This feeling was very wonderful, and reminded Yang Jing of the first time he used the restricted time-space travel skill.

George's voice sounded again: "Boss, how do you feel? I mean, you don't feel any discomfort, right? The current speed is 1.05 Mach, which is close to the speed of sound at sea level. Of course, if you want to go faster, that's fine, but it requires climbing a little higher. The air at this altitude is still too dense. We must go to a higher altitude to continue to increase the speed."

"I'm fine, it's just that this feeling is very strange. It was all chaotic just now, but now I can't hear anything."

"Haha, that's right. As long as you fly at supersonic speed, you can always experience this magical feeling. Boss, sit tight, I'm going to start climbing."

Then, George pulled the joystick slightly, and the plane began to climb at a relatively high angle. In the state of supersonic flight, it is impossible to make sharp turns or pull up and down, so George can only climb in a relatively gentle way.

A few minutes later, the altimeter showed that the altitude had reached 39,000 feet, which is about meters.

The F15D has a maximum climbing altitude of meters, so it is very easy to fly at an altitude of less than 12,000 meters.

At this time, when the aircraft entered a horizontal flight state, within a few minutes, the speed of the aircraft had increased to Mach 2.

That is to say, at this altitude of 12,000 meters, the speed of this F15D has exceeded 2,100 kilometers per hour.

The altitude of twelve thousand meters exceeds the height of the clouds, so with the clouds as a reference, the speed of Mach 2 immediately stands out.

To be honest, Yang Jing has never felt such a fast speed since he was a child. It is estimated that more than 99.999% of the people in this world have never felt such a speed.

A speed of 2,100 kilometers per hour may not sound very fast. It is really insignificant compared to the speeds of aircrafts and other spacecrafts in space that easily exceed 30,000 kilometers per hour. However, there is no reference in space, so even if you are speeding a hundred times faster than the speed of sound, you will not feel fast.

And now flying above the clouds at a speed of nearly 600 meters per second, the feeling is really incomparable. Supercars and helicopters are all weak in front of this speed.

Moreover, we are flying above the clouds now, with nothing blocking our way. The strong sunlight shines directly through the atmosphere, and coupled with the reflection of the clouds below, it makes everything here white. However, when we look up at the sky, we can find that the sky is even bluer, deeper and purer.

After one minute of flying at Mach 2, George began to slow down. Even a heavy fighter could not fly at such a high speed for a long time. As for the American science fiction blockbuster "Top Secret Flying Crab", those fighter planes can fly across one-third of the Pacific Ocean at a speed of more than Mach 4. Such a scene can only appear in movies at present, and it is impossible to do in reality.

"Boss, how does it feel? Is it exciting?"

"Well, very exciting. So this is what supersonic flight feels like! Not bad, very good!" Yang Jing did not hide his feelings and had to praise what was due.

"Boss, you just felt the extreme speed. Now I want you to feel the extreme height. I will continue to climb and take you to the stratosphere. The altitude will exceed 50,000 feet."

"Fifty thousand feet? Doesn't that mean it's more than fifteen thousand meters?" Yang Jing was a little surprised.

"That's right, it's more than 15,000 meters high, that's the real stratosphere. Although we are almost at the stratosphere now, this height is not enough. The higher you go, the more beautiful the scenery will be. Boss, I guarantee that you will be very shocked when you reach that height."

"OK, let's go up and take a look."

At this time, Yang Jing and George had already put on oxygen masks. At this altitude, they would definitely not be able to bear it without them.

Although the speed of the F15D has dropped, its altitude is constantly climbing, and the numbers on the altimeter are constantly breaking new heights. It has to be admitted that even though the F15D is an old model that has been in service for nearly 50 years, the performance of this aircraft is really not exaggerated.

Continuing to climb upward from an altitude of 12,000 meters, although the speed was not as fast as climbing below 10,000 meters, it still made Yang Jing a little frightened.

It took less than a minute for the F15D to steadily cross an altitude of 15,000 meters.

"Boss, we are now at an altitude of over 50,000 feet. We have already entered the stratosphere. Um, do you know the B-2 'Ghost' stealth strategic bomber?"

"I know that aircraft. It's said to be the most expensive aircraft in the world. It's also stealth. It looks pretty cool."

"Haha, yes, the B-2 is really awesome. When it is performing its mission, it flies at this altitude or even higher."

At this altitude, there were no clouds above his head, and all the clouds were below him. The sky at this altitude was bluer and the visibility was higher. Yang Jing could even vaguely see the moon under direct sunlight.

Flying at an altitude of more than 15,000 meters is no longer high-altitude flying, but is called "super-high-altitude flying." Usually, the aircraft that can fly at this altitude are mostly high-altitude reconnaissance aircraft or strategic bombers. Ordinary fighters rarely fly at such a high altitude.

My dear, there is more to this chapter. Please click on the next page to continue reading. It’s even more exciting later!