This feeling is very wonderful, reminding Yang Jing of the scene when he first used the restricted-level space-time shuttle skill.

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

"I'm fine. It's just that this feeling is very wonderful. I was so messy just now, but now I can't hear anything."

"Haha, that's it. As long as you fly supersonically, you can always feel this magical feeling. Boss, sit firmly and I'm going to start climbing."

As he said that, George pulled the joystick slightly and the plane began to climb at a relatively small angle. In supersonic flying, he could not perform violent steering or pulling and falling movements, so George could only climb in a relatively gentle way.

A few minutes later, the altimeter showed that the height at this time had reached a height of 39,000 feet, which is about 11,887 meters.

The f15d has an extreme climbing height of 19,800 meters, so it is still very easy to fly at an altitude of less than 12,000 meters.

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

In other words, at this altitude of 12,000 meters, the speed of this f15d has exceeded 2,100 kilometers per hour.

The height of 12,000 meters has exceeded the height of the clouds, so with the clouds as a reference, the speed of the two Machs is immediately highlighted.

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 people in this world have never felt such speed.

The speed of 2100 km/h does not sound very fast, and it is really insignificant compared to the speed of spacecraft such as space shuttles that often exceed 30,000 km/h in space. However, there is no reference in space, even if you are a hundred times the speed of sound, you can't feel that you are going to be fast.

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

And now I am flying above the clouds, with no obstruction above. The strong sunlight directly passes through the atmosphere and shines here. Coupled with the reflection of the clouds below, it makes the sky full of white flowers. However, looking up at the sky, you can find that the sky is bluer, blue deep and blue purity.

After a minute of extremely fast flight of two Machs, George began to slow down. Even heavy fighters could not continue to fly at such a high speed for a long time. As for the fighters in the American science fiction blockbuster "Top Secret Flight" that can fly over one third of the Pacific Ocean at a speed of more than four Machs, that kind of scene can only appear in the movie at present, and it is impossible to do it in reality.

"Boss, how does it feel? Isn't it exciting?"

"Well, it's very exciting. It turns out that supersonic flight tastes like this! Not bad, very good!" Yang Jing did not hide his mood. Those who should be praised must be praised.

"Boss, you just felt the ultimate speed. I would like to ask you to feel the ultimate height. I will continue to climb and take you to the same stratosphere for a while, the height will exceed 50,000 feet."

"Fifty thousand feet? Wouldn't that be more than 15 thousand meters?" Yang Jing was a little surprised.

"That's right, it's just a height of more than 15,000 meters, where the real stratosphere is. Although we are at the same level as the stratosphere, this height is not enough. The higher the scenery, the more beautiful the scenery is. Boss, I promise that you will be very shocked after reaching that height."

"Okay, then go up and take a look."

At this time, Yang Jing and George had already worn oxygen masks. At this height, people would definitely not be able to bear it if they didn't wear that thing.

Although the speed of f15d has dropped, the altitude is constantly rising, and the numbers on the altimeter are constantly breaking through new heights. It has to be admitted that even if the f15d is an old model that has been in service for nearly 50 years, the performance of this aircraft is really not exaggerated.

Continue to climb upward from an altitude of 12,000 meters. Although the speed is not as fast as it can reach below 10,000 meters, it also made Yang Jing a little scared.

It was useless for a minute, and f15d steadily crossed a height of 15,000 meters.

"Boss, the current height has exceeded 50,000 feet, and this height has completely entered the same stratosphere. Well, do you know if you know if the b-2 ‘Ghost’ stealth strategic bomber is there?"

"I know that aircraft, known as the most expensive aircraft in the world, is stealthy and looks very awesome."

"Haha, that's right, b-2 is really great. When performing a mission, it flies at this altitude and even more upward."

When you reach this height, there are no clouds above your head, and all the clouds are under your body. The sky at this height is bluer and has higher visibility. Yang Jing can even vaguely see the moon when it is direct to the sun.

Flying at an altitude of more than 15,000 meters is no longer called "high-altitude flight", but is called "ultra-high-altitude flight". Most of the aircraft that can fly at this altitude are high-altitude reconnaissance aircraft or strategic bombers, and ordinary fighters rarely fly to such a high altitude.

Because at this altitude, the air pressure is already very low and the air is thin, which will have adverse effects on the aircraft engine performance and the aerodynamic performance of the aircraft, reducing the gravity and drag of the aircraft, reducing the acceleration and deceleration performance, and deteriorating the aircraft's stability and maneuverability will be deteriorated. If you are not careful, it will cause dangerous situations such as stall spirals, pitch and swing, and in extreme cases, air parking will also occur.

Therefore, fighters will only fly to such a high altitude unless they are tested for aircraft performance or are very necessary, fighters will usually move at an altitude of 7,000 meters.

This is like a fighter will not fly supersonic under normal circumstances. Whether it is supersonic or super high altitude flight, it will cause considerable damage to the fighter itself.

But this time George pulled Yang Jing to the sky, so he had to let the boss feel the speed and altitude, so George first flew at a speed of Mach 2, and then came to an altitude of more than 15,000 meters.

George's actions were indeed satisfied and praised by Yang Jing. Yang Jing couldn't even praise him. Whether it was the rapid flight just now or the ultra-high altitude flight now, they were something Yang Jing had never felt before. Even if he had a holy ring that was extremely powerful, at most, the holy ring could only be used to show off, but he would never be able to take him to fly...

After feeling the altitude and speed, George began to control the fighter's descent. It has actually been less than twenty minutes since the takeoff, but in these twenty minutes, at least one thousand dollars of aviation fuel has been burned out.
Chapter completed!