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 muttered softly He repeated it.
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 from the perspective 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 has returned to the world, he is bound to make waves again.
Once a breakthrough is achieved in research on the kinetic 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.
If you look at it in the long run, 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 close-Earth flights are rarefied gas dynamics. Research scope...
For a moment, Zhou Pingjian’s thoughts I have completely let go and started thinking about how I should take advantage of my position to follow up immediately after Chang Haonan's research breakthrough -
As for the research projects behind this field, whichever one can really be implemented, They are all National Science and Technology Progress Award-level influences.
The National Science and Technology Progress Award is the key to opening the doors of the two academies and rising to the level of academician.
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 thought made Chang Haonan across from him misunderstood.
"Old Zhou, do you have any ideas?"
He thought it was the former who suddenly came up with some inspiration.
"Oh...that's not true."
Zhou Pingjian came back 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 only at 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 a lot of things have been settled in the past. All plans must 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 enters orbit and the docking test is successful, it will Some countries have begun to contact you... The number of residents on the International Space Station is limited, and the number of foreign exchanges remains unchanged. As long as it is unobstructed, no one will reject another possibility..."
In this timeline, due to the increase in resource investment in the aerospace field and the rapid progress in research levels in various fields, Tiangong-1 The project was brought forward to launch almost simultaneously with Shenzhou 7, and now it has begun to take shape.
Although the scale and complexity cannot be compared with the International Space Station, as a verification spacecraft that stays 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, Zhou Pingjian, standing in the perspective of 2006, could not be so optimistic:
“After all, there are others ahead of us on the space station. Even if we follow at a faster pace, to outsiders, I can only come as a person who cannot go. Alternative options for the International Space Station... If you really want to maintain your voice in the international space field, then I think you have to make something like this time that others can’t!”
Hear! Here, 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 such a huge ambition to be hidden... Chang Haonan was just about to make a few jokes, but suddenly a light flashed in his mind——
Earliest from the soil Modifying and building relay communication constellations At that time, he had a vague idea of landing on Mars.
But 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 make... Mr. Zhou, actually I have always had an immature thing. "
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 before."
In this case, Chang Haonan is 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 a location further from the earth? Build an experimental space immigration transfer base?”
“Cough cough cough——”
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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, or transit, for traveling to extraterrestrial bodies like the moon or Mars. Station, greatly reducing the requirements for one-time carrying capacity."
At this point, Chang Haonan paused for a moment to let the other party digest what he said, and then continued to explain:
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"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. 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 special. Exaggeration..."
"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 in order to reduce gravitational perturbation and atmospheric perturbation as much as possible, we also need to obtain longer and more continuous sunshine time..."
Chang Haonan nod.
"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 was already at this moment It's a bit of a comeback.
He has realized that the other party's idea may be bolder than he thought before.
"Yes..."
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, it does not have a particularly significant advantage. As for the lunar orbit... from At the beginning, it did not meet the needs of being a transfer station for deep space exploration.”
After all, Zhou Pingjian is also 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 meant:
“Then there are still feasible options left, and the only remaining option is the Earth-Moon Lagrange. Ordered..."
Chang Haonan showed a smile of "you still understand me" 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 oscillation is stable, and even if the influence of other celestial bodies such as the sun is taken into account, the stability here is much higher than that of other positions... Of course, the L4 point of the sun-earth system may be better, but in a short time I'm afraid it's not feasible... ..."
"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 By performing power control once every 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..."
(End of this chapter)