April 17, 2016

Mu Yang came to the satellite project team on the 7th floor of the Aviation Laboratory Building to accept the samples.

In the 702 laboratory room, two Xingdou-1 satellites have been placed, and one of them has deployed its solar panels.

Technical manager Lu Ding knew that the chairman was coming, so he was waiting in the laboratory today. When he saw the person coming, he stepped forward to say hello respectfully.

Mu Yang nodded after seeing Lu Ding, and first observed the actual satellite.

The Xingdou 1 sample has a gross weight of 351 kilograms, a length of 2.6 meters, and a width of 1.40 meters. This size refers to the size of the solar sail panel when it is contracted, not when it is expanded.

The length and width are large, but the thickness is very thin, about 9 centimeters thick. From a distance, it looks similar to a laptop. After the solar panel is folded, the total thickness is only about 24 centimeters.

The total space occupies approximately 0.87 cubic meters.

After entering the space orbit, the solar sail panel will unfold on one side to be about 10 meters long. It is somewhat like Musk's Starlink satellite, but the structure is more compact. This is why Xinghai Group uses metal 3D additive technology to manufacture it.

Of course, although Xingdou One is compact in structure, the materials are different, so the overall mass is heavier.

The fairing of Starry Sky 1 is relatively long, and the internal load space is about 346 cubic meters. Theoretically, it can carry 398 Starry Sky 1 satellites.

But in fact, due to the fact that the satellites are folded for storage and the mechanism for launching the satellites is designed, it is estimated that it can carry 340 satellites. The total weight of the satellites is about 119.34 tons. Including other additional weights, the total is about 125 tons.

[Tip: After rigorous calculations, the liquid oxygen and liquid hydrogen at full load have occupied 502 cubic meters of space. Plus other factors, it was found that the original space of Starry Sky One was far from enough. The original design data was not rigorous enough. Sorry, the length is now modified.

It is 58 meters, straight-cylinder structure without steps, and the diameter of the cylinder is 4.8 meters.]

After Mu Yang looked at the actual object, he took a page of catalog from Lu Ding, which marked "Xinghai Group Xingdou-1 Star-Ground Docking Test Method", "Satellite-Ground Equipment Delay Measurement Method" and "Star-Ground System Ground Monitoring Station Maintenance Procedures"

"A list of 21 standards including "Star Dou-1 Payload Orbital Test Method", which is internally called "Enterprise Specifications".

There are quite a lot of standards, so Mu Yang asked Lu Ding to take one of the enterprise specifications "Satellite-Ground Docking Test Method" to review on site.

This specification was dozens of pages thick. Mu Yang glanced through it and found that it was not compiled randomly or copied from others, so he did not check other specifications.

He attaches great importance to standards. This is a company's technology and experience that must be passed on.

Mu Yang solemnly explained: "Manager Lu, in addition to technical specifications, everyone should summarize the experience in the development process. The good and bad should be written clearly, especially the key points. Don't write them blindly so that others can read them.

Learn to avoid misleading others. This must be strictly implemented. There is no rush, but you must take it seriously.”

Mu Yang had compiled technical specifications in his previous life. Sometimes he was pressed for time. In order to meet the company's requirements, some data was just made up. People who didn't make it himself couldn't tell the difference. The leaders above didn't understand the details, let alone check carefully.

.

Fake data, such as welding current and voltage, but if someone else tests according to his data, even if the current error is 10A, you will find that the welding quality cannot achieve the expected results.

"Okay, I understand." Lu Ding said after taking over the specifications that the chairman had read. Mu Yang nodded and continued to accept the Xingdou One satellite.

"After the satellite goes into space, the key lies in the solar panels. If it cannot be deployed normally, the satellite will be useless. You need to do more tests, even artificial interference tests."

The expansion of existing satellite solar panels generally relies on memory metal. When the operating temperature reaches a certain temperature, it will automatically expand according to the originally set shape.

Or use a pyrotechnical mechanism. Before launching, fold the solar panel and compress it with a spring, and then use a pyrotechnical mechanism to lock it.

When unfolding, the pyrotechnics mechanism receives instructions, the explosive bolt detonates, explodes the locking mechanism, and the sail panel is unfolded under the action of spring force.

This process seems simple, but for satellites to enter the real

The working status of the satellite is a very important link. There are cases of failure in various countries. A good satellite turned into a junk satellite because the solar panel could not be opened.

Both options have their own pros and cons, and it’s hard to say which one is the best. Xinghai Group adopts the former option.

"According to the test plan, we plan to conduct no less than a hundred tests and then artificially interfere with the test."

"Yeah, okay." Mu Yang nodded in approval.

After the sample is produced, it still needs to be discussed together to see where it can be optimized.

Before it is manufactured, some easily overlooked problems cannot be seen in the design drawing alone.

The next day, Mu Yang asked Lu Ding to organize a meeting of the satellite project team to count the problems that occurred in satellite manufacturing, analyze the problems that may be encountered in mass production, and further optimize it.

The sample analysis meeting lasted for one day, and Mu Yang conducted the final review in the afternoon and also put forward some suggestions for correction.

There were twenty or thirty problems, large and small, and Muyang gave them seven days to optimize them.

Another seven days later, on April 25, the optimized samples came out and were reviewed again.

This time the review was finally completed.

"First carry out small batch production of a hundred pieces. Your R&D department must track the production. Don't sit in the office or laboratory. There may be some problems that we haven't found out.

Whether something is good and whether it can be produced is equally important.

After the small batch production was OK, five satellites were launched for launch. The rocket launch base quickly completed the launch. When they come out with real data, only after the satellites are launched into the sky and used, will they know whether it is easy to use or not.

After it is confirmed, we will decide on mass production." Mu Yang put forward new requirements to Lu Ding, "The production workshop cannot increase the production capacity quickly at once, so be more prudent.

