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在长期空间站驻留期间,人体生理机能会发生一系列的改变,机体最终会适应这种失重环境。但是流体静压消失使机体的有效循环血量减少,并且心血管系统处于一种低动力状态,重力消失导致的骨丢失和肌肉萎缩将持续进行。在航天任务结束后返回地面的过程中,航天员会再次受到着陆冲击过载的作用,此时机体尚未完成对重力的再适应过程,因此其耐受性会比航天飞行前有所降低。但到目前为止,其降低的程度还不完全清楚。本文在总结飞船着陆冲击特点的基础上,综合分析人体着陆冲击耐力及其影响因素,以及长期空间站驻留机体的变化对着陆冲击耐力的影响,并借鉴NASA3001标准,分析了长期空间站驻留后航天员着陆冲击耐力下降的程度。
During the stay of the space station, a series of changes have taken place in the physiological functions of the human body, and the body eventually adapts to such a weightless environment. However, the disappearance of hydrostatic pressure to reduce the body’s effective circulating blood volume, and cardiovascular system is in a state of low power, loss of gravity caused by bone loss and muscle atrophy will continue. During the return to the ground after the space mission, the space crew will again be affected by the impact of landing shocks, at which time the body has not yet completed the process of re-adaptation to gravity and therefore its tolerance will be lower than before the space flight. However, the degree of reduction has not been fully understood so far. Based on the summary of the impact characteristics of the spacecraft landing, this paper analyzes the impacts of landing impact endurance and its influencing factors, and the impact of long-term space station resident body changes on landing impact endurance, and draws on NASA3001 standards, analyzes the long- The extent to which a crew landing impact stamina drops.