CAJ | 학술논문

目的探讨载人舱室适宜的预冷温度,以预防或减缓发射、返回段航天器内高温对人体的不利影响. 方法 5名健康男性青年按着航天服时不通风和以通风流率100 L/min(STPD)通风等不同着装条件,在舱温15、l0、5℃环境中进行25人次实验.测量直肠温度(Tr)、平均皮温(Tsk)和平均体温(Tb)等热生理指标. 结果在舱温15℃航天服通风和不通风状态,实验2 h内人体直肠温度降低不显著(从初始值37.0±0.2℃降为36.7±0.3℃),平均体温、平均皮温显著降低(P＜0.05),受试者有局部的冷紧张;而在舱温和通风温度10℃时,受试者热生理指标随时间延长不断降低,直肠温度从37.0±0.3℃显著下降至36.3±0.3℃,Tsk、Tb显著低于初始值(P<0.05),受试者有全身性冷紧张. 结论按人体热舒适状态无显著改变的要求,航天器座舱预冷后维持15℃气温对人体较为适宜.
목적탐토재인창실괄의적예랭온도,이예방혹감완발사、반회단항천기내고온대인체적불리영향. 방법 5명건강남성청년안착항천복시불통풍화이통풍류솔100 L/min(STPD)통풍등불동착장조건,재창온15、l0、5℃배경중진행25인차실험.측량직장온도(Tr)、평균피온(Tsk)화평균체온(Tb)등열생리지표. 결과재창온15℃항천복통풍화불통풍상태,실험2 h내인체직장온도강저불현저(종초시치37.0±0.2℃강위36.7±0.3℃),평균체온、평균피온현저강저(P＜0.05),수시자유국부적랭긴장;이재창온화통풍온도10℃시,수시자열생리지표수시간연장불단강저,직장온도종37.0±0.3℃현저하강지36.3±0.3℃,Tsk、Tb현저저우초시치(P<0.05),수시자유전신성랭긴장. 결론안인체열서괄상태무현저개변적요구,항천기좌창예랭후유지15℃기온대인체교위괄의.
Objective To explore a space craft precooling temperature at which excessive thermal stress on the crew member could be prevented or reduced in an overheated launch or reentry module. Method Five young male volunteers wearing a space suit participated in 25 tests at sea level.The space suit was either ventilated in a volume air flow rate of 100 L/min (STPD) with ambient air at temperatures (Ta) of 15℃,10℃,and 5℃,respectively,or not ventilated. Rectal (Tr),mean skin (Tsk) and mean body (Tb) temperatures were measured. Result At Ta 15℃,Tr decreased without significance (from 37.0±0.2℃to 36.7±0.3℃) in 120-min tests,whereas Tsk and Tb decreased significantly,and subjects had local cold strain whether the space suit was ventilated or not; while at Ta 10℃,Tr decreased from 37.0±0.3℃ to 36.3±0.3℃(P<0.05),subjects had a whole body cold strain,and both Tsk and Tb dropped continuously and significantly. Conclusion Ambient temperature 15℃,at which the thermal comfort states of crew was not significantly degraded,was acceptable after precooling in a space craft.