Into Unscientific

Following Mr. Wang's 'Xiao Ge' exit.

The oldest old man on the scene was suddenly shocked.

I saw him walking forward a few steps quickly, came to Wang Lao's side and held his left hand vigorously, his eyes were a little red:

"Commander!"

Elder Wang's slightly muddy gaze stayed on the same haggard face of 'Xiao Ge' for a while, and sighed slightly with emotion:

"Xiao Ge, I haven't seen you for so many years, even you are getting old."

'Xiaoge' didn't answer when he heard the words, but he suddenly increased his strength holding Elder Wang's hands, and was obviously aroused.

at the same time.

Elder Wang's life assistant Zhang Dong approached Academician Pan and Xu Yun, and introduced them in a low voice:

"Academician Pan, Dr. Xu, this is Professor Ge Tongyou from the Xichang Satellite Launch Base, and a member of Wang Lao's team."

"Professor Ge Tongyou's resume is relatively complicated. He served in the navy in the early years and was mainly responsible for sonar balance issues."

"Later, due to certain circumstances, the country launched a third-line in-depth construction, and Professor Ge was first transferred to the Jiuquan Satellite Launch Center."

"Under Mr. Wang, he assisted in the completion of the relevant design of Dongfanghong-1. After many years, he was transferred to the Xichang Satellite Launch Base and stayed there until his retirement."

"Both of you should have heard of Dongfanghong-2, the famous satellite of the Xichang launch base. Professor Ge contributed to that satellite—he is the overall project leader and the first person who completed the mechanical derotation method."

Hearing Zhang Dong's introduction.

Academician Pan and Xu Yun looked at Ge Tongyou with seriousness and reverence.

In the modern history of China.

"Cadres going south" can be described as an important strategic move. Many cadres going south will spend their entire lives leaving their hometowns.

In fact, not only Ge Tongyou.

Xu Yun’s grandfather was also a cadre who went south from Wendeng, Haidai Province. He met Xu Yun’s grandmother who was originally from Shaanxi Province in Shanghai. The two got married in Hangzhou and finally took root in Fujian. It’s quite interesting to say .

The two words "going south" and "third-line construction" may seem flimsy, but for many witnesses, these two words cover most of their lives.

However, Tongyou Ge obviously knew that the current situation was not suitable for a long talk, so after the greetings were over, he took the initiative to act as an introducer for Mr. Wang:

"Old Wang, this is political commissar Dong of the launch base. This is Director Zhang, the chief dispatcher of the command and control hall."

"This is Manager Huang who is responsible for the external high-throughput communication services of the Long March series"

With Ge Tongyou's introduction, the identities of these people at the scene gradually became clear:

Three main leaders of the base, three technical researchers, plus Ge Tongyou and another retired veteran cadre named Guo Rui.

The welcoming lineup was not high-profile, and there was no ostentation, but all the respect that should be given was still given.

The purpose of Mr. Wang's nominal visit to the Xichang base this time was to understand the current situation of the base and to see old friends, and he did not express his intention in the car.

So after the greetings are over.

Under the leadership of Li Hua, the current chief designer of the Long March 3 rocket, everyone began to visit the park.

"Old Wang."

Following Wang Lao's side, Li Hua's expression seemed a bit cramped. After all, this is the founder of Huaxia Satellite Aerospace:

"The layout of our base has remained the same over the years. It is mainly divided into three modules: the launch tower, the command and control hall, and the logistics center. However, a lot of internal equipment has been replaced."

"For example, not long ago, the command and control hall just cooperated with the Electronic Information Basic Center of the General Armament Department to upgrade the 'Fuxi' fire control dispatching system. The error feedback of thousand signal simulations has dropped by 1.5 orders of magnitude compared to before."

"In addition, the launcher was also maintained and replaced at the end of last year. On the 13th of last month, we launched an Asia-Pacific 6E satellite."

"Of course, the total number of launchers remains the same."

Elder Wang nodded lightly.

Speaking of Xichang Satellite Launch Base, many people should know that it has two launch towers.

But what few people know is that the numbers of these two launchers are not one and two, but two and three.

The earliest No. 1 launcher has not been completed so far, and its mission is actually quite magical:

It is the launch station designed for the Dawn manned spacecraft.

The Shuguang spacecraft is the famous 714 project, based on the "Gemini" spacecraft across the sea, and was proposed after the Dongfanghong 1 satellite.

Project 714 also selected a group of reserve astronauts from the Air Force, but was eventually forced to cancel due to financial and technical problems.

However, there has always been a rumor among the people who does not know where it came from. It is said that 714 was actually a success. Two people were sent to heaven and are still alive today. There is no news report because there is no declassification.

