Invisible in the sight of the eyes, this is only seen in those science fiction movies, whether it is the people on the fishing boat, or the people on the destroyer of the island country, although there is a wonder if the Celestial Empire already has such an advanced stealth technology of the fighter, but it is just a thought, after all, such a technique is at least a few decades ahead of today, they don't think that the Celestial Empire has the ability to develop it.

No matter how they guess, in a short period of time, outsiders will definitely not know that the "Shadow Dragon No. 1" has such a function, because at the beginning, this technology of the drone has always been in a top secret state, even if it is not long after, the drone officially faces the eyes of the people of the world, this function will be kept secret.

Xu Ziling, who is controlling the return of the drone, is now in an extremely good mood.

Sweep away the frustration of months of exhaustion due to busyness, and the fact that the Middle East region has not tracked down the news of the ambush of the Sword Squad.

Recently, the Celestial Empire marked the flight identification zone in the East China Sea, and soon after the issuance of this order, the Mi army and the island nation announced at the same time that they did not recognize it, so they arrogantly sent fighter planes to fly in this airspace.

At that time, the drone had not yet come out, and in the face of these two countries, the Celestial Empire did not have the ability to deal with it at the same time, so it could only watch these guys arrogant there.

Being able to get two F-15s today can be regarded as revenge for the depression that has been depressed during this time.

I wonder if the people of the island countries will think that they have seen ghosts?

Thinking of the suspicious ghosts they heard but didn't see the fighter, Xu Ziling gloated.

"What happened today will be classified as top secret. You stinky boys remember to keep your mouth shut, even the closest people around you can't say it, do you know it? ”

If the matter is leaked, it is not just that the island country will find trouble, but once this sharp killing weapon is made public, think about it, you will know how many countries will face the respective means of the Dao, even if the Dao is young

Among the generations of people, they are either soldiers themselves or have an inextricable relationship with the military department, and they will understand this, but Yang Haisheng still told Lin Jianbin and Liu Long very seriously once.

"yes, I see."

"I know it."

Although they are still young, the environment they are in makes them know how powerful they are, and they are not disgusted by Yang Haisheng's strictness, and they respond honestly one by one.

"I can't say it now, but when you get old, it's a kind of pride to talk about it in front of your children and grandchildren, but if you think about it, we old guys, I guess we don't have this opportunity."

Huang Lao looked at them and said with a smile.

Not being able to say such a face-raising thing, just like having happiness in your heart but not being able to share it with others, is indeed a depressing thing.

With such feelings, several people felt a little uncomfortable in their hearts, but after listening to Huang Lao's words, everyone's eyes immediately lit up, and they felt that this idea was really good.

Think about what kind of scene it would be when you are old and full of children and grandchildren, and you can tell the miracles you have witnessed in front of your descendants?

"Huh...... It's not true that you are old, you are only in your sixtieth year this year, and this kind of thing is estimated to be declassified in thirty years, and you can talk about it in front of your great-grandson at that time. ”

Xu Ziling listened on the side and took over the conversation.

"Hehe......"

"Ziling is really right."

As soon as his words came out, everyone smiled and nodded yes.

"When you kid said that, it's really possible, it seems that I must live until that time for this glory."

Huang Lao felt that this was really the case, and now his physical condition was not bad, and it might be no problem to live until then.

"Looks like we old guys still have to try to stay alive."

