This feeling is very familiar, Qin Feng has flown supersonic speed more than once, but this time the feeling is different, because this is the first time that the J-7 has flown supersound!

The body of the J-7 is huge, and the projection area on the front of the fuselage is the largest among all aircraft, although it has a thrust of 18 tons, it is still unclear how fast it can fly, all of this needs to be practiced, just like now.

The nose of the J-7 broke through the sky, continued to accelerate forward, and the pointer of the Mach watch in front of him was also constantly rotating, when it approached 1, it was the most dangerous, and the previous kind of flutter would not appear again?

In front of the nose, a white fog appeared, and this fog, growing bigger and bigger, not only in the nose, but also on the leading edge of the wings.

Qin Feng's heart began to be inexplicably excited, he knew that under such a suitable temperature and humidity, a beautiful shock cone would appear on the nose of the aircraft.

Sure enough, just as he expected, the fog in front of the nose gradually converged and turned into an umbrella-shaped cone, and the airspeed tube in front of the nose was at the top of that cone.

The speed of the plane is also increasing little by little, and the fuselage has a slight tremor, but it is still within the acceptable range, Qin Feng continued to operate the plane, accelerating, accelerating, and suddenly, the nose of the plane jumped forward gently, piercing this layer of umbrella-like fog, and the nose of the plane passed through, and the plane had entered supersonic speed!

This feeling is quite amazing, and the roar of the engine behind him immediately disappears.

Of course, it is impossible to disappear completely, because the speed exceeds the speed of sound, so most of the sound of the engine cannot be transmitted, this is only transmitted through the air, or part of the sound is transmitted through the body itself, but the sound is not loud, the helmet is soundproof, this sound is almost inaudible to the ears.

"Report, it's already over the speed of sound." Qin Feng said, just after saying this, he suddenly heard a soft bang.

This sound immediately made Qin Feng startled, now that it is in a supersonic state, could it be that something has happened to the plane?

During the test flight of the J-8, Qin Feng encountered it many times, and during the test flight, due to too much air pressure, he even tore the skin of the landing gear of the aircraft.

Qin Feng was worried, but it was useless to worry now, he had already completed the test flight, and it was time to end the test flight.

Qin Feng's hand slowly stretched out to the afterburner switch, at this time he had already found that something was not good, why was his movement so slow?

Just after his hand touched the switch and turned off the afterburner, his eyes were already white, and his body fell softly, and this fall happened to press on the operating lever, so the nose of the fighter began to dive downward!

"001, 001, what's going on? Please answer when you receive it! Seeing that the flight attitude of the fighter was wrong, the tower behind suddenly became nervous.

According to the plan, they have already flown past the speed of sound, which is considered to have completed the test flight subject, and after that, it should be time to return, and the return will definitely have to reduce the altitude, but it is definitely not the way it is now, now it is simply diving downward! What the hell is going on?

"Qin Feng, Qin Feng, answer quickly!" I found that there was no reaction in front, and the call on the ground was not even called by the code name, but directly called by name.

"Yang Lin, Yang Lin, what's the situation?" Still no response!

Oh no, something must be wrong!

"Quick, quick, prepare an emergency plan immediately."

This emergency plan is very worrying, in this case, you can only look for the wreckage of the crash of the fighter, in this case, if you fall down at this angle, it is estimated that you can find some parts, as for the pilot...

Old Chen's hand clenched tightly into a fist, seven thousand meters in the air, it didn't take a few minutes to swoop down directly like this, and now, there was less and less time left for Qin Feng, what was the situation?

The elevator is stuck and the plane is out of control? No, if that's the case, at least the radio is in good condition!

The antenna of the radio is broken, the radio is out of order? If all of this is wrong, then at least the pilot can control the plane, even if he can't control the parachute jump.

If it's the worst-case scenario, isn't it, the pilot is already unconscious, unwell, and unable to control the plane?

"001, 001, please answer received, please answer received!" In the radio, the call has been non-stop, even if everyone knows that in the radio, the sound received by the other party has nothing to do with the sound of the call here, but the radioman still uses the loudest voice to call, and with the radio call, the electromagnetic waves are also constantly transmitting the call.

The fighter plane is still losing altitude, from a height of seven thousand meters, it will soon fall to three thousand meters!

The atmosphere below is already quite dense, and if it continues to fall like this, the situation of the plane will be even more dangerous, the drag of the plane will increase, and the speed of the plane will be very fast, in this case, the plane will even disintegrate directly in the sky!

Answer, answer, what is the situation? None of us know!

In the cockpit, there is a swishing cold wind, with the drop in height, the air pressure outside is getting higher and higher, Qin Feng is in the cold wind, and finally slowly woke up, at this time, he has not figured out what the situation is, when his eyes opened, when he found that his body was pressing the operating lever, he was immediately startled, and subconsciously, he hugged the operating stick into his arms.

The fighter plane got rid of the downward state of the nose and began to flatten, and at this time, Qin Feng's hearing slowly recovered, and he heard the call from the earphones.

"001, Roger." When Qin Feng shouted these words, it was still very laborious, but Qin Feng's consciousness had slowly recovered, and he also understood what was happening.

"The cockpit, it's out of pressure." Qin Feng was still weak in the radio, if it weren't for his body being strong enough, he wouldn't be able to regain consciousness at all now, and Yang Lin in the back cabin was probably still in a coma.

The higher the altitude, the lower the air pressure, so, after flying to the high altitude, the air pressure inside the cockpit will decrease rapidly, the person will be unconscious, the cockpit must be pressurized, the cockpit of the passenger plane, to increase to the normal pressure, and the pressure outside is very different, and on the fighter jet, although it is also pressurized, but it is less than half of the normal air pressure, and the pressure difference between the outside world is not very large, so even if the fighter has a pressurized cockpit, you have to wear an oxygen mask.

If he hadn't been wearing an oxygen mask just now, Qin Feng would definitely have died directly due to lack of oxygen. Even so, after dropping a height of several thousand meters, he came to his senses.