"Okay, Chairman, I understand."

Lu Ding nodded solemnly. The production cost of 20,000 Star Dou-1 is tens of billions of yuan. If something goes wrong, the loss will be huge.

After Mu Yang inspected the satellite laboratory, he went to the satellite production workshop, found the production manager, and asked him about the production preparations.

"Chairman, there are still quite a lot of material differences. Currently, we can only guarantee the production of a thousand satellites."

"Well, how long does it take to prepare all the materials?"

"In two months, we need to produce as many materials as we need. We need to produce 20,000 pieces in half a year. We are not fully prepared in all aspects and have to transfer personnel from other workshops. After the satellite is produced, most of the production personnel will return to their original positions."

"The situation is urgent, do your best." Mu Yang said, this situation is already considered very good.

Even if Chou State knew that they wanted to prepare tens of thousands of satellite materials and then produce these tens of thousands of Starlink satellites, Mu Yang felt that they wouldn't be able to do it in a year.

Muyang does not give the company's project team that much time to debug the satellite. It launches first and trades money for time. If the satellite is found to be unusable after launch, it is normal. As long as it is controlled within a small probability range, it is acceptable.

A few days later, on May 1st,

Xinghai Group was on holiday, but on the west coast of the Atlantic, Musk's Spex company detonated a depth charge, causing huge waves in the media.

Their company announced that the Falcon 9 FT carried 11 OrbG2 satellites and launched it to LEO at Cape Canaveral Air Base, making history by successfully recovering a first-stage rocket on land for the first time.

Although Xinghai Group and SpeX both recycle rockets, Xinghai Group recycles the entire rocket, while SpeX recycles the first-stage rocket, and the Falcon 9 is a second-stage rocket, and the second-stage rocket and fairing are not recycled.

However, Falcon 9 itself is also constantly being iteratively upgraded. It was the first to recycle a first-stage rocket, and is probably the first to reuse a first-stage rocket and the first to reuse a cargo spacecraft.

The media in Ugly country made enthusiastic reports and spread to the domestic media in Hua country. Domestic netizens had to admire this company.

"Some companies only make money and do not engage in scientific research. Look at other high-tech companies. Their goals are the stars and the sea.

.”

"Domestic companies all like to engage in marketing. Who will engage in technology? It's not that marketing is bad, but that we need to focus on the key points."

"It seems that domestically we can only count on Xinghai Group, but there has been no news about Xinghai Group recently."

"Mushen has not been showing up much in the past year or two. I heard that he is busy with scientific research all day long. The chairman of this kind of company is worth learning from domestic companies, rather than spending too much attention on marketing."

When the SpeX space company launched a satellite, Mr. Liu was accidentally slandered. After seeing the media news, he was a little angry: You are slandering me, you are slandering me!

What does this have to do with him? There is more than one company in China that is like this, so why is it targeting him?

In fact, he knows that his good days don't have much time left. Since Xinghai Group announced its plan to invest 200 billion yuan into the computer industry at the beginning of the year, the water in the computer industry has become even turbid.

Now, all computer brand manufacturers are clearing their inventory as soon as possible, and the price reduction process will be completed this year. After all, the situation is unclear. If Xinghai Group really waits for new products to be released, it will have a huge impact on the computer industry.

They dare not bet that Xinghai Group will definitely have no problem making computer CPUs. It is a matter of time. It is estimated that the product will be released this year. Now it has cooperated with various computer parts manufacturers, and even four-star companies have confirmed cooperation and implemented it in Huaguo Green City.

That is to say, Mu Yang's hometown invested in building an LCD factory. This was just following his own interests, and even the stick was playing tricks on the world.

Other manufacturers that have signed cooperation agreements with Xinghai Group have followed Four Star Company's lead and invested in building factories in Muyang's hometown.

SpeX company successfully recovered the rocket, but several students in Muyang could not understand the teacher's operation.

"Senior sister, your teacher's company should be the first to make history in recycling rockets, right?" He Wang, Mu Yang's second-term student, asked Leng Han.

Leng Han moved his eyes smartly, pondered for a while, and said in a high-pitched tone: "Not really, it is just a test satellite, and there is no launch satellite yet. However, even if the satellite is successfully launched, I guess the teacher will not

Choose to publish." "Why?"

"Teacher likes to keep a low profile, unlike that foreigner who always has nothing to hide." "This is true."

"It's good to understand. As students, we can't get on the stage. We just watch them act."

Leng Han nodded. In fact, she didn't quite understand why the teacher was unwilling to announce the rocket launch.

She didn't know about the Star Network plan, but she also knew about confidentiality issues. As long as it involved scientific research, they would not disclose it to the outside world or their family.

There is a clear rule in Xinghai Group that scientific researchers are prohibited from discussing work matters outside the laboratory and office, and are prohibited from disclosing the details of scientific research projects to the outside world.

Leng Han and others had a casual discussion in the laboratory, but when they left the laboratory, they said they would not discuss what they were doing in Xinghai Group at school.

When classmates asked them what they were doing at Xinghai Group, they would only answer that they were studying, but it was inconvenient to answer many questions.

Xinghai Group recruits a large number of students at Jiangzhe University every year, and is the company or unit with the largest number of Jiangzhe University graduates signing contracts. Some students probably know Xinghai’s confidentiality regulations, and don’t ask questions that shouldn’t be asked.

Xinghai Group's satellites are being optimized in full swing, and good news came from another department. A sample of the developed computer chip Purple Star C11100 was released.

Purple Star C2 and C3 are later.

But if mass production is to be realized, it will probably be by the end of the year.

CPU prototyping requires printing an entire 12-inch wafer, which can theoretically produce four hundred Purple Star C11100 chips.
To be continued...