The outrageous thing is that there are quite a lot of people who believe it, and the question is that the top secret cannot be easily disclosed.

well, let's get back to business.

Today is a rare sunny day in Rongcheng. Walking outdoors is not only not a pain, but a very pleasant thing.

Everyone walked and chatted like this, and Li Hua introduced other facilities in the base to Mr. Wang.

Almost an hour later.

The group finally arrived at the command center of the Xichang launch base.

The missions of satellite launch bases these days are very complicated. In addition to national launch missions, most of them are commercial outsourcing.

Especially some small countries in Southeast Asia often outsource launch tasks to several bases in China.

Therefore, although there is no national launch mission today, the interior of the command center is still quite lively.

From the moment they entered the lobby, there were always researchers walking around briskly holding documents or talking to the communicator, and they would greet Li Hua and others when they met them.

"Old Wang, to tell you the truth, when there is no launch mission, the command center and power supply station are the places with the most employees in our park."

After coming to a quiet conference room, Li Hua enthusiastically poured a glass of water for Mr. Wang, and said with a smile:

"Of course, during the day, there are a lot of people in the dormitory—after all, all of us doing research are night owls."

"Thank you."

Old Wang thanked him politely, then glanced at Xu Yun beside him, and slowly said:

"By the way, Xiao Li, I've been away from the front line for a few years. I don't know how accurate the load balance can be achieved by our spaceborne instruments now?"

"A spaceborne instrument?"

Li Hua's expression suddenly became serious, he thought for a moment, and looked at Tongyou Ge beside him:

"Professor Ge, you are an expert in this field, why don't you come and talk to Mr. Wang?"

"no problem."

Ge Tongyou nodded readily, his expression looked eager to try:

"Commander, do you want to know about orbiting satellites or equipment on the space station?"

Wang Lao thought for a while, pointed to a satellite icon on the conference room projection screen and said:

"There is no need for the space station, let's talk about orbiting satellites."

Ge Tongyou picked up a glass of water from the table to moisten his throat, organized his words, and then continued:

"No problem, commander-in-chief, to tell you the truth, if you ask about the space station, I can't tell you many things."

"Currently, there seem to be a lot of spaceborne equipment on orbiting satellites, but in fact there are not many major categories. They are basically sensing or imaging equipment—of course, conceptual things like laser weapons are not included. .”

"Our country's current stability in this regard is second to none in the world."

He paused, then continued:

"We optimized the calculation model of gravitational pull at the beginning of 22, and the fitting curve parameters reached 28800+."

"For example, last year a certain imaging satellite launched by a certain type of Long March rocket took photos of the same area within 90 minutes. The errors in parameters such as swing amplitude, polarization, and swing frequency were all about five or six ten thousandths."

I heard this.

Xu Yun couldn't help raising his eyebrows.

His major has nothing to do with artificial satellites, but Zhang Heguang is a good friend of the University of Science and Technology Observatory, but he is a doctor of astrophysics.

In addition, the gravity gradiometer itself has a certain intersection with the satellite, so Xu Yun had learned some aviation knowledge long ago—as early as when the Diting project team was established.

The description of the process of launching a satellite into the sky in high school physics books is actually very simple, that is, the launch speed should reach the first cosmic speed.

Then it is generally added that it is also the maximum speed of the satellite's circular motion around the earth.

But in fact.

For satellites carrying instruments, orbiting the earth is actually not an easy task.

Because it involves the problem of Lagrangian points.

The so-called Lagrangian point refers to the point at which a small object can be stabilized under the gravitational action of two large objects.

A point in space of a small body under the gravitational pull of two large bodies at which the small body remains substantially at rest relative to the two large bodies.

There are five Lagrangian points between each star, denoted by L1 to L5.

At present, there are already SOHO satellites stationed at the L1 point of the Japanese system, and the L2 point is more lively.

The space agency's WMAP detector, the James Webb Space Telescope and our Chang'e 2 satellite across the sea have all been stationed at L2.

to some extent.

The Lagrangian point is the most stable point in the starry sky, so it is also called the chest of the cannon girl in space. Ahem, the tarmac in space.

In other words.

There is no problem with the operation of satellites that are not at these five points, but due to the gravitational drag, every time the satellite circles the earth, the instruments on it will shift a little bit.

In terms of imaging satellites, when they bypass the same area, the parameter errors of the three parameters of swing amplitude, polarization and swing frequency are.

At present, the strongest spaceborne instrument technology in the world is still across the sea, which is not difficult to see from the total number of satellites.

As of January 1 this year, there are 4,582 man-made satellites in orbit around the earth, of which 2,944 are located across Gwanghae.

Huaxia's Chinese satellites are 499, and Maoxiong has 169.

