped moving.

"Maximum speed, Mach 1.8." Tang Gang shouted, "Now turn off the afterburner." ”

As he spoke, Tang just turned off the afterburner, and in an instant, the plane slowed down.

At this moment, Qin Feng immediately frowned, something was wrong! Why did the fighter bow down?

This is the difference between a test pilot and an ordinary pilot, his senses are more acute, and he almost immediately feels that the plane is diving, which ordinary pilots can't feel.

Fortunately, Tang Gang also felt it, he immediately pulled the operating lever back, and the plane immediately changed out of the state of diving, but went up!

Pull more!

Tang Gang began to push forward again, but this push seemed to be too much, and he began to pull back again.

After a few consecutive blows, the Jianjiao Seven fighters were already violently shaking in the air!

If you look at it from a distance, you can find that the Seven of the Annihilators is constantly bowing their heads and raising their heads, and with each change, the amplitude will increase somewhat, and just like that, the up and down vibrations are becoming more and more intense!

This is at supersonic speeds, and at such times, the vibration can even cause the plane to disintegrate in the air!

"Let go of your hands!" Qin Feng shouted loudly, he immediately reminded Tang Gang, Tang Gang seemed to realize something, and let go of his hand!

Now, the fighter is in a state of climbing, he let go of his hand, and the fighter finally did not continue to vibrate downward, but began to climb upwards, and then climbed, and the speed became slower and slower, and when it climbed five hundred meters, there was a roar behind him again, and they had entered subsonic speed!

"Slow leveling." Qin Feng said.

Even in the situation just now, Qin Feng only reminded him and didn't do anything, he believed that Tang Gang would definitely be able to grasp this fighter!

Now, Tang Gang's hand was softer, and he slowly pushed the lever forward, and the fighter plane finally resumed level flight, and he felt sweat on his back.

The scene just now is still emerging in front of me, and when it shakes so much, I can't even see the dashboard in front of me clearly, which is also terrible!

"Return." Qin Feng said.

Tang Gang's first test flight showed signs of a serious accident!

The wheels touched the ground gently, Tang Gang's landing was perfect, and when they landed, Tang Lao greeted him: "What happened just now?" ”

Donald also paid attention to the shock that had just appeared, it was so dangerous that it almost disintegrated the entire body from the air!

What's going on?

On the side of the plane, Qin Feng and Tang Gang were carrying helmets, Qin Feng turned his head to look at Tang Gang: "Xiao Tang, you can give you an analysis, what happened just now?" ”

This is a fighter trainer, in addition to a flight failure simulation system, there is also a set of flight status recorder, which is used to record the actual flight status of the aircraft, which can be used to study and summarize after returning to the flight to see how effective the flight is.

And now, the technicians began to use the equipment to read the data, ready to continue the analysis, and Qin Feng was also teaching Tang Gang to analyze it himself, what was going on just now?

"I'm a little too aggressive and too adjustable." Tang Gang said: "The moment I turned off the afterburner, I found that the plane was bowing its head, I pulled the operating lever, and the operating lever pulled more, and climbed again, I pushed the lever again, as a result, the more adjusted, the greater the amplitude, if it wasn't for the seniors to remind me to let go of the operating lever, maybe I would really make a big mistake!" ”

Thinking about the situation at that time, Tang Gang felt a little afraid, the more he adjusted, the more powerful he became, if it wasn't for Qin Feng reminding him to give up the adjustment and let the plane fly by itself, then he adjusted a few more times, and the plane would have to disintegrate!

As a test pilot, you must say your own analysis, Tang Gang has analyzed so much, and the signs of the accident just now are clear.

"There's a special name here." Qin Feng finally added: "This is called pilot-induced concussion. ”

Pilot-induced concussion? This name, it seems that where have you heard it? Tang Gang thought quickly in his mind, suddenly thought of something, and said: "Senior, isn't this a kind of failure that can only occur in telex operations?" ”

The term "pilot-induced concussion" seems to mean that the pilot, in fact, is not mainly the pilot's responsibility, but the aircraft control system itself has a problem, when the aircraft in flight shock, the pilot will instinctively use the steering stick to eliminate this shock, in flight, the shock is common. It's like using a force to stop the swing from swinging. However, the aircraft control system was defective, and the force exerted by the pilot, instead of alleviating it, exacerbated it. It's like stopping a swing, it should be pushed backwards, but it turns out to be a positive push, and the shock of the plane becomes more and more serious.

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