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How could Feng Xiaotian know about the stealth fighter in the Dao? As he said, it is true that it looks at the news, but he does not look at domestic news, but foreign news.

When Feng Xiaotian first landed on the Internet at the end of the Gulf War, Iraq's defeat was a foregone conclusion, and the US media reported on this just war, which inevitably boasted about the high-tech military equipment of the United States, and one report was about the F-117 stealth bomber.

According to this report, the F-117 is currently the most powerful bomber in the world, and it can invade the airspace of other countries at will without being discovered, and the United States has the F-117, and immediately threw off its old rival the Soviet Union for 108,000 miles. As for the USSR, I guess there is nothing to be afraid of anymore - what? You say there is still Huaguo? I'm sorry, but I didn't know there was still this country in the Dao world. ”

Feng Xiaotian, as a Chinese, immediately became angry after seeing this report, originally, the United States and the Soviet Union fought and abused each other, why should China be involved? Isn't this typical nobody? Feng Xiaotian was not in a good mood, so he searched for the relevant information of the F-117 fighter, although he could not find the details of the fighter, but even through the road news of the mass media, he also roughly knew what was going on with this kind of aircraft.

To tell the truth, at first he thought that the F-117 was so stylish, how amazing, and the stealth fighter sounded incredible, but when he analyzed the information he searched, he couldn't help laughing - what invisibility, it's about to blow into the sky! Isn't it possible to reduce the radar cross-section, thereby minimizing the airframe on the radar? What's so hard about dealing with such aircraft?

Feng Xiaotian had already thought of a way to deal with it at that time, but he didn't say anything, and then he had an encounter with Troy, so he naturally forgot about it, and it wasn't until today that he saw the information in Wang Jianguo's hand that he remembered this stubble.

Wang Jianguo looked a little surprised at the moment, because he saw Feng Xiaotian's expression of indifference, usually only when a person has considerable self-confidence will show this expression, stunned for a moment, Wang Jianguo said: "Xiaotian, you better say your own point of view first, even if it is not right, it doesn't matter." ”

Wang Jianguo still doesn't believe in Feng Xiaotian, after all, Feng Xiaotian is a teenager, he is only a freshman in high school this year, and hearing about stealth fighters can only mean that he pays more attention to the news, but to say that he can think of a way to crack the stealth technique, this is a bit fantastical, as a national senior researcher, he has not achieved any decent results in research for more than two months, and he can't solve this problem with a child, right?

Feng Xiaotian saw Wang Jianguo's expression, and also knew what he thought in his heart, but he didn't feel any unpleasantness because of this, Wang Jianguo helped him a lot, and he was a national senior researcher, it was already very good for people to talk to him so politely, otherwise who would discuss such a cutting-edge issue with a child?

Feng Xiaotian smiled slightly and said, "Uncle, the stealth fighter is stealth by reducing the radar reflective surface, right?" ”

Wang Jianguo nodded when he heard this, this news is also reported, it is not an uncommon thing, Feng Xiaotian looked at him and nodded, and then said: "If you want to deal with the stealth fighter, the most important thing is to be able to find it in time, so that it has nothing to hide, and it can attack it, Uncle Wang, is this the case?" ”

Wang Jianguoxin said: Isn't this nonsense? That's what I'm working on right now, can you get straight to the point?

Although Wang Jianguo thought so in his heart, he smiled on his face: "Yes, but it is not very simple to find it in time, its radar reflecting surface is too small, and it is easy to be ignored." ”

Feng Xiaotian smiled slightly, and then said something like this: "The radar reflective surface we just discussed is only relative to a single radar, if multiple radars are used to target it at the same time, what do you think the result will be?" ”

In the face of a single radar, the stealth fighter can refract and absorb radar waves very well, but after all, there will still be radar waves escaping from the radar, if these escaping radar waves are received by other radars, then the cross-section of the stealth fighter will become very large, at least much larger than the radar reflective surface of a bird, so that it will not be discovered?

This truth can be described by an ancient poem: "Horizontal view into the side of the ridge into a peak", two people standing at different angles to see the same thing, they see the shape is different, just like a mirror, if you face it, you can intuitively know its area, but if you stand on its side, you only see its thickness, in this way, the area you see the mirror is not much smaller? Of course, if you want to talk about spheres, you don't need to talk about it, and the stealth fighter is not a sphere, so it's not appropriate to do it, right?

The working principle of the radar is similar, it is by emitting infrared rays, and receiving the infrared rays reflected back by the object to judge the size of this thing, there are many refractive surfaces on the stealth fighter, and special materials are used, which can minimize the infrared rays fed back to the radar, if a radar emits 100 units of infrared, it may be absorbed and refracted by the stealth fighter itself, and only 1 unit is fed back in the end, which also forms its stealth function.

Feng Xiaotian said that the use of multiple radar detection, in fact, is to intercept the infrared rays that are refracted by the stealth fighter, which can detect the stealth fighter from all angles, as long as these data are integrated together, you can get a three-dimensional image of the stealth fighter, so of course it has nothing to hide!

Wang Jianguo immediately fell into contemplation when he heard this, he had been studying this project for more than two months, and naturally understood what Feng Xiaotian meant, but after a while, his eyes lit up and said: "If several radars work together, then the stealth effect of the stealth fighter will be greatly reduced!" In this way, its biggest advantage will also disappear! ”

After Wang Jianguo said this, he couldn't help but get up and walk around the living room, at this moment he was already too excited, originally he thought of the way to crack the stealth technique by improving the performance of the radar, but it is very difficult to do this, after all, the country does not have an advantage in this regard, if it really develops in this direction, I am afraid that I don't know that the road will have to wait until the year of the monkey! Well, now, after Feng Xiaotian's reminder, he immediately found another broad road!

In fact, sometimes the solution to the problem is very simple, but it is easy to be ignored, Wang Jianguo is just limited by inertial thinking, if he can think about the problem from a different angle like Feng Xiaotian, I am afraid that he will not have studied for more than two months without achieving any results.

Feng Xiaotian looked at Wang Jianguo, who was excited, and felt very happy in his heart, he finally repaid Wang Jianguo's favor, so that he could be more down-to-earth, after all, it doesn't feel very good to owe people something.