Chapter 56 Person in charge

Stealth fighters are not as invisible as people imagine, like invisibility cloaks.

The real principle is actually very simple. The basic principle is to prevent radar detection from detecting the existence of the aircraft. A radar detection cannot detect 360 degrees without blind spots. The length of the radar line may change due to various factors.

"The reason why I said not to study the long-distance launch is because we have better and more economical ones. Why not choose the latter?"

Shen Sangyu said, and turned around again to write and draw on the blackboard.

She briefly drew the position of the earth and the position of the radar on the blackboard. She was not sure what the current radar scanning distance was, so she simply made a distance.

Qin Duanshan stared at Shen Sangyu's drawing without blinking, and his eyes suddenly lit up after the drawing was finished.

He said, "Go on."

Shen Sangyu nodded and said, "First of all, everyone is familiar with the term invisibility. Maxwell had already proposed it more than ten years ago. In my words, what we have to do is not only the aircraft, but also how to make it invisible to radar and the coating needed to make the outer layer of the aircraft."

Shen Sangyu talked freely in front of them. The eyes of the people changed from enthusiasm at first to fear, and finally they even took out their work notebooks to record.

Because they didn't understand many of the things Shen Sangyu said.

Shen Sangyu didn't intend to make everyone understand at once. After all, what she said was the essence and theory summarized by aerospace scientists around the world in the next few decades.

She picked and chose some of the materials that were available at present, but even so, she talked for several hours.

Qin Duanshan's assistant saw this and immediately went to boil some hot water and kept adding water to everyone's cups.

While Shen Sangyu was lecturing, no one went to the restroom, and everyone listened intently.

Shen Sangyu was tireless when it came to working hours, and he didn't know how much water he drank after the talk, but even so, his mouth was still dry and his throat was slightly sore. After a

pause, Shen Sangyu glanced at his watch, it was already four o'clock in the morning.

Looking at Qin Duanshan and the others again, no one had a tired look in their eyes, and those eyes full of desire for knowledge kept looking at him.

Shen Sangyu gritted her teeth and talked for two more hours. Finally, she couldn't hold on any longer. After hesitating for a moment, she said to Qin Duanshan, who was still immersed in the huge knowledge shock and hadn't reacted yet: "We have talked about almost everything today. Why don't you take a break first?"

In fact, people who do scientific research are somewhat miserable. The original owner's health was not very good in this life. She stayed up all night and her mind was confused. If it was in her previous life, once she had done important research, she would not stop for three days and three nights.

Shen Sangyu sighed and thought that it was no use now. Now she could hardly lift her eyelids.

If she fell asleep on the ground while talking, how embarrassing it would be!

However, Qin Duanshan did not react. Shen Sangyu weakly called out twice again.

Qin Duanshan reacted belatedly.

Subconsciously, he glanced at Shen Sangyu's pale face, stood up and said, "Okay, thank you for your hard work today. Let's talk about other things tonight... no, let's talk about other things at noon today."

Shen Sangyu: "..."

It was already six o'clock in the morning, and she could only sleep for six hours at most.

She had never slept so short since she traveled through time.

But these six hours of rest time are very luxurious for those who do scientific research. After all, they sometimes have to watch the data all night, because the data may change in the next second, so there is no way to entertain themselves.

Shen Sangyu cheered up and nodded.

Qin Duanshan personally took Shen Sangyu to the resting place. He mainly wanted to ask a lot of things, but Shen Sangyu made it clear that she didn't want to say anything, and Qin Duanshan didn't ask anything.

After walking out of the laboratory, Shen Sangyu suddenly paused: "Teacher Qin, can I call the military district to report that I'm safe?"

Their research was not a top-secret project, so Qin Duanshan pointed to the office.

Shen Sangyu did not forget to call Wen Qingchuan, so she quickly dialed the number, and soon someone went to ask Wen Qingchuan to answer the phone.

Not long after, a slightly breathless male voice came from the other end of the phone: "Sangyu, it's me, am I safe?"

When Shen Sangyu heard this voice, she suddenly felt as if her empty heart was filled. She hummed lightly and told the story again, which did not involve confidential content.

"In short, I have to help Teacher Qin deal with things before I can go home, so I may be delayed a little bit than originally planned."

Wen Qingchuan is not like other men who think it is not good for women to go out and show their faces. He even heard that Shen Sangyu was very good at studying airplanes.

"Then you should pay attention to rest more. Can you handle your work and study well? And do you need money? I saw that you didn't bring the passbook in your room..."

Wen Qingchuan didn't talk much in the past, but when he heard that Shen Sangyu's return date was uncertain, he couldn't help but worry. After all, he had been personally managing Shen Sangyu's daily life for the past few months.

Shen Sangyu didn't interrupt Wen Qingchuan, and she answered whatever the other party said.

"Don't worry, I just want to stay for a few more days, Teacher Qin and the others will handle the rest by themselves, and my uncles and aunts only taught me so much before, and I will get the knowledge back after being drained. As for the money... the institute should provide food and accommodation, right?"

Shen Sangyu said, and couldn't help looking up at Qin Duanshan.

Qin Duanshan's mouth twitched, but he still nodded: "Food and accommodation are provided."

Shen Sangyu breathed a sigh of relief. Although she had a spirit of selfless dedication, at least she couldn't pay for it herself.

"Did you hear that? Food and accommodation are provided, so don't worry." Shen Sangyu said while holding the phone.

Wen Qingchuan smiled, gave a few more instructions, and then hung up the phone.

Shen Sangyu saw that there was no sound, so she put the phone back.

Qin Duanshan heard it clearly and couldn't help but sigh: "Your husband cares about you very much."

Shen Sangyu nodded: "Indeed, he is very tolerant of me."

Whether it was the original owner or herself, Wen Qingchuan didn't complain about not cooking, not working, or even cleaning the room.

Every evening after training, she came back tired and hungry and had to do it herself.

Although she didn't have to do these things, at least compared to the family compound, Wen Qingchuan was simply miserable.

Of course, she is not doing nothing. Forget cooking. She will still clean when she has time.

Qin Duanshan looked at Shen Sangyu without saying much. He took Shen Sangyu back to the rest area. The assistant also brought the food at this time.

"You take a rest first. When the time comes, someone will knock on the door. We will have a meeting after you wake up."

Shen Sangyu was stunned for a moment: "Meeting?"

Qin Duanshan smiled and nodded: "Yes, you can be said to be half the person in charge of the invisible fighter now!"

Shen Sangyu: "!!!"

"Do you mean that this is your next research direction?"