舱外航天服手套加热方案探讨

RESEARCH OF EMU GLOVE ACTIVE HEATING SYSTEM

针对舱外作业中航天员常常因手冷而不得不提前回舱的情况 ,提出了主动加热的方法。利用边界元法以边界点上未知函数满足积分方程为基础进行近似计算的特点 ,建立了手部和舱外航天服手套温度场三维计算模型 ,通过模拟试验件验证了模型。模型针对航天员处于太阳和地球辐射阴面时提出了舱外航天服手套主动加热的优化方案 。

An active heated gloves method was brought forward to develop space suit assembly (SSA) gloves of astronauts who often have to come back to the vehicle for the chilled hand during an extravehicular activity (EVA). The boundary element method (BEM) was utilized to make calculation simple and to get a three-dimensional temperature field easily, since it has one characteristic that the approximate calculation is only based on unknown functions on the dots of the boundary fulfilling integral calculus equations. The temperature field model of finger and EVA spacesuit glove was proved through experiment. An optimal heated scheme, which was proved by the experiment of a heated stimulant glove, was supplied to deal with the chilled hand during EVA shadowed from the sun and the earth.