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In order to maintain the normal "functioning" of various organs and tissues in space, the astronauts of the International Space Station must perform daily physical exercises, such as riding bicycles or pedaling on "moving carpets". Without the constraints of Earth's gravity, astronauts do not move as freely in space as they do on Earth. They need to attach themselves to the station's equipment with ropes and wear special pants to circulate blood from head to toe in order to achieve the same physiological effect as exercising on Earth.
These exercises can basically maintain the normal "operation" of the heart, arteries and other organs, but they cannot prevent bone atrophy. According to statistics, astronauts lose 1 to 10 bones during a space trip, and these bones usually regenerate on Earth for a much longer period than in space. Under normal circumstances, astronauts should insist on at least two hours of exercise every day.
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It is necessary to have relevant safety knowledge training, but also to learn relevant operations, practical operations, relevant drills, and knowledge learning in all aspects on the ground, etc.
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Weightlessness exercises, physical training, improving the flexibility of the nerves, mental health interventions, learning science. This is all very important.
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1. Physical training, to enhance their own physique, gymnastics, ball games, trampoline, swimming, etc. 2. Knowledge training, to learn aerodynamics, flight dynamics, geophysics, meteorology, etc., but also to master spacecraft control, maintenance and repair technology 3, environmental simulation training, focus on more than half a year for specific training for the task.
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They need to go through a lot of exercise and training, they must exercise endurance, they need to simulate the environment of survival in weightlessness, they also need to carry out flight simulator training, so that they can master the control technology, and they also need to master the training about flight during the flight, which can improve their resistance to noise, only in this way can they ensure that they can be safe in space, and finally they can return to land safely.
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In space, astronauts sometimes need to leave the cockpit and go into space to work. It's not as easy as stepping out of the room. Because in all kinds of spacecraft, the temperature and atmospheric pressure are basically the same as on Earth.
Only in this way can astronauts breathe and live freely in the capsule without wearing any equipment. However, even if an astronaut wears a special spacesuit, he or she cannot go directly into space. If we go to space, as we usually do when we come out of the house, no matter how fast the door closes, the air in the cabin will run out.
For this purpose, scientists have developed an airlock cabin. There is a door on each side of the airlock cabin, and after the astronauts put on the spacesuit, they first enter the airlock cabin from the cockpit, and then close the first door between the airlock cabin and the cockpit, so that the cockpit and the airlock cabin are completely separated to keep the spacecraft sealed. The astronauts then depressurize the airlock, and when it reaches the same space pressure as in outer space, the second door of the airlock is opened, and the astronauts can enter space.
When the astronaut returns to the cockpit, just follow the opposite procedure.
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The first is a person with perfect physical indicators. People with fractures in any part of the body, chest surgery, myopia, or scars on their bodies cannot pass the selection of astronauts, because when the plane takes off, astronauts have to bear a lot of acceleration, which can easily lead to an increase in blood pressure, resulting in wound rupture, retinal detachment, etc. In order for astronauts to be able to carry as many scientific instruments and equipment as possible, but also to reduce the load.
In the manned space launch, each additional kilogram of load will cost nearly 100,000 yuan.
The second is the person who has mastered the seven major systems of manned spaceflight. Learn about spacecraft system design principles, aerodynamics, astronomy, celestial mechanics, geophysics, cosmology, aerospace medicine, psychology, anatomy and physiology, foreign languages, and more. Selected, trained and managed.
Eating out is not permitted; It is not allowed to go out in private; No contact with strangers is allowed; not allowed to reveal their identity; Smoking and drinking are not allowed.
The second is to do a good job of physical fitness exercise before going to the malpractice. Astronautics is a special, dangerous, and lonely existence. The exam is not only a wealth of scientific knowledge, but also a physical fitness that surpasses ordinary people.
I once read a report that astronauts not only have to learn more than 30 theoretical courses, but also experience training beyond human limits, which is very affordable. Aerospace work is of great significance, the environment is special, he carries dreams and hopes, and the profession of a soldier is synonymous with excellent qualities such as obedience, bravery, and strength, so it is good to have stronger physical fitness.
In addition, although space technology is now developed, it has not yet reached the level where ordinary people can be sent into space at will. Therefore, the requirements for astronauts are very high. In contrast, the particularity of military personnel, physical fitness, psychology, sense of mission, sense of responsibility, political requirements and many other aspects are more in line with the requirements.
We all know that we are still in the primitive stage of space exploration, and each astronaut will have new special tasks in addition to daily in-orbit tests, core module management regeneration cycles, health management.
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First of all, the physical fitness is not reburied, and there are no scars on the body, and only those with good eyesight can become astronauts. They all need to do some fitness to be able to boost their stamina.
