Air filters are used in a wide range of applications, including of course in aerospace applications. Because there are outer space, such as Mars, if humans directly contact them, it will cause great harm to human body.
The damage of the Martian atmosphere to the human body is mainly concentrated in three aspects: floating dust, electrostatic discharge and dust storm. A major feature of Mars air is the large amount of floating dust. The hazard of this kind of floating dust is mainly the wear and tear of the astronauts' mechanical equipment, which seriously affects the airtightness of the Mars suit. If the air filter is used in the spacecraft's dwelling cabin, it is easy to infarct because of the environment; affecting the astronaut's vision, If the floating dust falls on the window of the garment or on the optical instrument, it will affect the astronauts' observation. In addition, this floating dust will also affect the temperature change of Mars and accumulate a large amount of static electricity in the Martian environment, so how to choose an air filter is also important.
Mars dust is highly invasive. This intrusiveness depends on the size, hardness and shape of the dust particles. When the astronauts were out of the cabin, although the astronauts were dressed in advanced Mars suits, although there were well-equipped life support systems and air filters in the spacecraft's dwellings, the astronauts lived and worked on Mars for a long time. A lot of Mars floating dust. After the astronauts return to the cabin, they may bring the dust back to the dwelling house, and even contaminate the food, which is then digested and absorbed. According to current research, there are many toxic substances in the soil and floating dust of Mars, such as toxic metals, asbestos and organic compounds. The most common toxic metal is hexavalent chromium, which is a very toxic substance, in addition to arsenic, cadmium and antimony. Scientists have discovered that after astronauts inhale these toxic substances on Mars, the lighter may have lung cancer or other lung tissue damage, and the severe may have cancer. Therefore, living and working on Mars for a long time, the safety and well-being of astronauts is a big problem that needs to be discussed first.
Nowadays, with the development of science and technology, scientists have invented an air filter that is more suitable for use in the spacecraft cabin, and overcomes several shortcomings, which has played a very good role in protecting astronauts.
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