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Analysis of Astronaut’s Tolerance to Landing Impact after Long-term Inhabitation in Space Station
Author(s): 
Pages: 67-72
Year: Issue:  1
Journal: Space Medicine & Medical Engineering

Keyword:  space flightspace stationmanned spacecraftlanding impacthuman tolerance;
Abstract: A series of changes in human physiological functions occurred during long-term inhabitation in the space station,and the human body could ultimately adapt to the weightlessness environment. However,the fluid shift and disappearance of the liquid static pressure of human body resulted in the reduction of the circulation blood volume,and made the cardiovascular system in a lower dynamic state. Bone density and architecture and muscle mass and strength were also altered and sustained worsening. Astronauts would be exposed to the landing impact again upon their return from the space station. Their tolerance to landing impact could decrease as compared with before spaceflight because their bodies were not re-adapted to the earth gravity. Up to now,the degree of decrease in human tolerance to landing impact has not been completely known. On the basis of analysis of the spacecraft landing properties,this paper reviewed the human landing impact tolerance and related influence factors,and summarized the effects of long-term inhabitation in the space station on the human tolerance to landing impact. Finally,the decrease degree of human tolerance to landing impact was analyzed after long-term inhabitation in the space station with the reference of NASA 3001.
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