But at this time Zhang Desen also sneered and said:
"May I ask if you are mute? It seems that you are also afraid of General Feng Yucai. That's why you want to kill someone to silence him and hide what happened today, right?"
At this time, Feng Ling'er suddenly shouted loudly and said:
"No matter who he is, if he dares to assassinate me, there is no need to discuss it."
However, the prefect Tan Kaiming said:
"Miss Feng, please calm down."
When Feng Ling'er heard this, she immediately glared at Magistrate Tan Kaiming and asked:
"Are you with them?"
When Zhang Desen heard what Feng Ling'er said, he felt that what he said was a bit redundant, but after thinking about it, he let her go. At this time, Magistrate Tan said:
"Miss Feng is like this. Although your father is General Feng, Uncle Xuan Wei is also very powerful in the court, so I advise the young lady to be wise and protect herself. With your father here, Uncle Xuan Wei will not take any advantage. How are you. But..."
Feng Linger interrupted him, pointed at Zhang Desen and said with a smile:
"You confused officer, you'd better go aside. Let me tell you, this is the famous Master Zhang Desen, the first warrior of Daxing Kingdom. Do you understand?"
Tan Kaiming was stunned, then saluted Zhang Desen and said:
"It turns out that Mr. Zhang is here. Please forgive me for my improper hospitality..."
Other government officials were also frightened and quickly saluted Zhang Desen. Of course, Sun Fu and Sun Jia, the steward of the Sun Mansion, were injured and could not salute. But Wang Jia, who had been silent since then, quickly saluted Zhang Desen and said:
"It turns out to be Mr. Zhang, the number one warrior of my country in Daxing. I have admired his name for a long time. Just now I saw that all your generals are so powerful. I have been wondering, who is that? I admire Mr. Zhang very much, but it is a pity that none of them have the chance to meet him. See."
Seeing everyone saying this, Zhang Desen finally remembered that he had been granted the title of Duke Pingbei by the emperor of Daxing Kingdom, and seemed to be a third-class Duke.
However, Zhang Desen also said modestly at this time:
"Everything is a false name, and we still need to face more difficulties. Now we really have a lot to do, so it's best not to be polite here."
Then, without waiting for his answer, Zhang Desen immediately turned to you, Prefect Tan Kaiming, and said:
"Now I don't have that much time to wait any longer. Do you still want me to arrest you now? Prefect Tan?"
When Tan Kaiming heard this, he was so frightened that he replied with sweating profusely:
"How dare you, how dare you, I was a villain before! Now that I know you are Mr. Zhang, how can I dare to do this?"
Then Magistrate Tan slapped himself in the face and said:
"Everything is the villain's fault. As for the mute family general of the Sun Mansion, the Sun Mansion forced it on me. I don't know his name. I usually call him mute. To be honest, the villain has no choice. Yeah, after all, Hezhou City is within the Sun family’s sphere of influence. Except for the people from the Liu Family Trading Company, there are almost no one who is not afraid of its influence..."
Zhang Desen thought the same thing. After all, the joint generals of the Zhang and Liu Mansion have become famous since the last time they defeated the 800,000-strong army of the Ancient Liao Kingdom. However, Zhang Desen interrupted Magistrate Tan's words with a wave of his hand and continued:
"Okay, listen now. Now that you know my identity, please help me convey my message to the people in the Sun Mansion and that Prince Xuanwei Wangdan. I want them to restrain their families in the future, and I want to remind them in particular. It's this Sun Fu. If I see him again in the future, he will be so evil. I beat him every time I saw him, and the housekeeper will also be taken away. At the same time, he asked them to remember to pay 5 times the compensation for all the losses caused to this restaurant today. As for this mute family I have another use, do you hear clearly?"
Tan Kaiming, the prefect of Hezhou City, immediately kowtowed and begged for mercy and said:
"Yes Yes Yes!!!"
Zhang Desen said again:
"Clean this place and get out!!!"
Then, Magistrate Tan immediately followed what Zhang Desen said and immediately ordered all the government officials to do it one by one. At this time, Zhang Desen immediately planned to pay attention to the mysterious disappearance of people at night.
At this time, Zhang Desen felt a little regretful, because Zhang Desen just forgot to ask Magistrate Tan Kaiming about the various incidents of mysterious disappearances of people at night.
. However, Zhang Desen thought that perhaps asking was in vain, and he might as well just make the arrangements himself first.
Afterwards, Zhang Desen immediately took Li Longfang and Zhao Chengming back to the material reserve outside Liu's Trading Company in order to study and deploy the next action.
But at this moment, Ms. Feng Ling'er and Feng on the side suddenly stopped Zhang Desen and said:
"Zhang Desen! I have helped you so much just now, don't you even have a word of thanks?"
When Zhang Desen heard this, he had to turn his head and said:
"Thank you very much, Miss Feng, for your generous help. But I still have things to do, so I will thank you in the future."
When Feng Linger heard this, she smiled happily and said:
"Okay, then take me with you! I like chivalry the most, so take me with you."
