According to the China Manned Space Engineering Office, the Chinese astronaut crew has completed its first handover in orbit, and the Shenzhou XIV crew will return to the Dongfeng landing site today. At present, Dongfeng landing site and all test systems have also been ready to welcome astronauts home.
When the space station about 400 kilometers from the ground returns to the earth, what will the astronauts who are used to floating in space feel when they regain gravity? What kind of test will the body undergo? In addition, how can the staff on the ground help them re adapt to the gravity of the earth? Let's listen to the introduction of experts ↓↓
According to experts from the Astronaut Research and Training Center, the three astronauts stayed in orbit for six months, which is a long-term stay in orbit. Returning to the earth after such a long cycle is a comprehensive test of human physiological functions.
Xu Chong, Director of Astronaut Medical Supervision and Medical Insurance Office of China Astronaut Research and Training Center: We call it gravity readjustment. Every organ system of the body from top to bottom should adapt to the gravity environment, such as vestibular system, skeletal muscle system, cardiovascular system, balance function, muscle coordination, including changes in the distribution of the whole body fluid. We know that when on orbit, The body fluid is distributed in the head direction. When it returns to the earth, the whole body fluid returns to the lower limbs, so it has different impacts and challenges on various organ systems of the whole human body.
In order to help the three astronauts adapt to the gravity environment of one G of the earth more quickly, the ground staff should take a series of measures at the first time when opening the hatch to promote the recovery of the astronauts' physical functions.
Xu Chong, Director of the Astronaut Medical Supervision and Medical Insurance Office of China Astronaut Research and Training Center: When returning to the ground, we medical supervision and medical insurance personnel should help the astronaut adjust his position and give him oral rehydration, so as to promote his whole rapid gravity adaptation. Then, beside the cabin, we have a special astronaut lift seat for the recovery of long-term astronauts after returning. This seat has many new functions, including adjusting the astronauts to a more suitable position, promoting gravity re adaptation, and then going to the medical supervision and medical insurance carrier. We also have a series of follow-up measures to complete the first leg, fast gravity re adaptation.
In view of the fact that the landing site is in winter and the climate is cold, the crew has also adjusted and optimized the astronaut exit procedures and support equipment.
Xu Chong, Director of the Astronaut Medical Supervision and Medical Insurance Office of the China Astronaut Research and Training Center: In terms of the overall process, it is still to optimize and reduce the exposure time of astronauts in cold environments. From the perspective of equipment, we have newly developed the entire thermal insulation device of astronauts, and at the same time, we have also improved the function of seats. The carrier of the medical supervision and medical insurance vehicle has multiple functional modules, including the environmental temperature control inside, which makes the sailors feel warm and warm. On it, we will carry out a series of medical examinations, medical assessments, and some means of recovery.
Experts said that the three astronauts would have to undergo a half year recovery training after returning, and after careful observation and evaluation, they would turn to normal training.