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First of all, the rank of Qihu in the Air Force must be high, and it must pass all kinds of tests, and then it must have a very strong body, and it must also have a very high level of education, and it must have the ability to analyze and solve problems in the face of problems, and it must have the ability to resist vertigo, and it is necessary to overcome the uncomfortable reaction caused by shouting and dressing in the process of high and low air pressure, and it is necessary to enhance physical training, and Zheng Zao must have relevant theoretical knowledge education, and it is also necessary to master survival training and technical training of spacecraft, etc.
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At present, China has only conducted two astronaut selections, and Guess Wang is basically selected from the active Air Force pilots. The astronaut brothers and friends have to go through special training: the first is the adaptability to the space environment, which is the most basic and important training, followed by overweight training and weightless flight training, then immersion training and head lowering training, and finally vestibular function training.
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Astronaut training includes professional basic theory training, physical fitness training, endurance and adaptability training, professional and technical training, flight procedures and mission simulation training, life-saving and survival training, flight slow skills training, psychological training, large-scale joint exercises, etc., which together belong to three major aspects, namely, professional basic knowledge training, vocational skills training and flight mission training. Basic Theoretical Training After being selected into the astronaut corps, the first thing to do is professional basic theoretical training, including the theoretical knowledge required for astronautics, such as space, atmosphere, astronomy, meteorology, geophysics, air dynamics, rocket and spacecraft design principles, spacecraft systems and component structures, navigation and control, communications, telemetry and remote control, mathematics, computers, and foreign languages. In addition, there are contents such as aerospace medicine and physiology.
Through training, they improve their cognitive level and lay the foundation for subsequent training.
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Living on Earth, we need to do the necessary exercises, such as running, skipping rope, swimming, weightlifting, and so on. In the same way, living in space also requires the necessary physical exercise to keep the body alive enough, so is physical activity in the sky the same way as on the ground?
In space, astronauts are in a state of complete weightlessness, that is, astronauts are provided by the gravitational force of the earth to provide astronauts with the centripetal force needed to move around the earth in a uniform circle, astronauts are in a floating state in the space station, if they want to walk, they must pass through the straps fixed in the cabin, and they must sleep in a fixed sleeping bag when sleeping.
Like astronauts, other items in the space capsule are also in complete weightlessness, if you place a balance in the space capsule, put an item to be weighed at the left end of the scale, and put a weight at the right end of the scale, the balance is always balanced, because the objects or weights on the left and right sides are not forceful to the balance, and because of this, in the space capsule, the mass of the astronaut cannot be measured with a weight meter.
According to the above analysis, it can be known that if the astronaut is trained to lift dumbbells in the cabin, it is ineffective, and in space, everyone is a weightlifting champion, because the barbell has no pressure on people, and people cannot feel the gravity of the barbell, so that the physical exercise related to gravity is not allowed, and skipping rope is also not good.
Physical exercise that has nothing to do with gravity can be a tension device, the tension device is made of multiple springs in parallel, and one spring, two springs or even more can be selected according to the size of the force, in the process of pulling the spring tensioner, it is the astronaut who has a pulling effect on the spring, so the spring is elongated, which has nothing to do with the gravity of the spring. Naturally, if you jump in the capsule, you will reach the top of the capsule, and the jump will be effortless, and if a high jump competition is held in space, everyone will be a high jump champion.
The completely weightless environment of space is very different from the ground, and physical exercise is one of them!
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They have their own workout area, they have bikes, they have treadmills, and they are also able to provide a very nutritious diet.
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A special exercise area has been set up in space, equipped with space treadmills, space bikes and other equipment, which can be used for astronauts' daily exercise.
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They have dedicated workout areas with some equipment in them where they can work out their bodies.
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Astronauts need to undergo training before they go to the sky, including sleeping, eating, etc., before they can go to the sky.
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Due to the particularity of the space environment, astronauts need to conduct simulation training on the ground before performing space missions.
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What kind of training do astronauts need to go through before they go to space?
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Brush the score in the ......Please ignore me and continue the discussion. to eliminate the fear of weightlessness. Under the condition of weightlessness, the training to put on and take off spacesuits, walking, moving heavy objects, and local laser welding protection levels are as high as the housing prices in Fujian are high.
A bit of an unofficial big brother.
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You have to be trained by the devil! Pick to pass!
Yang Liwei, Shenzhou 5 spacecraft.
How do astronauts wash their hair in space? Carry.
Fei Junlong, Nie Haisheng, I don't know if it's these words.
No, the universe is dark except for some luminous objects. Day and night are the day-night cycles due to the rotation of the earth, with day on the side of the sun and night on the back. This is a phenomenon of the earth.
The astronaut in space, Wan Jing, will continue to reduce his altitude under the action of slight resistance in space, because there is no attitude adjustment and power propulsion system on it, it can only gradually accelerate into the atmosphere, and in the friction with the atmosphere to produce high heat and burn up. >>>More