[Please keep in mind the domain name of this site " ", or search in Baidu: Sanlian Literature Network] Before dinner, Fan Wuxian went to the scene to take a look again, and expressed his condolences to Maximus and Harry Ford and others who stuck to their jobs, of course, this time they did not send checks to everyone.

Lao Tzu is not a big head, when you pay money, you always have to pay for it, now that the goal has been achieved, there is no need to be extravagant and wasteful, after all, my money is not easy to come by.

Fan Wuxian circled the satellite twice, and this time everyone felt a lot better about him, after all, the saying is good, eating people is the softest, that person's hands are short, and foreigners also recognize this set.

Even this time, Harry Ford not only showed him the effect of the special satellite surface paint printed on the real thing, but also asked him to change into a set of staff clothes and personally went up to touch his satellite.

Although there was still a layer of gloves, Fan Wuxian finally touched his satellite, feeling hard, a little cold, originally Fan Wuxian wanted to stretch out two fingers and knock on it, listen to the sound, Harry Ford hurriedly stopped him.

"Fan, this is not a watermelon!" Maximus also broke out in a cold sweat.

Needless to say, whether Fan Wuji's finger flicking magic will cause permanent damage to the physical structure of the satellite surface, just from the technical content of the satellite surface, this is definitely not as simple as a thin steel plate.

For example, electrostatic treatment of satellite surfaces is a small but important project, and in the early days of space technology research, many scientists had already predicted surface potentials in rockets and low-orbit satellites to be between a few tenths of a volt and a few volts. However, it is estimated that this low surface potential will not adversely affect the normal operation of the satellite.

In fact, until the end of the sixties, most scientists and engineers denied the possibility that the space environment could cause the surface of a satellite to charge and even cause damage to the satellite. But by the early seventies, anomalies occurred on a number of American satellites in synchronous orbit.

In order to explain the cause of this anomaly, a lot of research and experimental work has been done abroad, and it was not until 1972 that scientists continuously observed the appearance of satellite anomalies and magnetospheric substorms. Accurate connections in time and space led to the conclusion that the space environment, in particular magnetospheric substorms, could charge the surface of satellites to thousands to tens of thousands of volts.

Speak like this. There is a targeted treatment, so in terms of satellite surface materials and related equipment structure, Hughes Company has put a lot of effort into it, how dare Fan Wuxi play like a watermelon with such a fine thing?

Fan Wuxian smiled and said, "I thought this thing should be very strong." ”

Maximos didn't dare to let Fan Wuxi mess around here anymore, so he immediately took off Fan Wuxi's work clothes. He was then pushed outside and ordered to observe him only from a distance of twenty meters.

An observation of an "employee" who was assigned to Fan Wuxi's subordinates came to an end at this time, and when he saw the scene just now, he couldn't help but smile and said to Fan Wuxi, "The satellite is a relatively fragile thing, especially its surface, not only has to withstand the test of high and low temperatures with a huge difference, but also has to face the blow of cosmic dust that may come suddenly. While we have all used various methods to avoid this kind of harm, objectively speaking, to a large extent, it all depends on luck. ”

"Oh, I know that." As soon as Fan Wuxian heard what this expert said, he remembered the newsletter he had seen before.

The biggest natural enemy of communication satellites. Not necessarily cosmic dust, but space junk.

Since the former Soviet Union launched its first artificial satellite in October 1957, more than 5,000 launches have been carried out around the world, and tens of thousands of tons of man-made objects have been sent into space.

The largest source of space junk is rocket debris stuck in orbit. In the process of launching a satellite into orbit. The rocket body of the launch vehicle will be dragged away in stages, and the first and second stages will quickly return to the ground under the action of the earth's gravity. The third stage, after putting the spacecraft into a predetermined orbit, may float in space for a long time along with small items such as blasting bolts and ejection springs produced during separation.

The large size of the rocket body and the fact that the wreckage is relatively easy to monitor, so it can be prevented before it happens. But the problem is that they themselves could collide, burst or disintegrate in space, producing millions of offspring of debris and causing even more trouble.

According to statistics, among the space collisions in history, the most prominent is the Ariane rocket wreckage. In 1986, the Ariane rocket exploded shortly after it entered orbit, releasing a large amount of wreckage and small debris. Later, in the process of orbiting the earth, these wrecks and small fragments caused the death of two Japanese communications satellites and one French satellite.