If the satellites that are not working but have not fallen are counted, there are currently more than 6,000 artificial satellites in Earth orbit. (reference from UCS official website, ucsusa.org/resources/satellite-database)

According to the information Xu Yun learned before.

The parameter error in China in 2019 was about 1.5 to 2 per thousand, but the imaging width of general imaging satellites is 10 kilometers or higher, so this error is almost negligible.

As for the opposite side of the sea, it is 3 to 4 per 10,000, and the advantage is quite obvious.

Bears and rabbits are almost at the same level, about 1.5 per thousand.

After these three companies, the gap between the other major countries and regions has gradually become outrageous.

For example, the error of JAXA, the aerospace research and development agency of Neon, can even appear a few percent.

What Xu Yun didn't expect was the result.

Today's Xichang base can actually shorten the error to five or six ten thousandths?

Mr. Wang has been receiving treatment and recuperation since 20 years ago. He really doesn't know much about this kind of detailed news, so he is also a little surprised at this time.

But soon.

He came back to his senses, and beckoned to Xu Yun who was beside him:

"Xiao Xu, come here."

Xu Yun stepped forward obediently.

Then Mr. Wang patted Xu Yun on the shoulder, and introduced to Ge Tongyou and Li Hua:

"Xiao Ge, Xiao Li, Xiao Xu's identity was introduced by Xiao Pan just now, right?"

Ge Tongyou and Li Hua nodded together.

When visiting the garden before, Academician Pan introduced Xu Yun's identity to the two of them.

In fact, even if Academician Pan didn't take the initiative to introduce him before, Tongyou Ge and the others had already recognized Xu Yun's identity—the press conference is less than 20 hours away.

Xu Yun's performance at the press conference can be described as extremely impressive. Now it is said that there are people on the Internet who have formed a fan support group called "ijiu". It is impossible for Ge Tongyou not to know Xu Yun.

But on the other hand.

Ge Tongyou and the others only knew that Xu Yun was a top student in physics and biology, but they didn't know much about other aspects.

At first Tongyou Ge thought that Xu Yun was just a little transparent carrying a bag, but now it seems

Doesn't seem to be the case?

Just at this moment, Elder Wang spoke again:

"Xiao Ge, you may not be very clear. Xiao Xu has a topic in his hands. Or a project. The content is related to the Pangu particle at the press conference."

"However, at the beginning of this project, it was not to study dark matter, but to prolong the survival time of Pangu particles so that it can be applied to the gravity gradient meter."

Tongyou Ge was taken aback for a moment:

"Gradiometer?"

Seeing that Mr. Wang was struggling to speak at this time, Xu Yun beside him took the initiative to take over the conversation, and said to Tongyou Ge:

"That's right, and Professor Ge, I learned something from a certain channel this morning"

Xu Yun briefly introduced the excavation of the Yongling Tomb to Ge Tongyou, and then repeated the story of the Dingling tragedy, so that everyone gradually had a preliminary understanding of the general situation.

After listening to Xu Yun's introduction quietly, Ge Tongyou looked thoughtful:

"So Dr. Xu, your idea is to let the Xichang base solve the problem of carrier platform balance for you?"

Xu Yun nodded and continued:

"Yes, Professor Ge, due to limited conditions, the full version of the gravity gradiometer that can cruise over the Chinese border for a long time will definitely not be able to land for a while."

"But Yongling's area is only 0.25 square kilometers, and many mass production issues don't need to be considered. To put it bluntly, in terms of hardware, we can pile up a set of 'trial kits'."

"But the hardware is easy to solve, and we can't do anything about technology, so we can only go to our base to ask for help in Wang Lao's car."

Although Xu Yun didn't know that Mr. Wang built a bridge for him until he set off, it is obvious that he was dragged here by Mr. Wang under such circumstances, and he was kind enough to help.

But Xu Yun was a little surprised.

After hearing his words.

Ge Tongyou, Li Hua, and another person in charge of the project team showed some subtle expressions on their faces.

Then Ge Tongyou thought for a moment, and winked at Li Hua.

Li Huachao made an apologetic expression to everyone, and quickly walked to a corner to rummage a few times.

in a minute.

He returned to everyone with a document bag sealed in kraft paper, and handed the document bag to Xu Yun:

"Dr. Xu, look at this."

Seeing this, Xu Yun blinked, and curiously took the file bag.

The seal of the file bag is wound with thin wire, Xu Yun gently twisted the thread, and quickly unsealed the file bag.

Immediately afterwards, he reached into it and slowly pulled out a fax document.

I saw a line at the beginning of the document:

"Letter of Intent for Collaboration on Partial Assembly Design of Gravity Gradient Meter"

Intent declaration unit: Jilin University

Applicant: Huang Yuting.