YC City.

As a city in the northwest region, just as the citizens of Shangjing and Rongcheng have long been familiar with all kinds of fighter jets, the people here have long seen all kinds of hypersonic vehicles.

Most locals can even recognize the UFOs that are often transmitted to the outside world as a ballistic missile's terminal maneuver or an anti-missile test.

So when the white bright spots of the "Snow Bird" passed through the air, passers-by on the street just cast a little glance and took it back.

"Meas" Mach 10 aircraft are not uncommon here, and they are not as bright as the previous hypersonic vehicles that could reach Mach 20 speeds.

It was only after the "snow birds" disappeared from their field of view that the sound, which was long overdue compared to the light, finally reached the ground.

Unlike the warheads that used to travel at the edge of the atmosphere, the sonic boom from a distance of 50,000 meters was much stronger, and pedestrians on the ground felt that the air around them was exploding.

The windows of the residential houses also shook horribly from the detonation of the air, and some of the closed windows even persisted in shattering after a crisp sound.

The nearby garrison thought that it was a fighter plane flying at a low-altitude supersonic speed in violation of regulations, but the culprit had already flown dozens of kilometers away.

And above the heavenly dome, Lei Qing only came to see the city for a few seconds before he came back to the vast land.

"Peregrine falcon, peregrine falcon! You've flown over!

Please slow down and return immediately, please slow down and return immediately! ”

The radar of the desert base has long lost its target, and it relies on the radar and satellites of other prevention and control areas to mark the route, so it naturally notices the snowy hooves that are running wildly all the way without looking back.

Flying over the line is a minor problem, but with the current course and speed of the Snow Bird, it will enter the territory of Shandong in another five minutes, enter the sky over the southern dynasty in eight minutes, and enter the air defense identification zone of the island country in 10 minutes.

Even if it slows down and makes a big bend back now, it has to pass through the Central Plains provinces like Shanxi and Henan, and the scope of influence is extremely wide.

Dou Ping can already imagine how many words he has to write in order to pass the test.

Of course, Lei Qing in the sky also knows this, but the flight speed of the snow bird is too fast, and the conventional rudder surface and aerodynamic deceleration will easily lead to excessive stress and the body will break, so you have to slowly lower the throttle valve to slow down.

According to common sense, he immediately decided to pull back the throttle valve, but he did not expect that the throttle display did not change after making the move, and two "ooh" warnings sounded in the headset.

The holographic display on the helmet pops up a tooltip:

[The electric auxiliary heating system is not working, and the oil circuit system is not responding]

[O1A0 valve is not responding, trying to re-establish connection]

Underneath the two small yellow translucent letters is a cross-sectional view of the fighter, highlighted where the fault is located.

It is the location of the fuel tank attached to the wing root of the right wing and a small part of the heating module.

The electrically assisted heating system doesn't matter for the time being, it's a measure to deal with ice formation during subsonic flight, and now the surface of the airframe is so hot that it melts bronze.

But the oil circuit system is troublesome, the biggest problem should be the fuel supply valve, so that the fuel is constantly fed into the engine at maximum power, and the nacelle temporarily loses control of the power system.

However, before Lei Qing had time to think about the reason, the AI of the flight computer had already completed several rounds of accident investigation, and then found that the pressure of the fuel tank on the right wing was slightly high, although it was normal, it was still higher than the left.

Through this slight change, the AI immediately began correlation analysis, and put the summary report on Lei Qing's helmet display:

[Slight deformation of the wing root on the right wing, here the control system fails.]

It is recommended to increase the altitude or decrease the speed to cool the average surface temperature of the body to below 780 degrees Celsius.

In order to protect the body, the throttle valve will be temporarily in a protected state and cannot be adjusted. ］

There is also a flashing antenna symbol below this message, indicating that the relevant information has been sent back to the ground synchronously, and there is no need for Lei Qing to notify it again.

Lei Qing: "......"

Dou Ping: "......"

Anderov: "Who is the supplier of this part of the system?" Where is the inspection report at the time of machine assembly? ”

The skin on the surface of the airframe is the most advanced technology in the base, and Anderov does not think that there will be any problems, only other links.

Dou Ping: "Chief Master An, I'm afraid we still have to solve the problem of the plane first and see what the situation is." ”

"The problem is already obvious! There is a 99.98% probability that the AI's judgment is correct. ”

Anderov, who was a little impatient, directly took out the tablet to read the body data, calculated it for a while, and then frowned:

"Let the plane climb at the minimum elevation angle, with the help of the current speed can rush to more than 60,000 meters, and after a while, the speed and temperature will naturally decrease.

When control is restored, immediately lower the throttle, find a nearby military airfield to land, and no longer risk flying back. ”

Dou Ping wanted to ask a few words, but Anderov had already roared:

"Quickly inform the national military district, it will be approaching the capital in a minute!"

At this time, everyone realized how fast the snow bird was at this time, and immediately rushed to report the notice, and at the same time, Lei Qing also received the solution from the ground and began to prepare to climb.

The tail rudders of the delta wing were deflected at a slight angle, but this was already the limit within the safe range.

Lei Qing quickly manipulated the computer to calculate the climb curve, and then saw the number marked on the map of the route.

At the current rate of climb, the aircraft will reach a peak of 65,000 meters in 410 seconds, with a speed reduced to Mach 6.8 and a skin temperature of around 740 degrees, regaining control.

And at that time he will be in ...... Over the island of Kyushu!

Moreover, he could not maneuver casually, and after Mach 8, the snowbird needed to maintain a specific angle of attack to disperse the pressure and heat when flying.

It's not that it's not maneuverable, but the amplitude is extremely small, and it doesn't deviate too much from the original course.

This was considered a fine problem at the time of design, after all, everyone had the perception that this was a "never shot down" aircraft, and it was reasonable to limit it a little.

But no one expected this to happen, a serious international incident could occur in just a few minutes, Lei Qing had thought about countless emergencies, but he had never considered this.

The desert base also quickly discovered this problem, but they never had such a plan.

After all, as a secret base in the hinterland of the interior, it is difficult to be interfered by external factors except for the peeps of satellites, so where would you expect the current situation.

However, the good news is that the level of the base is high enough, and in a few minutes, the "Snow Bird" may cross the volley of other countries, Dou Ping decisively rushed to the office and picked up the red telephone.

More than a minute later, when the Jingu rocket manufacturing base transported out the latest container containing various parts of the Long March 6A rocket, people outside saw a small white bright spot in the sky in the distance.

As astronauts, they could see at a glance that this must be a vehicle that was passing through the atmosphere at high speed, and some people immediately wondered.

I haven't heard of a space shuttle or spacecraft launch mission in recent days, and I look in the direction...... It doesn't look like a spaceship landing at sea, right?

(End of chapter)