The expert nodded to Fan Wuxian and said, "Abandoned spacecraft are also an important source of space junk. More than 5,000 spacecraft have been sent into space, and only about 800 are still in working order. Although most spacecraft will fall into the atmosphere and burn up under the action of atmospheric drag. However, after reaching the end of their working life, spacecraft with higher orbits lose control and wander aimlessly in space, and these abandoned spacecraft may also explode and disintegrate due to collisions, aging structures, and ruptured fuel tanks, resulting in more debris. Of course, space junk generated by spacecraft can also be caused by human actions, such as the United States and the Soviet Union conducted more than a dozen space weapon experiments in the 70s and 80s, destroying dozens of target stars and generating a large amount of space junk.

In addition, astronauts can also throw away or accidentally lose some things when they work in space, resulting in space junk. For example, in 1965, Ed White, an astronaut of the Gemini 4 spacecraft, lost a glove during a spacewalk. Presently. Astronauts have been forbidden to abandon solid objects in space. ”

Fan Wuxian touched his nose and smiled bitterly, "All in all, the satellite I bought for hundreds of millions of dollars is destined to become a pile of space junk." ”

The expert laughed, "Smaller space junk can cause potholes and scars on the surface of the spacecraft, serious can cause induction discharge of internal sensitive components, and larger ones can cause structural damage to the spacecraft." Of course. The degree of damage is related to the location of the collision, the characteristics of the system design, and the protective measures adopted. ”

Maximos pouted on the sidelines, "Our Hughes products. Basically, they can last until the end of the design life, which can be confirmed by previous data. If it's not bad luck, I guarantee that your satellite will last for fifteen years. ”

Fan Wuxian shook his head and said, "This kind of painless assurance has no practical significance for me. In general, though, what are the chances of a satellite being hit? I really don't want to be reimbursed for hundreds of millions of dollars before I hear a sound. ”

The expert thought for a moment and said. "According to relevant data, the probability of a catastrophic collision event for each spacecraft in space orbit is about 3 percent, and the probability of a non-catastrophic collision event is as high as 20 percent. Therefore, the chance of your satellite being hit is also very large, especially the Hughes company's communication satellites are relatively large, and the target is obvious. ”

"Uh-" Fan stroked his forehead in pain.

Anyone who hears that the satellites he bought for hundreds of millions of dollars may be smashed into a pile of garbage, his heart will not be very happy. Especially an upstart who bought three satellites.

However, he didn't wait for Fan Wuxi to feel sorry for himself here for a long time, He Yun ran over, and his face didn't seem to be very good-looking.

"What's wrong with you?" Fan Wuxi immediately noticed that something was wrong, so he asked in a low voice.

He Yun shook his head and motioned for him to speak in a different place.

So Fan Wuxian followed He Yun out of the scene, and the two of them returned to the small conference room.

Fan was found to be disease-free. There were double posts outside the door, and when I entered the room, I saw that the executives of the base had arrived, all of them had serious expressions, and the atmosphere was extremely tense.

Because he is a big customer, Fan Wuxi's seat is arranged in a very prominent position, which makes Fan Wuxian very proud, because he is surrounded by stars shining and a golden light, but everyone present has a solemn expression, which makes Fan Wuxian feel very uncomfortable.

And He Yun is not qualified to sit down. She could only stand behind Fan Wuxi. It's an entourage, but it's actually for her. It is already a great honor to be able to participate in this kind of meeting attended at the lowest level of major general, you must know that although her current military rank is not low, she is limited to her age, and she is only a major, and she does not have this kind of opportunity in normal times.

Fan Wuxian looked east and west, and suddenly found a problem, that is, the base commander and He Yun still looked a little similar, and couldn't help but be a little curious, could it be that they were relatives? When he looked back, he found that He Yun was standing like that, and he was a little embarrassed, so he moved his ass half out, and then patted half of the empty chair, and motioned to He Yun to let her sit down next to him.

He Yun was made to laugh and cry by Fan Wuxi's general expression as a primary school student, and shook his head with a smile, in fact, it was not that he couldn't find a chair, but in this kind of occasion, he really didn't have the qualifications to sit by himself.

However, Fan Wuxian was able to make this gesture, He Yundi still felt warm in his heart, although this guy occasionally looked like an upstart, he knew how to sympathize with his subordinates.

Well, now, he can be regarded as his subordinate.

In fact, everyone is more interested in Fan Wuxi, many people are secretly looking at this young man's ambition super-rich, especially when I heard that this guy got rid of Du Pengfei, the most promising lieutenant colonel in the base, as soon as he came over, and the collapse of Lieutenant General Han Zhizhong seems to have something to do with him, everyone is a little jealous of him, could it be that this is a broom star?

Therefore, after seeing Fan Wuxi's child-like movements, everyone was a little surprised, and everyone was surprised.

