The discovery of supernatural materials made the space elevator from science fiction to reality.

Space elevators can often be seen in science fiction movies, which are connected to the universe from the ground. It was first put forward by Konstantin Tsiolkovsky, a famous Russian space scientist. He visited the Eiffel Tower on 1895 and came up with the idea of a space elevator. He has never been to school, and all his knowledge is taught by himself. He calculated the first space velocity and designed the initial rocket model. He also famously said that the earth is the cradle of human beings, but people can't live in the cradle all the time.

When the space elevator was first proposed, it was just an idea. It was not until 1960 that Yuri A Qiu Tanov, a Soviet engineer, concretized this idea and put forward some possible schemes. His idea is that there is a circular orbit 36,000 kilometers above the ground, which is called geostationary orbit. In this orbit, all satellites are stationary relative to the earth.

Send a satellite to geostationary orbit, and then extend a rope from the satellite to the ground, but there is a problem that the whole center of gravity will move down after the rope hangs down, which will make the satellite leave this orbit, so it is necessary to extend a rope in the opposite direction. But if you just extend the same distance and keep balance, pulling the rope on this side of the earth will fall, so it will extend about 654.38+ 10,000 kilometers.

The theory seems simple, and many countries have begun to try it, but after 30 years, no country has made any progress. Because of the material used for this rope, ordinary steel is not enough. If the weight of steel is too large, the length will break due to the weight. It was not until 199 1 that Japan made a breakthrough.

A physicist at NEC Laboratory in Tsukuba, Japan, found carbon nanotubes in carbon fibers. Carbon nanotubes are naturally generated, but they do not conform to the laws of nature, and are also called supernatural materials. Theoretically, it is impossible for the natural environment to produce this kind of thing, but it exists, so we wonder if there is an alien advanced civilization left here. This material is characterized by ultra-light, ultra-hard and certain flexibility. A car can be hoisted, and if it is intertwined, the strength can reach more than 1 times the strength required by the cosmic elevator.

However, this material cannot be mass-produced. It is a substance with a molecular structure. Theoretically, it is difficult to connect it molecule by molecule, and it is difficult to achieve 65438+ million kilometers long. But now it seems that Japan may have a major breakthrough in this technology. Japan's Dalin Group Construction Company announced on their company's homepage that it will realize the space elevator in 2050.

What are the benefits of space elevators, so difficult to achieve? The most important thing is that it can replace rockets. The only way to leave the earth now is the rocket. The cost of rockets is too high, and most rockets are disposable. So even now, the failure rate of the rocket is still quite high, and then the rocket will still be in space after it reaches space, which is not environmentally friendly. And the efficiency of the rocket is very low.

Space elevator is a good choice when looking for alternatives to rockets. First of all, the space elevator is safer, and it can use electricity, and the consumption is not that big. At first it uses electricity when it rises, and then it can convert kinetic energy into potential energy. After it exceeds the stationary orbit, centrifugal force can be used, and electricity is basically not used in the second half. When it returns, it can use electricity at first, and then it only needs to slow down when it enters free fall.

According to the calculation of Dalin Group, if a space elevator is built, the cost of space travel will be greatly reduced and most people can afford it. And space elevators don't produce space junk.

According to the calculation of Japan Space Elevator Association, it costs about 654.38+000 billion dollars to build a space elevator.

The head of Japan Dalin Group said that they will start the construction of this project in 2030, so several problems should be solved before 2030. One is 6.5438+10,000 kilometers of carbon fiber pipes, and then the strength of 6.5438+10,000 kilometers of carbon fiber pipes should be tested, and the wireless energy transmission technology of 6.5438+10,000 kilometers should be realized.

If the wireless transmission technology of 6.5438+10,000 kilometers can be realized, it may be better than the cosmic elevator, and there is no need for electric towers in the future.

If the space elevator can be realized, it will move to space in the future and build the robotech. If it can be realized, it can be copied to the moon and Mars.

Another function of the space elevator is to let people bring the matter in the universe back to the earth. At present, only a few substances in the universe can be brought back by spacecraft, and the amount they can carry is very limited.

Space elevator is a thing full of dreams and future.