Chapter 1280 Space Immigration Test Base?

In fact, when Chang Haonan said for the first time that he was going to take a step further based on Qian Lao's research, Zhou Pingjian was not only shocked, but also a little confused.

But the second sentence that followed immediately made him react:

"Boltzmann's equation..."

Zhou Pingjian repeated it in a low voice.

If he hadn't suddenly mentioned this topic, he would have almost forgotten that the person in front of him was also a master of both theory and engineering.

Even in the eyes of outsiders who don't know the inside story, Chang Haonan's most famous achievement is probably the first Fields Medal for a Chinese a few years ago...

After all, after that, the other party turned its focus back to model development, and to a certain extent disappeared from the public eye.

Now that he is back in the world, he is bound to make waves again.

Once a breakthrough is made in the research on the dynamic theory of rarefied gases, it will also be of great significance to manned aerospace engineering.

For the moment, it can at least make the spacecraft more controllable during its re-entry into the atmosphere, and its landing point and landing attitude can be more precise.

From a long-term perspective, the atmosphere on the surface of many exoplanets is only a few percent or even lower than the concentration of the Earth's atmosphere. On these planets, even near-Earth flight falls within the scope of the study of thin gas dynamics...

For a time, Zhou Pingjian's thoughts were completely free, and he began to think about how he should use his positioning advantage to follow up immediately after Chang Haonan's research breakthrough -

As for the research projects behind this field, any one that can actually be implemented will have an impact at the level of the National Science and Technology Progress Award.

The National Science and Technology Progress Award is the key to opening the door to the two academies and ascending to the academician realm.

As the chief designer of the manned aerospace project, it was only a matter of time for Lao Zhou to be awarded the title of academician.

But he is not yet 50 years old this year. With so many students below him, he can't just wait to take over, right?

Now that the opportunity is right in front of us, it is impossible to say that we don’t have the slightest idea.

However, the way Zhou Pingjian muttered and then suddenly lowered his head in deep contemplation made Chang Haonan opposite him misunderstand.

"Lao Zhou, do you have any ideas?"

He thought it was the former who suddenly came up with some inspiration.

"Oh...that's not the case."

Zhou Pingjian came to his senses, quickly waved his hand and denied it.

He has an engineering background, and his understanding of pure theoretical research such as the Boltzmann equation is basically limited to the application level. He is really unable to give useful suggestions:

"I just suddenly thought of something about the project, and I plan to have a good chat with a few students when I go back... After all, after the success of this mission, our external environment in the aerospace field can be said to be completely new, so there are many past decisions. All plans will be changed..."

Chang Haonan had been thinking about nearby space detection just now, but he didn't pay much attention to the weirdness in the other party's tone.

I just heard the other party talking about manned spaceflight, so I followed the topic:

"I estimate that at the latest when Tiangong-1 is successfully put into orbit and the docking test is completed, some countries will start to contact you... The number of residents on the International Space Station is limited, and as long as the path of external communication remains open, no one will refuse another one. A possibility..."

On this timeline, due to the increase in resource investment in the aerospace field and the rapid progress in research levels in various fields, the Tiangong-1 project was advanced to the point where it was launched almost simultaneously with the Shenzhou-7, and now it has begun to take shape.

Although the scale and complexity are not comparable to that of the International Space Station, as a verification spacecraft that resides in orbit for a long time, its basic functions are still relatively complete.

Of course, the reason why Chang Haonan dared to be so certain was largely because in the previous life, the European Space Agency had reached an agreement with China to dispatch personnel to the Chinese Space Station, and even once sent candidates to participate in China's astronaut training. .

It was only because of the sudden changes in the international situation that we were forced to let it go.

However, from the perspective of 2006, Zhou Pingjian could not be so optimistic:

"After all, the space station has other people ahead of it. Even if we follow the pace faster, in the eyes of outsiders, it can only be used as an alternative that cannot go to the International Space Station... If you really want to maintain your right to speak in the international space field, then I think We still have to make something like this time that others can’t!”

Hearing this, Chang Haonan's eyes changed slightly when he looked at the other party.

After working together for the past few months, Lao Zhou's impression on him has always been that of a relatively conservative person.

I didn't expect that there was such a grand ambition hidden...