But Zhang Desen didn't expect that Feng Ling'er could change her face so quickly. I had to say to her:
"Miss Feng, you may not be able to help me with this. There are too many things you don't know."
Feng Linger suddenly became very unconvinced and said:
"I know a lot of things. Don't think that you look down on people because you have seen a lot. If you don't believe me, just tell me something and see if I can answer it."
Zhang Desen was a little anxious at this time. After all, it had been delayed for too long, and he had just seen the information from the Orme Empire. I'm afraid something bigger is about to happen, and he is anxious to go back and study these things. Plus those mysterious missing persons incidents. Zhang Desen didn’t want to waste any more time, so he immediately blurted out and asked:
"Then do you know what the black zone is?"
The so-called black barrier area is when space vehicles such as satellites and spacecrafts return to the atmosphere at a very high speed. At a certain altitude, communication with the ground will be interrupted. This area where communication is interrupted is the black barrier area. The black zone generally appears in the atmosphere between 35 and 80 kilometers above the earth.
The parts of rockets and spacecraft that re-enter the atmosphere, such as warheads and re-entry cabins, are called re-entry bodies. The range of the blackout zone depends on the shape, material, re-entry speed of the re-entry body, and the frequency and power of the launch signal. The blackout phenomenon causes difficulties in real-time communication and reentry measurement when the manned spacecraft returns.
How is the black barrier formed? We know that when all aircraft return to the atmosphere, they fly at extremely high speeds, which can reach more than ten to hundreds of times the speed of sound. This creates a strong shock wave at the front end of the aircraft. Due to the compression of the shock wave around the aircraft head and the viscosity of the atmosphere, a large amount of the kinetic energy of high-speed flight is converted into heat energy. When the surface of the aircraft reaches a very high temperature, both the gas and the ablated heat-proof material are ionized.
As a result, a layer of high-temperature ionized matter forms around the aircraft, and the plasma sheath interacts with electromagnetic waves, causing the electromagnetic wave transmission used for communication to attenuate or reflect. At this time, radio communications between the ground and the aircraft are interrupted.
As the altitude of the aircraft decreases, when the speed decreases to a certain level, there is no longer enough temperature to ionize the gas molecules, the plasma sheath is lifted, and the black barrier disappears.
Since the 1950s, people have begun to study black marks and their elimination methods.
On the one hand, the plasma sheath is eliminated or weakened by designing an ideal shape of the reentry body and spraying some kind of plasma-eliminating material;
On the other hand, improve communication and measurement methods and equipment to reduce the impact of the blackout area, for example, increase the frequency and power of the signal, install the antenna at the thinnest position of the plasma sheath, etc. However, these methods can only shorten the signal interruption time, but cannot completely solve the problem of re-entry into the blackout.
Another idea is to use millimeter waves or lasers to penetrate the plasma sheath to solve the problem of reentry communication interruption.
After the spacecraft return capsule returns to the atmosphere, due to aerodynamic heating, the gas close to the surface of the return capsule and the molecules on the surface of the return capsule material are decomposed and ionized, forming a plasma layer.
Since plasma has the ability to absorb and reflect electromagnetic waves, the plasma layer surrounding the return capsule is actually a plasma electromagnetic wave shielding layer.
Therefore, when the return capsule enters the state of being enveloped by plasma, radio signals from outside the cabin cannot enter the cabin, and electrical signals from inside the cabin cannot be transmitted to the outside of the cabin. For a time, communication between the inside and outside of the cabin is lost. This is the black barrier phenomenon. The range of the black barrier depends on the shape and material of the reentry body.
, reentry speed, as well as the frequency and power of the transmitted signal, etc.
The black zone creates difficulties in real-time communication and re-entry measurement when the manned spacecraft re-enters and returns, and there is no good solution yet. Fortunately, the shielding time was very short, and when the black barrier appeared in the return capsule, it was in a normal descent orbit. Without radio measurement and control, the impact was not significant. After only about 4 minutes, the return capsule descended into the dense atmosphere and opened the parachute to decelerate, and the black barrier appeared. can be eliminated.
To completely solve the black barrier problem, we must also look forward to the future development of aerospace technology.
In the black zone, astronauts are most in danger during this period because the return capsule loses communication with the ground control center for a moment, and the friction with the atmosphere will generate temperatures of thousands of degrees Celsius. If heat protection measures are not taken, the astronauts will not be able to withstand it and the structure of the return capsule will be damaged.
In the past, astronauts had no precautions. If the spacecraft burned down here, they would die in the line of duty. Today's astronauts must wear spacesuits to experience this black zone.
Of course, Feng Ling'er definitely doesn't know what the black zone is. At this moment, she suddenly became anxious and stared. He shouted unconvinced:
"You made this up, right? Or, can you find out what it is..."
But at this time, Feng Ling'er's language organization had begun to become chaotic, and she couldn't say anything, so she actually started crying.
This caught Zhang Desen and others off guard.
