On October 4, 1957, the first man-made satellite in the history of human civilization was successfully launched, marking the official opening of the era of space exploration. In 1961, the first astronaut went to space. Since then, the era of rapid space development has begun.
Astronauts into space, want to work more safe and stable, you need a docking station, and this docking station is the space station. For mankind who has just entered the era of space exploration, a space station is of great significance. Only with a space station in earth orbit can our astronauts stay in space for a long time and complete a series of space experiments and observations.
Realizing the importance of the space station for human exploration of space, the United States first proposed the construction of the international space station in the 1980s, and then 11 countries from all over the world cooperated to complete the construction in 1993. This is the largest space project of human contemporary.
Since the international space station was put into use, it has brought great benefits to mankind. A lot of space experiments and observation data are carried out through the international space station. We often see news about the international space station on the Internet, and even now there is a live broadcast of the international space station, so that ordinary people can really see the work and life of astronauts on the space station.
When we see astronauts leisurely doing all kinds of work in the space station, a question emerges: how does the oxygen come from the international space station? We all know that human beings like oxygen and can’t live without oxygen for a moment. When we were on earth, there was oxygen in the atmosphere and people could breathe freely.
But after leaving the earth, space is a vacuum environment without oxygen. If astronauts want to work and live in the international space station for a long time, they can’t do without sufficient oxygen supply. How does the oxygen come from? Some people may say, isn’t this a very simple question? Of course, the oxygen in the space station is transported directly from the earth by rocket. Is that really the case?
In fact, this understanding is not entirely correct. The international space station is equivalent to a small ecosystem. Oxygen is an essential material, and if the oxygen is directly transported from the earth by rocket, it needs to face many problems. First of all, the transportation of oxygen needs a solid tank, which takes up a lot of space and mass.
However, the space transportation capacity of mankind is not very strong. When transporting materials, we have to carry out strict selection. It is the important responsibility of rocket transportation to transport more important materials in limited space. The oxygen tank will occupy a lot of transportation space, which will increase the transportation cost. Secondly, pure oxygen extraction is dangerous and costly, and the compressed oxygen is not suitable for human direct breathing.
It can be seen that it is a very unrealistic idea to directly transport compressed pure oxygen from the earth to the international space station. Naturally, scientists have not adopted such a way. How can the oxygen supply of the international space station be realized? At this time, scientists thought of electrolytic water. We all know that water is the source of life. From a microscopic point of view, it is composed of hydrogen and oxygen atoms.
Hydrogen and oxygen can be obtained by ionizing water, and then the oxygen is released into the space station to meet the daily breathing needs of astronauts, while hydrogen is collected for other purposes. In order to achieve such ionized water, we need an oxygen ecosystem. For this reason, scientists have specially developed an oxygen ecological device suitable for the international space station.
The device has high oxygen generation efficiency, producing 12 pounds of oxygen per day, which can be used by 10 people. Generally speaking, the space station has three astronauts stationed for a long time, and there will be six astronauts during the handover. The oxygen is enough for three astronauts.
In addition, the system can also increase the production of oxygen in case of emergency, up to 20 pounds per day. At the same time, the international space station is also equipped with an efficient air filtration system. After separating the exhaled carbon dioxide, the carbon dioxide reacts with hydrogen to generate water and methane. Methane is directly discharged, and water is used for water circulation or electrolysis to produce oxygen. Including ammonia, hydrogen sulfide and garbage gas generated by instrument operation will be thoroughly filtered.
I believe many friends have heard about such an advanced oxygen generation system for the first time. Indeed, in our daily life, we can hardly see such an advanced oxygen generation system. It is generally applied in some cutting-edge scientific fields, especially in the aerospace field. The aerospace field is a collection of the most advanced human science and technology.
We can see from the equipment of the space station and the equipment of the astronauts that many things are the most advanced of human beings. Once human beings have developed any advanced technology, it is often the priority to apply it to space exploration. Only with the update of advanced equipment can human space exploration be more smooth, and we can continuously acquire more knowledge about space.
As an important transit station for human to enter space, the international space station will play an increasingly important role in the future. In particular, in the coming decades, human beings will successively launch the lunar and Mars missions. Whether it is a manned mission to the moon or Mars, if we go directly from the earth, the cost will be very high and the safety will be reduced.
But if it is from the space station to transit and then start, then the security will be much higher. Especially for the future manned exploration of Mars and even the establishment of bases on it, we can not do without the transit of the space station. However, the current international space station equipment has been aging and is facing the situation of elimination.
When the current international space station is eliminated, the only remaining space station in earth orbit may be China’s space station. I believe many friends know that China’s space technology has developed very fast in recent years. We have not only explored the front and back of the moon, but also, more importantly, we are stepping up the construction of our space station.
You know, in the last century, the international space station was built by 11 countries. At that time, because China’s space technology was still relatively backward, China did not join in the construction of the international space station. Now the space station in our country is a large-scale space station built by our country. Once completed, it will become the only space station in space. At that time, the international space station also came to an end, and China’s space station will be on the stage.
In the last century, space exploration was led by the United States, while in this century, China’s space station will lead mankind forward, and China will become a new human space leader. This is the pride of being a Chinese and every Chinese.
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