As for how long it will be stable, we don't know. However, Lei Tiantang tells Zhu chenjie that they don't have to worry about it. On the one hand, he will arrange Akiyama Yumei to come to the company and upgrade the company's security system again. Then the most important thing is that their stealth coating has been tested! At that time, the military personnel will certainly enhance the security of their company again! In this way, we can ensure that everything is safe!

Since all these spies have been netted out, Lei Tiantang has completely put this matter down. Of course, he also knows that this time is not over, because even after the state has issued a warning, the task of their company on the dark Internet has not been cancelled! Just in order to avoid the attack, changed a website just!

Lei Tiantang doesn't care about them for the time being. If he dares to come again, he will spare time to run a few more times. If he comes again, he won't inform the police. If he doesn't disappear a little bit of scum, such action will not stop. As for those behind the scenes, if they encounter them on the way out in the future, they must be taught a lesson. Being bullied and not fighting back is not his style !

However, he couldn't be busy with this matter at this time. He even pushed back the matter of going to baga country to teach dwarfs a lesson. Because the company's stealth coating research plan has been basically completed, two materials have passed all the laboratory experiments, and now we have to go through actual combat to conduct the final test!

Of course, it is impossible to inform the military at this time. It is necessary to make several UAVs, and then apply stealth coating to test flight several times. Finally, it can be determined which sample to choose as the final product to inform the military personnel.

It's very easy to make a UAV, because Lei Tiantang has come up with a design drawing, which is actually based on the reduced scale system of F22. Of course, Lei Tiantang has made some modifications. After all, there is still a difference between a UAV and a fighter in essence.

Take the design drawing to the old factory of material company. The robot laboratory equipment of cosmos technology company has been basically installed. It is still very easy to make several UAVs with the equipment there.

The most important thing is that there are many technicians who have played model aircraft, so Lei Tiantang will gather these people together to make UAVs.

The process was very happy, and everyone was full of enthusiasm for this matter, because since we came to the company, we are either studying or designing rockets on computers. We have been doing this for a long time and it is a bit boring. This thing just changes our taste.

We are not surprised at the F22 design drawing that Lei Tiantang brought, because the appearance of the whole UAV is the same as that of the F22, and the internal engine and other parts are only high-end UAV accessories. The appearance design drawings of F22 have been available on the Internet for a long time.

as like as two peas, we have made 4 UAVs, which are all identical. They are the same as the final coating. The stealth coating is different. Each of the 2 coatings is made of different kinds of coatings, so the experimental data can also be compared.

At 5:00 p.m., four unmanned aerial vehicles (UAVs) coated with two kinds of stealth coatings stopped on the longest road in the company. The multi frequency radar built by the company's laboratory was also set up, and some other test equipment were also placed on the side of the road one by one.

The reason why the experiment was delayed until the evening was that the autumn tiger was so fierce that the maximum temperature in the daytime reached 40 degrees. For the first experiment, it was better to do the test at room temperature. If the test this afternoon passed, the test at high temperature would be conducted at noon tomorrow.

As they tested large UAVs, they still informed the police, and then the police and the military applied for airspace. They applied for medium and low altitude airspace, and the sky above the industrial park was not the place for civil aviation routes, so the application was quickly approved.

The experiment was carried out in two batches, each time flying two with the same coating. After all the preparations were completed, Zhao Junxian said to Lei Tiantang, who was standing beside him, "boss, you are all ready to fly!"

"Let's start! See how it turns out! For such a long time, I hope there is a good answer! " Lei Tiantang smiles and waves to indicate that it is ready to start. As for the quality of the UAVs, he is not worried. After the manufacture is completed, they have passed several low altitude flight tests, and some minor problems have been solved. Therefore, it is OK to take off directly.

"Attention from all departments! The test officially begins! The plane takes off Zhao Junxian received the consent of Lei Tiantang and arranged the test directly!

Only two gray UAVs ignited at the same time, and then the engine flashed the blue flame on the road for a distance, and then gently jumped up. In less than a minute, they could not be seen on the ground with naked eyes. The people who watched them also withdrew their eyes. Everyone stood in front of each display screen to see their real-time dynamic.

After the instrument shows that the UAV has reached the altitude of 2000 meters, all kinds of testing work has been officially launched. The radar has been scanning the UAV when it takes off, and it can be detected at the initial stage. However, after the UAV rises to the altitude of 2000 meters, and the flight distance is 30 kilometers from the industrial park, the two UAVs disappear from the radar screen Yes!

If the UAV is not equipped with positioning devices, it may be thought that they do not exist. Of course, radar is not scanned by one band. Although the laboratory experts are not specialized in radar, the radar performance modified with high-performance civil radar is still good, especially the radar bought by experts has added a variety of frequency bands for testing There is no problem.UAV pilots control the UAV hovering in the airspace between 2000 m and 3000 m, controlling their distance from the radar. After nearly one hour test, it is found that only when the UAV is within 30 km from the radar, the radar can detect them!

This data has been very amazing! According to the public information, the radar detection distance of stealth fighters in various countries is basically between 100 km and 200 km. In this way, the stealth coating made by our company can actually reduce this range to 30 km. It is estimated that even the most advanced stealth fighters in various countries can not reach this figure!

Of course, the data they are testing now can only be a rough figure. One reason is that the radar they are testing is refitted for civilian use, and its performance must be quite different from that of the military radar. Moreover, the size of the UAV used in the test is not comparable to that of the real fighter. Therefore, the final data still needs to be coated on the private fighter plane for testing With!

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