Chapter 375: The Problem of Building Large Space Facilities
Sure enough, listening to Tang Chao talking, people fell into imagination.
This is the largest man-made space station ever built, and the International Space Station can only be a thing of the past.
The longest is 109 meters, and the longest is more than 300 meters.
The widest is 73 meters, and the widest is nearly 200 meters.
The heaviest is 420 tons, and the heaviest is about 2,500 tons.
Less than 1,000 cubic meters of pressurized space is stacked against 10,000 cubic meters.
How does this compare?
And I heard that at the right time and place, such as around sunrise and sunset on the high mountains, the reflection of the ISS is particularly obvious, and its brightness is also the highest at this time, and it is possible to photograph the ISS if you use a DSLR camera with a telephoto lens.
It's just that it's very difficult to shoot.
Not only do you need to check the orbital position of the ISS in advance, but you also need to set the focal length and exposure value of the camera in advance, and then aim at the sky, and take continuous shots at the moment when the ISS appears in the field of view, and the whole process is relatively short.
But as long as you can photograph it, you can basically take a clear picture of the outline of the ISS.
When all the conditions are suitable, and your eyes are very good, you can see it with the naked eye, at most, there is no SLR camera to shoot clearly, just a point of light.
In fact, not only the International Space Station, but even ordinary artificial satellites may reflect sunlight to the ground when the solar panel is deployed, and if the angle is right, people on the ground can see a fast-moving "star".
They are also often mistaken for UFOs.
Satellites and the International Space Station are like this, so is it possible to see more clearly the Tianting Space Station, which is several times larger than the International Space Station?
If the side of the sun's wings is facing the Earth, and the conditions are right, is it possible to see a blurred outline of the light spot with the naked eye, and the telephoto camera can capture a clearer structure?
Yes, in addition to loving big and spectacle, human beings are also visual animals.
[As long as the facial features are good, the three views follow the five senses]
This is not only the case with people, but also at the machinery and equipment.
I like the big one, I like the spectacle, so I have to see it, before the International Space Station can see a bright spot with the naked eye, and then the Tianting Space Station can see the faint outline of the bright spots with the naked eye, isn't this contrast coming out?
Netizens have bigger brains and speak freely on the barrage.
"Hurry up, I want to see the space station on the ground!"
"Think about that view, it should be beautiful, I've only seen a quick point of light at night before, and I know it's an artificial satellite or a space station, but I can't see it at all."
"In the future, there will be a template for promoting space exploration, and when the time comes, after the lecture, just point to the sky and let them see it."
"It's a pity that such a large space station is not changed to a space fortress, don't forget that there are aliens on Mars."
"Isn't there a manufacturing center and a repair shop in its industrial area? The manufacturing center makes parts, and the repair shop can repair and assemble them, so can it theoretically be transformed into an orbital shipyard? ”
"Good fellow, do you mean to build a spaceship directly in orbit? I feel very funny, and I am excited to think about it! ”
"I think it may be a little difficult, after all, it is not a professional space shipyard, it should be more about conducting experiments, at most making some small parts to ensure the maintenance of Tianting itself, or repairing satellites, and other ...... Can it repair the Luna spacecraft? ”
"It's hard to say, it depends on what went wrong with the Moonshot spacecraft, right? If it is a little broken, it should be able to be repaired, but if the engine is broken, the orbital maintenance plant of the Tianting Space Station is estimated to be unable to repair it. ”
"If you say so much, you have to wait until it is completed to know, and I don't know how long it will take for such a large space facility to be built?"
"Fast forward to the completion of the Heavenly Court Space Station, and then the lottery I won the tourist ticket, I can't wait."
When it comes to the specific construction process, this does cause many people to worry, after all, there are examples of the International Space Station in the past.
It was built by a dozen countries in collaboration and took more than a decade to build.
If Heavenly Court is like this, and even takes longer because of its larger size, wouldn't the daylilies that were waiting for it be cold?
Nowadays, people are generally impatient, and they are eager to come up with a plan today, and the finished product will be made tomorrow.
Of course, now that technology has advanced, and there is the participation of the navigator, it should not take that long.
However, it doesn't seem easy to calculate the space transportation equipment that the Navigator and Tianxia have now.
The orbital shuttle can easily transport things into space, and people now know it, but its cabin is too small, and only small parts and a small amount of raw materials can be transported.
More than two tons is too little.
Moreover, building a huge Tianting space station with small parts and raw materials is not as simple as building blocks, and astronauts must perform a lot of spacewalks.
When it comes to astronauts' spacewalks, it takes even longer.
As far as the current human technology is concerned, the method of building space facilities that requires welding in science fiction movies can only continue to be carried out in science fiction movies.
Therefore, the most suitable job of the rail shuttle is to transport people.
So the best way to build the Tianting space station is to build various modules on the ground, and then use rockets to transport them to space orbit to "build blocks", which is the space facility construction plan that human beings are currently familiar with.
At present, the rocket that can be used by the Navigator is the Yuanhang super-heavy rocket, and the Chuhang rocket has been decommissioned, and the technology has been sold to other space companies.
The rockets that Tianxia can officially use are the recycled version of the Long March 9 and the recycled version of the Long March 5, and the other rockets are too small.
The Long March 9, in particular, is very important for the construction of large space stations, as it can use a fairing with a diameter of 10 meters.
It's just that the navigator has made a core-stage rocket with a diameter of 5 meters fly into the sky with a fairing with a diameter of 15 meters, and you can know that the fairing of the Long March 9 rocket is not enough, the Tianting space station is too big, and it is always good to be able to transport multiple modules at a time, and the modules in the Tianting structure are indeed huge.
So there will definitely be a need for a larger rocket, larger than the Long March 9.
Tang Chao also knows this, and he will build a manned spacecraft to Mars in the future, and the simulated gravity cabin will definitely have to be used.
This time, a small gravity cabin for the test was carried out, with a diameter of 30 meters when unfolded and 15 meters when folded.
Then after building a Mars spacecraft, the diameter of the gravity module must be expanded, and the diameter of the folded must also be expanded, and the Yuanhang is estimated to be enough to choke, and the fairing larger than the diameter of 15 meters is estimated to really overturn.
The original design of the Long March 9 makes it impossible to fool around like the Yuantu, its fairing is more restrictive, and it is estimated that it can be expanded by about 15 meters, and it cannot transport a larger gravity cabin folding mechanism at all.
Therefore, larger rockets are just needed for early space construction, and the best means of space facility construction is to build them on the ground, and it is best to assemble several modules first, save multiple assembly in space, and then directly transport them to space by large rockets, and then connect them with larger modules.
Of course, astronauts can also be allowed to carry out some auxiliary assembly of the ancestor in spacewalks, but it must be simple, just turn a screw on the outside, insert a slot, connect a wire, etc.
If you make a long gap for the astronauts to weld, it will be embarrassing.
If this weld is not yet straight, but interlaced, then the astronaut has to close himself.