人体对三级起飞加速度的反应

航天员在飞船起飞时,常会遇到二级或三级加速度作用.为了解这种类型加速度对人体的影响,在人体离心机上,在背角为15°情况下,十名健康的青年被试者承受了峰值分别为+4Gx、+6Gx和+5Gx、每级作用时间为150秒的三级加速度作用.实验中记录了被试者的心电、血压、心振动图、脑阻抗图和呼吸情况,分析和讨论了某些重要的生理指标的变化.结果表明,被试者的主观感觉是良好的,生理指标变化处于正常代偿范围之内,较好地耐受了上述三级起飞加速度的作用. 

Human Reactions to Three Stage Launching Acceleration

Three or two stage acceleration profiles are often encountered by astronauts during launching of space vehicles. In order to study the effects of this type of acceleration on human body, ten healthy young subjects were exposed to a three stage acceleration profile on a human centrifuge with a back angle of 15. The three stages lasted 150 seconds each, with successive peak of 4.6 and 5Grespectively.Electrocardiogram, blood pressure vibro-cardiogram, rheoencephalogram and respiration were recorded. Analysis and discussion of change of some important physio-logical parameters were made. Results showed that subjective feelings of the subjects were fairly good. Changes of the physiological parameters were within the range of a compensatory requlation. All subjects tolerated this profile of acceleration successively.