Chang Haonan was just about to make a few jokes, but suddenly a light flashed in his mind——

Starting from the time of soil modification and construction of relay communication constellations, he had a vague idea of ​​landing on Mars.

It's just that this matter is indeed too far away, so apart from asking the Yinghuo-1 detector to obtain some special data, he has never made any more specific actions.

But now that Zhou Pingjian has taken the initiative to bring up this issue, he can leave a thought to the other party first:

"Speaking of things that others can't do... Mr. Zhou, actually I have always had an immature idea."

Chang Haonan specifically chose to address the other person's position so that what he said next would not sound like a joke.

"Hey...it's all just chatting. Academician Chang can just say whatever comes to his mind..."

Zhou Pingjian acted like "I've never seen anything like this before."

In this case, Chang Haonan no longer secretive:

"I'm wondering, after the verification of a long-term manned space station in low-Earth orbit is completed, is it possible for us to consider building an experimental space immigration transit base farther away from the earth?"

"Cough cough cough——"

The error-free version is being read! 6=9+Book_Bar debuts this novel.

The topic was so explosive that it completely exceeded Zhou Pingjian's expectations. He was choked for a while before he managed to calm down his breathing:

"Space immigration?"

He stared at Chang Haonan's face for a while, and finally determined that the other party was serious.

But not only the three-step strategy for manned spaceflight, but even in the future plans, this program was never mentioned.

"Oh... of course immigration is a gimmick. The main function is to verify the ability of human beings to survive in extraterrestrial space for a long time. The second is to serve as a starting point for going to extraterrestrial bodies such as the moon or Mars, or a transit station, which greatly reduces the cost of one trip. Carrying capacity requirements.”

Having said this, Chang Haonan paused briefly to let the other party digest what he said, and then continued to explain:

"You know, the gravitational perturbation and atmospheric perturbation in low-Earth orbit are very serious, and the shadow time is very long and frequent. It is actually not suitable for long-term operation of spacecraft...On the contrary, it is easier to operate in a farther orbit. Maintenance, although it is inevitable that the cost of transporting people and materials will be higher during the construction process, considering that less energy is consumed in operation, the maintenance cost after completion will not be particularly exaggerated..."

"Wait wait wait..."

The time Chang Haonan had just set aside was obviously not enough, so Zhou Pingjian quickly stretched out his hand to stop him from continuing:

"Academician Chang, what you just meant is that if you want to reduce gravitational perturbation and atmospheric perturbation as much as possible, you also need to obtain longer and more continuous sunshine time..."

Chang Haonan nodded.

"That means that this space...space immigration test base cannot be built not only in low-Earth orbit, but also in geosynchronous orbit or lunar orbit?"

Zhou Pingjian had come to his senses now.

He has realized that the other party's idea may be bolder than he thought before.

"That's right..."

Chang Haonan continued to nod:

"In addition to the two factors of perturbation and sunshine time, the speed increment required for the transportation process in geosynchronous orbit is at an inflection point. Even compared to farther space, there is no particularly significant advantage. As for the lunar orbit... from It did not meet the needs of being a transfer station for deep space exploration at the beginning.”

After all, Zhou Pingjian is an experienced aerospace veteran. He just lost his ability to think in a short period of time simply because he was too shocked.

Now after a period of buffering, I finally understand what Chang Haonan means:

"The only feasible option left is probably the Earth-Moon Lagrangian point..."

Chang Haonan showed a "you still understand me" smile and further added:

"Strictly speaking, it's point L4."

As he spoke, he took out a piece of paper from his briefcase and drew a simple diagram:

"In the Earth-Moon gravitational system, the L4 point is the absolute balance point where oscillations are stable. Even taking into account the influence of other celestial bodies such as the sun, the stability here is much higher than other positions... Of course, the L4 point of the sun-Earth system Maybe it’s better, but I’m afraid it won’t be feasible in a short time…”

"In short, I have calculated before. If we construct a quasi-periodic orbit near the actual L4 point orbit and set the initial position deviation and initial speed deviation to 10^-6, then we only need to perform power control every less than five days. The total energy consumption for orbit maintenance calculated based on a five-year position period can be reduced to 0.3m/s, which is almost negligible..."