I ask you to build tractors, but you build rockets?

"Height 700, speed 535 per hour!"

"Height 1100, speed 710 per hour!"

"..."

After Lei Qing took off the plane, it turned 90 degrees towards Yinchuan and began to control the plane to climb slowly.

He was not in a hurry to turn on the afterburner, and kept accelerating while maintaining military thrust. He waited until it climbed to 5,000 meters and exceeded the speed of sound before testing the top speed.

In the mystery of supersonic flight, the engine is actually not as big a factor as the airframe design. A good shape that matches the optimal engine working range is the focus of the design, but this often requires avionics equipment and bomb carriers. Cabin compromise requires precise control of the balance point.

The 62-ton aircraft feels incredibly light when operated, and climbs very quickly. It reached an altitude of 5,000 meters just 3 minutes after takeoff, and just exceeded the speed of sound.

After crossing the sound barrier, the noise in the cabin instantly dropped by one level. Lei Qing was ready and reminded the escorting J-20B:

"Swift, I am Peregrine Falcon, I am preparing to accelerate, please keep a safe distance, please keep a safe distance!"

"Swift understands, Peregrine, and good wind!"

The call sign of the accompanying J-20 is "Swift", which refers to the white-throated needle-tailed swift that flies extremely fast in nature. The "Peregrine Falcon" can reach speeds of more than 400 kilometers per hour when diving, making it the fastest bird.

After responding to "Swift", Lei Qing checked the pressure and temperature of the cockpit and flight suit, and finally turned on the afterburner.

The accompanying "Swift" for observation saw the "Peregrine Falcon"'s blue tail flame suddenly lengthening to nearly half of its body from a distance. The two aircraft turned on afterburners at the same time, but the J-20B's acceleration was obviously not as fast as the Snow Falcon's.

Lei Qing only felt his body shake slightly, and then the numbers on the altimeter and speedometer began to beat crazily.

The snow swan's top speed can only be reached at an altitude of more than 47,000 meters with a thin atmosphere, but from now on, the speed of the aircraft began to increase rapidly, which was unbelievable.

The radars that locked onto the two aircraft on the ground were not ordinary radars. Although the Snowbird during the test flight was not coated with a stealth coating, ordinary radars could not keep up with its speed when flying at Mach 10. They had to be used to target ballistic missiles and Only the rocket's special radar can detect it. The J-20B solves this problem through the Longbo lens (an external device that destroys the stealth so that the radar can detect it).

In the tower of the desert base, Androv and Dou Ping watched the Snowbird climb to 29,000 meters in just 5 minutes. The speed had exceeded Mach 3.6 and broke through the heat barrier. The J-20B could no longer keep up and was thrown away!

Lei Qing in the cockpit could clearly feel the downward and backward acceleration at the same time. If he hadn't known what kind of aircraft he was flying, he would have even thought that the speedometer was convulsing!

Thirty-five thousand meters, forty thousand meters, forty-five thousand meters, in the 8th minute after afterburner, the speed has reached Mach 7!

In a crazy climb that made everyone in the sky and on the ground tremble with fear, 16 minutes after takeoff, the climb rate finally began to decrease due to marginal effects, and the acceleration started to decrease from 50,000 meters. At this time, the speed had exceeded Mach 9.2!

"Dongyao! Report the situation!"

"All good, all good! I can see the clouds receding rapidly now! The edges of the portholes are glowing, giving off an orange-red light!"

Not just the clouds, because the speed is too fast, the surrounding sky is obviously receding as the light changes, and in a few minutes, the sky changes from blue to deep blue that is almost black, and the curvature of the earth has become extremely obvious. As you can see, it is no different from space flight!

Although the acceleration has slowed down, it has not stopped. The designed altitude limit of 52,000 meters has also been exceeded. When the altitude exceeded 54,000 meters, the numbers on the speedometer were already incredible:

[ASL: 54570m] [SUF: 3304 m/s]

The ground tower was stunned when they saw the speed returned by the satellite, 3304 meters per second, 11.4 times the speed of sound!

While everyone was stunned, the altitude rose to 56,300 meters, and the speed increased to 3,347m/s, 11.54 times the speed of sound.

It took 22 minutes from takeoff and 19 minutes of afterburning. Finally, the snow swan's speed finally stabilized at 11.5 times the speed of sound, flying crazily at an altitude of 56,000 meters.

Now it will pass a distance of 3.35 kilometers every second and fly a distance of 12,000 kilometers per hour. Lin Ju's frequently flown Xinyuan-Beijing route only takes 7.5 minutes to reach, and the 8,000-kilometer transoceanic route only takes 40 minutes.

Lei Qing, who already had goosebumps all over his body, glanced at the parameters of the sensors outside the cabin: the nose temperature was 1140 degrees Celsius, the average surface temperature of the aircraft body was 811 degrees Celsius, and 89% of the fuel remained.

It is no exaggeration to say that the current Lei Qing is no different from flying a space shuttle back into the atmosphere. The thermal insulation material of the Snow Hu's body is the fourth generation improved thermal insulation protection technology from Xinyuan and the same as Tengyun Engineering. !

Dou Ping and the researchers on the ground were so shocked that they were speechless. The design of the Snow Hu was better than imagined. At this altitude and speed, it was impossible for any fighter to shoot it down. Even the radar lock was very tight. difficulty.

Radar stations in multiple military districts along the way rely on relay detection to find it. If stealth paint is added, it can be completely hidden in the radar display with a little maneuvering.

Person A on duty at Alxa Radar Station saw himself getting closer and closer in the light spot and walked out of the control room. Then he saw a white meteor streaking silently and rapidly in the evening sky.

"..."

It's over, 12 times the speed of hypersonics is too fast. Even if it collides with the thin atmosphere of more than 50,000 meters, the surface of the aircraft will start to glow. The oblique shock wave cloud generated by the impact of the nose of the aircraft into the air will spread for at least two or three kilometers, allowing people on the ground to You can directly see the outline of a triangle spreading, and the snow swan itself is extremely conspicuous.

"Squad leader, the target has been lost!"

Duty B in the control room exclaimed, but he heard the squad leader outside making complex complaints:

"It is said that the new No. 10 project is a stealth aircraft...Are they going to use optical stealth?"

Duty B, who didn't know the truth, also came to the window and opened his mouth in shock.

Invisible? Hide your ass!

However... even if it is discovered, it is unlikely to be shot down. An aircraft flying at Mach 12 must have at least a Mach 20 missile. Only ballistic missiles can reach this level. Should it be used to counter aircraft?

Duty Officer A: "Instead of letting our radar find it, why not set up a few cameras? It would be too provocative for this thing to appear over the enemy in the future, right?"

Duty Officer B: "Squad leader, from now on we will be even more arrogant than when Ami drove the Blackbird."

Duty Officer A: "Hey, you should be so arrogant, it's better to fly over from Ami's land!"

Lei Qing knew nothing about the complaints on the ground. He now discovered a serious problem:

He just lost his concentration for a moment, and now he has flown 1,900 kilometers and passed over Yinchuan!

Please give me some monthly tickets, family members...