He Yun also noticed that everyone was looking this way, and his face was a little red, but Fan Wuxi seemed to be unconscious, and he squeezed his eyebrows at him, so he had to let himself sit with him.

The base commander's face was a little embarrassed, and he coughed. I wanted to say something, but the general next to me also saw the situation here, and said with a smile, "Hehe, Major He Yun, since Boss Fan doesn't mind squeezing with you, then you can reluctantly make it difficult." Because it's the Standing Committee. There are no extra chairs, so you two will make do with them first. We will now update you on the situation. ”

Although the general spoke, He Yun was still a little apprehensive in her heart, she glanced at the base commander, and was a little afraid to sit down.

The base commander coughed and said, "The chief has said it, you just sit down, see what I do?" ”

The admiral laughed. "You father and daughter, really, hehe."

"He's your dad?" Fan Wuxian asked He Yun, who had just sat down next to him, and when he saw her nodding, he suddenly said, "No wonder I think you two look a little alike, I thought it was relatives or something, but I didn't expect the base commander to be your father." ”

**Yes. There is definitely a suspicion of ** place!

Fan Wuxi not only sighed secretly, but only a few days after he came to the base, he met He Yun, Han Chang and Du Pengfei, all of whom were children of soldiers, except that Du Pengfei was an orphan of a martyr, He Yun and Han Chang's father were both lieutenant generals in the base. And Du Pengfei was originally very likely to become Han Chang's husband, speaking of which, they are all **, and their military ranks are much higher than those of officers under normal circumstances, can't you doubt that there is nothing boring in this?

However, it is obvious that Fan Wuxian does not have much time to think about this issue, and the words of the base commander mobilized everyone's emotions.

"Comrades, I have an update to inform you of the situation." The base commander opened a folder and said to everyone. "According to the temporary notice of the superior. The head of No. 1 will come to the site on the day of the launch of the satellite to inspect the work. ”

Yes?! As soon as the news was announced, everyone in the room couldn't hold back.

The No. 1 leader was present at the scene. This is not something that happens all the time, which is enough to show that the superiors care and attach importance to our work! Of the country's four major launch bases, our Jiuquan base is a time-honored brand, and now it is the first time to accept an international satellite launch mission, and it is about to open up an important juncture in the international market.

Therefore, when the base commander finished speaking, everyone present immediately had a bright smile on their faces, and they couldn't wait to see the No. 1 leader immediately and listen to his old man's earnest teachings.

Belch? Fan Wuxi was also very surprised, but his more idea was that this time he could take a group photo with the No. 1 chief, and when the time came, he would wash it into a large photo and hang it on the living room wall of his home to receive guests, wouldn't that be a very face-saving thing?

Thinking of this, Fan Wuxian couldn't help laughing, and when He Yun next to him saw it, he immediately felt that Fan Wuxian's appearance at this time was a little obscene, and he couldn't help but snort coldly when he saw that he was fighting bad ideas in his stomach.

"It is a big surprise that the No. 1 leader was able to come and guide in person." The base commander waved his hand to signal everyone to be quiet, and then continued, "After receiving the notice from our superiors, there was also a message from our launch site, which also surprised us. ”

Is there a second accident? Not only Fan Wuxi, but others were also stunned.

The base commander frowned and said, "The launch will be launched the day after tomorrow, but just now there was news from the launch site that the rocket found a level that was somewhat abnormal during the last test of the ground, that is, if the root cause of the problem is not found, I am afraid that it will not be able to launch on time." ”

Yes?! Now everyone is stunned!

The leader of No. 1 came to watch the launch process, which was obviously an accident, and it was indeed gratifying, and the abnormality of the rocket detection was another accident, which was obviously shocking, and the two news came at the same time, bringing everyone the feeling, it was a little unclear whether it was surprise or joy.

And the most depressed person is, of course, Fan Wuxi, not to mention how awkward it is in his heart, this good news and bad news reach at the same time, what does it mean? At this time, he was really a little skeptical, naturally no one dared to make up this good news, but could this bad news be deliberately made up by someone, just to show in front of the No. 1 leader how strong the response ability of all members of the base is in the face of emergencies?

But when you think about it, it's unlikely, and it seems that something really went wrong.

Is this launch a big bet? It's just that this dice cup, is it open or not?

Hehe, the second update has finally been delivered. Tomorrow's first day is more likely to be in the afternoon, because I was told to listen to the report in the morning, and it was obviously a delay of some time. The little wolf will continue to work hard to code words and strive to ensure that tomorrow will also update 10,000 words. Then, go ahead and ask for commuter pass support. Thank you! *************！ ~！ [To quickly find this site, please search in Baidu: Sanlian Literature Network]