Design,analysis and verification of hand temperature control for extravehicular activities
Shang Kun
Liu Xiubin
Wang Hailiang
Zhou Biyun
Jia Ruixi
Zhu Ye
Abstract：During long-term extravehicular activities(EVA),there have been multiple instances of localized discomfort due to cold extremities such as hands and feet.The primary reason is that the design of space suit gloves prioritizes maximizing operational flexibility,which leads to reduced passive thermal protection in certain areas.Insufficient local thermal protection can cause the hands to lose metabolic heat in cold environments over time,resulting in cold stress.Therefore,it is necessary to conduct research on temperature control technology to meet the thermal comfort requirements of astronauts' hands during EVA.Effective active temperature measures can expand the range of low temperature working environments that astronauts' hands can adapt to during EVA,enhance hand thermal comfort,and ensure hand operational capabilities,preventing excessive cold from exceeding medical requirement and affecting extravehicular missions.This paper combines the metabolic heat generation patterns of the human hand to analyze the temperature control requirements for extravehicular gloves,simulate and optimize the layout of electric heaters,and evaluate the feasibility of the electric heating system for extravehicular gloves by building a thermal simulation model.Through prototype vacuum thermal testing,comprehensive verification of the temperature control module for extravehicular gloves was achieved,demonstrating the effectiveness of the temperature control system.
Keywords：extravehicular activitiesthermal comforthandtemperature controlspacesuit glove
Publication Date：2025-04-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 183-188 )