Li Yunlong kept in touch with the ground through the radio, and a wild boar attack plane flying with him was flying more than 1,000 meters away from his side at this time.

But if it is supersonic in a while, the wild boar will not be able to catch up.

Under the nose of the Boar attack aircraft, a camera was installed to film the process of supersonic test flight.

The Peregrine fighter has completed test flights in more than a dozen subjects, and the next step is to prepare for supersonic flights.

In order for everyone to witness, the flight altitude should be reduced to less than 3,000 meters, so at this time, Li Yunlong began to turn on the afterburner and enter the dive, because this is the easiest way to break through the sound barrier.

On the ground, thousands of people were looking up at the peregrine falcon fighter whistling in the sky, it was accelerating and getting lower and lower.

I saw that in front of and on the sides of the fuselage of the Peregrine Fighter, a large white cloud suddenly appeared, and at this time, the engine also burst out with maximum thrust.

Rumble! The sound of the sonic boom came, everyone covered their ears one after another, this sound is indeed too scary, like a violent explosion, some people don't know that this is a sonic boom, and they think that there is something wrong with the fighter plane, and it will disintegrate in the air, they are all scared stupid.

However, this is actually just a normal phenomenon, and it will occur when the sound barrier is broken.

At an altitude of 2,000 meters, the Peregrine Falcon fighter flew over the airport at a speed of Mach 1.05, which immediately made everyone excited, is this a supersonic flight?

Sure enough, it's not the same as subsonic flight!

Being able to fly at supersonic speeds at low altitudes is really remarkable, because the air density at low altitudes is high, it is more difficult to break through the sound barrier than at high altitudes, and the pressure on fighters is also very high.

However, Duan Peng is confident, because he designed it, and naturally knows that the peregrine falcon fighter can do it, and there is no problem at Mach 105.

After all, this speed is not very fast, and it is still smaller than the maximum flight speed of those third-generation aircraft at low altitudes.

This is the first time in the history of human aviation to achieve supersonic flight, and this record will be held for a long time, everyone believes this, because except for Duan Peng, it is impossible for anyone to design a supersonic fighter, at least not for a few years.

Soon, Li Yunlong turned off the afterburner and let the fighter out of supersonic flight, because the afterburner is limited, and it can be driven for a maximum of five minutes.

In the cabin just now, Li Yunlong also felt the difference of supersonic flight, because after breaking through the sound barrier, the entire cockpit was surprisingly quiet, and no noise could be heard, because the sound was left behind.

At an altitude of 3,000 meters, the accompanying wild boar attack plane also took pictures of supersonic flight, which was very spectacular.

The pilot who piloted the Boar fighter was stunned, and now he found that the Boar attack plane he was piloting was indeed inferior to the Peregrine Fighter in many places.

If the peregrine fighter is really like a peregrine falcon in the air, then the wild boar attack aircraft he pilots is really like a wild boar, and if it has to be said to be an animal flying in the air, it can only be regarded as a pterodactyl at most.

After completing the supersonic flight, this test flight is over, Li Yunlong piloted the peregrine fighter and began to land, which is of course very dangerous at this time.

However, with superb technology and good maneuverability of the aircraft, the landing was still very successful, the landing gear was smoothly lowered, and then the fighter entered the field at a speed of 250 kilometers per hour.

The speed of this landing is indeed faster than that of many aircraft, like those propeller fighters, their approach speed is only more than 100.

The slower means the better the landing, but this landing is still very perfect, when the Peregrine Fighter landed smoothly on the runway, releasing a red and white umbrella flower, everyone cheered, the Peregrine Fighter made its first flight, a complete success.

This is a milestone first flight, because this is the first time in human history that a manned aircraft has broken through the speed of sound, and it has been completed at a low altitude, which is a remarkable feat, and the person who completed this feat is none other than Li Yunlong, China's best ace pilot.

You must know that in the ranking of ace pilots in the world, Li Yunlong is now the first, he has participated in many air battles and shot down more than 300 planes of little devils.

You must know that in World War II, in the original history, the number one ace pilot shot down in this era has not exceeded 100.

So Li Yunlong became a well-deserved and the world's No. 1 ace pilot.

Now Li Yunlong has become the world's first supersonic flying ace pilot, which really makes him extremely proud.

After the peregrine falcon fighter stopped, the ground crew quickly surrounded and set up the boarding ladder, and Li Yunlong came down from this ladder.

Duan Peng and the leaders all greeted him.

The leaders shook Li Yunlong's hand and congratulated him on the success of his first flight and the successful realization of supersonic flight.

Li Yunlong was very happy, and then the senior representatives of the allied forces also stepped forward one after another, shook hands with Li Yunlong, and some even hugged Li Yunlong directly, which was also too enthusiastic.

Now everyone is starting to take a closer look at this fighter jet that exceeds the speed of sound.

This supersonic flight did not cause any damage to the aircraft, and it still looked as good as new.

The huge air intake in the belly of the machine is also curious to many people, and of course the tail nozzle is also the same, but now the tail temperature is high, so it can't be visited or touched here.

An Allied pilot entered the cockpit of the Peregrine Falcon, because they would fly this fighter in the future, and the Allies had ordered a lot, so now they couldn't wait to experience it, even if it was just static.

But they all wanted to fly this fighter themselves and broke the sound barrier.

So in the next step, the pilots of the allied forces all surrounded Li Yunlong and asked, how did this sound barrier break through, and what was it like after the breakthrough.

Li Yunlong was not stingy, and told all the previous processes.

This is indeed the envy of the Allied pilots, although they will also fly peregrine fighters in the near future to complete supersonic flights, but they are not the first people, and not many people will remember them.

In the future, people will only remember that the first person in the world to fly an airplane and exceed the speed of sound was Li Yunlong, the ace pilot of the Chinese Eighth Route Army.

And Li Yunlong is the leader of the Eighth Route Army Air Force, so this is indeed known to the whole world.

Of course, Duan Peng is not to mention, he is the one who designed the first supersonic fighter, and he is also the most powerful aircraft design master in the world.