Li Lao also laughed and joked.

~~~~~~~~~~~~

Dozens of minutes later, the drone returned.

As soon as they entered the hangar, numerous ground crews began to conduct a comprehensive inspection of the aircraft.

Because Xu Ziling still had to communicate with Captain Zhang about what happened, everyone didn't greet him anymore, and if there was something to do, he went to the hangar to see the drone.

Until the evening, all the staff had a dinner in the cafeteria of the military factory to celebrate the completion of the test of the drone.

The test was completed, but during this time, Xu Ziling had other things in his hands, and he didn't get the weapons of the drone himself, but let the lion come up with a plan and hand it over to the people below.

The thing that kept him busy was the "Flying Eagle" fighter project.

The "Flying Eagle" fighter is an optimized scheme from the F-22, and in appearance, it is not much different from the appearance of the F-22.

It is also a double-vertical tail twin-engine single-seat layout, which is different from the original one in that its vertical tail is not inclined outward by 27 degrees, but has been slightly reduced, making its stealth effect better.

The air intakes are the same as the original, distributed on both sides of the wings under the leading edge extension, but the stealth design of the infrared radiation suppression shè has been improved, and the main wing and the back of the fuselage use the same sweep angle and trailing edge sweep angle, both of which are trapezoidal planar shapes with small aspect ratios.

The other is the cockpit, a new high-strength transparent material made of teardrop-shaped canopy protruding from the upper part of the front fuselage, which is more aerodynamic than the F-22's own cockpit design, as well as more safe, comfortable and stealthy.

On the "Flying Eagle", it is worth mentioning that the tail nozzle, double engine and two tail nozzles, is made of the latest tungsten alloy material, different from the general fighter nozzle as much as possible to hide the design method, it is the opposite, the long bare nozzle behind the fuselage.

The reason why the tail nozzle is designed like this is because it can make it move perfectly, yes, let the tail nozzle move.

Unlike ordinary fighters, the nozzle is generally inactive, but on the "Flying Eagle", the tail nozzle can perfectly rotate 360 degrees from the front.

This design uses a new thrust vectoring technology, which uses the perfect change direction of the vector tail nozzle to control the reverse thrust generated by the different directions of the jet air flow when the engine is working, so as to quickly change the direction of the aircraft, thereby greatly increasing the maneuverability of the aircraft.

But such a design has a big problem for others, that is, the stealth ability of the tail nozzle.

The tail nozzle of a fighter is different from that of a passenger aircraft, because of the bypass ratio, when the tail nozzle of a fighter plane is flying, at least half of the air flow from the engine is a blazing flame from the combustion chamber.

This flame carries an absolute high temperature, which is simply in front of people's eyes for infrared, thermal detection and other radars, and there is no stealth material in the world today that can reach this high temperature.

But because of the lion, this problem is not a problem here.

Not to mention that there are related invisible materials in its system, it is the complete machine solution that contains the formula and production process of this material.

Although the production process is relatively advanced, it is still no problem to work hard and mass production.

In the past few months, Xu Ziling has been busy with the "Flying Eagle" project in addition to the drone thing.

According to the data in the plan, the "Flying Eagle" fighter has a total length of 18 meters, a wing length of 13 meters, a height of 5 meters, an empty load of 15 tons, and a maximum take-off weight of 45 tons.

In terms of speed, it can reach a maximum speed of Mach 3.5, and the range can fly 4,000 kilometers without auxiliary fuel tanks when the aircraft is empty, and the combat radius is 1,500 kilometers with a full load.

However, due to the application of vertical take-off and landing techniques, the "Flying Eagle" fighter can land and refuel at any airport, which greatly increases its combat mobility.

Originally, according to Xu Ziling's idea, he just wanted to come up with a completely new carrier-based fighter, but according to the data of the "Flying Eagle" fighter, it can already be called a multi-purpose fighter.

Although the stealth xìng can not be compared with the "Shadow Dragon" drone, it can definitely ensure that the Mi fighter will not be discovered 20 kilometers away.

The maximum take-off weight of 45 tons means that it can carry a large number of missiles to bomb targets like a bomber.

In addition, the upgraded version of the "Eagle Eye System" has the functions of reconnaissance and electronic warfare, which can shield the electronic signals of the place in a wide range and at the same time, it can also detect the enemy's ground intelligence.

Sometimes Xu Ziling also thinks that once this model comes out, it is estimated that no fighter will be its opponent.

Imagining the rìzi of the sky dominating, he was looking forward to it.

On this day, he was working on some things about the "Flying Eagle" project in the laboratory when the phone rang suddenly.

"What? How could such a thing happen? ”

Picking up the phone, the news he got made him exclaim.

The phone call was made by his father, Xu Haoran, who told him a shocking news: there was a leak in the technical exchange department, which had only been established for a few months, and all the relevant technical materials had been copied.

"Did anyone catch it?"

"No, the person is a person in charge sent by the ** research institute, and when the technical personnel found out that the data had been copied, it had been several hours since the incident happened, and the other party had already left the country."

"Oh, I'll talk about it later."

On the phone, Xu Ziling didn't want to say more, so he quickly hung up the phone, left the laboratory, and went to Xu Haoran's office.

The technical information was leaked, he was not in a hurry, firstly, although some of those techniques were ahead of today's level, he had better ones in his hands, and he was not worried that the outflow of techniques would have too much impact on himself and the country.

Second, he also has a backhand. At that time, he took into account the problem of leaking secrets, and although he was not in charge of the management here, he carried a very small procedure in the materials he handed over.

The function of this program is to verify the user's identity ID and dedicated computer when the data is opened, and once the data is run on another computer, then it will all become a bunch of garbled characters.

At that time, when the institution was established, the relevant security means required that each research institute must have a special computer, presumably the person in charge of the defection was only a simple means, thinking that it could be cracked, if he tried to open it on other phones, he would know that no matter what method was used to crack it, it would not be successful.