The flight time from the capital to St. Petersburg is about seven and a half hours.

Compared to those more than 20-hour flights, the seven-and-a-half-hour flight is quite boring.

It's not easy to sleep on the plane without jet lag, and most of the time you can only sit boringly.

Idle, Xu Chuan took out his notebook from his backpack, sorted it out on the computer against the photos he had taken and recorded before, and studied the key to solving this problem by the way.

Magnetic confinement plasma processing technology is a theoretically feasible path, but there are not many core difficulties to be solved after the realization of controlled nuclear fusion technology.

One of the main core problems is the damage and property change caused by high-energy heavy particles during cutting.

If this problem can be solved, then there is a great possibility that this technology will be realized.

It may not be possible to apply it in a short period of time, but it points the way to the future of ultra-high-precision machining technology.

In fact, for the development of science and technology, whether it is the maturity of theory or the maturity of technology, it can more or less drive the development of science and technology in other fields to a certain extent.

Just like the birth of the first steam engine, it promoted the development of more than just the field of transportation such as trains, automobiles, and ships, which people are accustomed to.

There are also textiles, food, medicine, electricity, mining, chemicals. And so on, many other areas that don't seem to have much to do with each other have followed with a major change.

Controlled nuclear fusion technology is not only bringing changes in the energy field, but also with the maturity of ultra-high temperature plasma heating and control technologies, many related industries also have the opportunity to change together.

On a flight to St. Petersburg, Russia, Xu Chuan researched magnetic confinement plasma processing technology.

At the same time, in the far western frontier territory, close to the border between Kazakhstan and Tsarist Russia, military vehicles are passing through the desert, intensively preparing for the upcoming exercises.

Nominally, this exercise is a game, but the military equipment, numbers, weapons, and scale used are far beyond the scale of counter-terrorism.

After all, what kind of exercise game have you ever seen that requires the use of 51 strategic intercontinental missiles, H20 strategic stealth bombers, J20 fighters, hundreds of tanks, and countless other weapons and equipment?

An exercise of this scale, let alone counter-terrorism, is enough to destroy a country, regardless of the top countries such as the P5.

Although they have long submitted formal notices to neighboring countries that this is just an ordinary internal counterterrorism exercise, the sheer scale and few inland exercises still attract the attention of many other countries.

Not only the United States on the other side of the Atlantic, but many other countries are also watching this operation.

For them, this is a good opportunity to understand the power of that great power.

And for Huaguo, this is also an opportunity to flex his muscles.

Exercises are also part of strategic deterrence.

While the exercises in the border area were underway, North Mi on the other side of the Atlantic sphere was in the middle of the long night.

In the early hours of the morning, the Pentagon would be brightly lit, and the staff who came and went would be like a wind-up mechanism, turning at high speed but nervously.

The reason for all this is none other than the "exercise" that is taking place at this moment, which is taking place tens of thousands of kilometers away.

In a conference room in the heart of the building, satellite images are constantly being projected on screens that fill the entire wall.

In order to understand the strength of that opponent, they deployed more than double-digit military satellites in the low-earth orbit of the exercise site in order to capture the clearest and most detailed images.

On the screen, the drill team aimed at the imaginary enemy is advancing towards the depths of the desert in an orderly manner. The light of the fire that streaked across the sky, although it was only a glimpse on the surveillance screen, the mess in the distant hit area and the mushroom cloud rising in the sky were clearly visible.

Looking at the video on the surveillance screen, looking at the mushroom cloud rising on the surveillance screen, the communication sound in the core conference room kept ringing.

The director of the C.I.A. opened his mouth, but stopped talking.

Is this a drill game, where ICBMs are used?

What needs to be bombed with ICBMs?

Staring at the surveillance screen, an expert in the military field of the Pentagon frowned a little puzzled after watching it for a while, and after thinking for a while, he suddenly woke up and shouted quickly:

"The picture of the T4 screen is called up to the optical satellite system for replay!"

Hearing the sound, the staff in charge of playback confirmed that the instructions were correct, and manually played back the screen screen.

There is nothing special about the surveillance footage, everything is normal, and just when everyone is wondering what the military expert is pumping, the optical satellite system shows an abnormal situation.

A fighter jet, quickly passing through the surveillance footage.

Seeing this scene, everyone in the conference room was stunned for a moment.

What the heck?

Optical satellites have surveillance warplanes passing by, but their state-of-the-art synthetic aperture radar imaging satellites are not seeing anything?

"It's . A new generation of stealth fighters? ”

Looking at the fighter plane that quickly crossed the sky on the surveillance screen, the Pentagon's defense secretary opened his mouth and said in a tone of disbelief.

What puzzled him was that, judging from the satellite surveillance footage, he was familiar with this figure that swept through optical surveillance, and it looked almost exactly the same as the J20 of that country.

However, how could the J20 achieve a level that even their state-of-the-art synthetic aperture radar satellites could not monitor?

Not to mention the J20, even their own state-of-the-art B-21s can't escape the surveillance of synthetic aperture radar satellites.

After all, no matter how advanced the fuselage angle or the stealth coating is, the monitoring of radar waves can always feedback something back, even if the band of feedback is less, it can always be reflected in the monitoring.

In particular, their SAR3-B imaging radar system uses the most advanced multi-segment microwave radar detection technology, even if it is their own B21, it can leave some traces on this system, so as to make early warning judgments.

But as it is now, it is directly ignored by the entire SAR3-B imaging radar system, and in terms of stealth, this can be said to be the pinnacle.

And more importantly, the current picture is satellite radar monitoring, and the area it illuminates is the back of the entire fighter, covering a much larger area than the front.

For a stealth fighter, its stealth effect is different in different parts, different detection angles and signals are different.

Under normal circumstances, the stealth effect on the front of the fighter is the best, just like their B21, the radar reflection cross section on the front is only the size of a bird, which is extremely easy to be ignored by radar.

But these areas such as the sides, back, bottom, tail, etc., do not do this level.

When satellites can determine that there will be fighter planes flying over this area, even their B21s will not be able to escape surveillance.

Now, however, the J20 of the country on the other side is like a ghost, invisible from the high altitude of the satellite.

If it weren't for the high-precision optical imaging monitoring system, I'm afraid they wouldn't have been able to see the plane.

How exactly is this done?