I ask you to build tractors, but you build rockets?

"Red is the true center of gravity. It can only be determined after it is rotated... Oh, you all know that you don't need me to tell you."

"No, no, no, keep going, keep going."

Although Ye Changsi is not a few years older than Shen Zuozhou, the latter respects him very much, because Ye Changsi is the only man who can chat with the otherworldly lunatics at the Institute of High Energy, and he is definitely the top figure in the aerospace industry.

"Then I will continue... ahem, after the entire space station rotates to determine the true center of gravity, as long as the error is not too big, it can be handed over to AI.

For the problem of difference in center of gravity, there are two main solutions:

The first is the real-time control of the rotational attitude adjustment device. It can be adjusted through the ion thruster and gas RCS under different circumstances. The adjustment range is as long as the space station does not tilt significantly. As for small attitude imbalances and yaws, there is no need to pay attention to it. , wait until the accumulation reaches a certain level before actively adjusting.

The second type is the gravity slip ring we place in the hollow area inside the spoke cabin, functional cabin, and pilot cabin. Half of the mass of the 30-ton spoke cabin is this gravity adjustment system.

Through the displacement of high-density metal slip rings, the axial and longitudinal center of mass of the entire space station is automatically balanced, and it is also the most important stabilizing device.

It is the most delicate part of the space station besides the power system. It requires a separate emergency power supply and frequent inspections. It also needs to be protected from any major impacts to avoid damage.

Generally speaking, as long as one of these two systems is working normally, the space station can be restored to a stable state, and the Advance itself does not have the ability to repair them independently. Even if we dispatch a space shuttle to repair it, it will be very difficult. "

After Ye Changsi finished speaking, he paused again. He looked at Zhong Cheng, who was listening with interest, and Lin Ju, who was yawning. He said with some meaning:

“Repair of any cabin on the space station is extremely complicated, and it may even be better to replace it. The man-hours consumed and the risks are beyond imagination.

Our goal in the next stage should be to build a new semi-open space port with a capacity of more than 1,000 tons to provide maintenance capabilities for large space facilities. "

Zhong Cheng, who was still immersed in technical details, immediately sobered up and now he is very sensitive to anything related to budget.

"Can't we modify it based on the existing facilities? Adjust the configuration of the Tiangong Space Station and add a few special cabins. It should be able to accommodate the Qianjin, right?"

"Of course not. The configuration of the Tiangong Space Station has basically reached its upper limit. Even if it is basically feasible, we still have to consider the subsequent maintenance issues of the larger space station or spacecraft."

"Bigger?!"

Zhong Cheng regretted why he came here after the lengthy discussion on deep space exploration, and immediately stepped aside.

Lin Ju didn't notice the confrontation between the two because he was tired. He just wanted to go to the hotel to have a bottle of "Anatomy" and then have a good sleep.

The 314 injection has officially gone through the clinical trial process. The official name is "Anshenduo". It has been improved from an injection to an oral liquid. It is forcibly classified as a second-class psychotropic drug by the Medical Bureau, which is the same level as sleeping pills.

The biological laboratory first wanted to sell "Anshendo" as a health product and promote it like a functional drink, but after observing several clinical trials at the Medical Bureau, it refused without hesitation. Even if Xinyuan is powerful, it can only be a psychotropic drug. .

The drug effect description is also very strange: the function of this product is to provide 10 to 12 hours of high-quality sleep without damage. After taking it for 5 minutes, it will produce 1 to 2 hours of euphoria. There are no obvious side effects. It should not be used more than four times a week. Overdosage can cause Increased insomnia and other risks.

The side effects of 314 injections have become the main effect, and the potency has been adjusted to increase the frequency of use. The reason is that the Medical Bureau refuses to publicly sell any "stimulant" drugs, no matter how reliable they are, but is willing to use them instead of sleeping pills.

The consequences of excessive use of "Anshenduo" can cause varying degrees of vomiting, diarrhea, fainting in severe cases, or temporary reduction of immunity, but it is not as dangerous as ordinary sleeping pills.

On the contrary, "Anshendo" has successfully attracted the attention of the army, and it seems that there are plans to include it in military supplies. After all, this thing can replace morphine to a certain extent, and the side effects are far less severe.

"Anshendo" is now circulated within the base and within a small area of ​​the Aviation Development Commission. Especially when you are not feeling well but need it, a bottle of it will make you dream back to the age of eighteen.

Through the promotion of the base, "Anshenduo" will almost be launched into circulation in November. However, due to the control of Class II psychotropic drugs, Lin Ju is relatively pessimistic about its sales prospects.

While he was thinking about "Anshenduo", Ye Changsi had already completed the inspection of the preparations for the Qianjin.

It is now 14:00 on February 26th and everything is ready.

Only then did Lin Ju return to reality after being poked by Zhong Cheng, and then nodded to Ye Changsi with utmost trust:

"Let's get started, let NACA see what the second operating artificial gravity device in the world looks like."

…

Forward number.

In the pilot cabin on the axis, the console that Li Sheng often operated before lit up. The SC09 intelligent AI of the flight computer activated the gravity function module, which was connected to every sensor and power unit through wires and optical cables.

The attitude adjustment nozzles on the 12 centrifugal cabin sections began to work, first adjusting their relative direction to the earth like the previous "Isaac Newton".

However, unlike the Isaac Newton, the center axis of the Advance's rotation is in the same direction as the line connecting the center of the Earth, and the full frontal ring structure can still be seen from the Earth.

This process only took 30 minutes, because Qianqian had already been roughly aligned during the months of testing, and now it was just fine-tuning and confirmation.

After completing this work, nearly a hundred independently controllable RCSs on the 12 cabins began to spray gas uniformly in the tangential direction.

The nearly 1,700-ton space station does not appear heavy in space. The RCS power is very low, but it still steadily pushes the entire space station to start rotating slowly.

The target for the first trial run is 0.2 revolutions per minute, which is only one revolution every five minutes. This is a very, very low speed.

But this is enough. When the speed exceeds 0.05r/min, the sensors inside and outside the Forward have captured the uneven center of gravity of each part. The metal slip rings of the six spoke cabins begin to move outward to varying degrees, allowing the display to The three-dimensional positions of the red dots and the green dots on the image should be as consistent as possible.

This is a fairly complex design process that involves the entire space station, but it is already being carried out simultaneously when RCS is working, and the actual time is much shorter than people think.

Just 20 minutes later, the Advance has reached the expected speed of 0.2 revolutions per minute, and the outermost centrifuge cabin has a speed of 1.3 meters/second, gently brushing through the empty space.