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为探讨中长期空间飞行(30 d以上)后飞船应急返回对机体超重耐力的影响及防护技术,首先选用42只健康雄性成年猕猴,随机分为4组,进行中长期模拟失重再超重的病理生理影响及其机理研究;之后选22名健康被试者,随机平均分为2组,分别穿着绳索拉紧式和充气式抗荷服,测定各自选定的高低2种压力制度时的下体负压耐力;最后选8名健康志愿者,测试在不穿抗荷服、穿着绳索拉紧式和充气式抗荷服三种状态下承受超重过载时的生理反应。实验表明,高+Gx作用,使猕猴脏器出现病理性损伤,相同G值猕猴头低位卧床后再超重组引起的病理损伤要比单纯超重组严重;绳索拉紧式抗荷服和充气式抗荷服可以提高人体下体负压耐力和超重耐力。
In order to explore the effect of spacecraft emergency return on long-term space flight (over 30 d) and its protection technology, 42 healthy adult male rhesus monkeys were randomly divided into 4 groups for simulated mid-to long-term weightlessness and then overweight pathophysiology Influence and its mechanism; after that, 22 healthy subjects were randomly divided into two groups, wearing rope-tightened and inflated anti-G clothing, respectively, to determine the two kinds of high and low pressure system selected lower body negative pressure Endurance; finally selected 8 healthy volunteers, the test does not wear anti-Dutch clothing, wearing a rope tightened and inflated anti-Dutch clothing under three conditions to withstand overweight when the physiological response. Experiments show that the high + Gx role in the pathogenesis of pathological lesions in Macaca mulatta, the same G value of low head lying in bed and then overweight group pathological injury caused more serious than the simple overweight group; rope tightened anti-service and inflatable anti-clothing Costumes can improve the body’s lower body endurance and overweight endurance.