摘要
火星表面低压和低温的大气条件意味着传统的热真空试验设备不能满足火星探测任务型号的地面模拟试验需求.为此,设计研制了以CO2为气体氛围的火星环境模拟系统.采用气氮调温解决了罐体结露的问题,并采用移动压力控制系统保持在试验温度范围内CO2气体状态和压力稳定.该系统已成功用于多个火星探测器型号部件产品的地面模拟试验,为火星探测任务开展提供了支持.
In view of the fact that the traditional thermal vacuum environmental simulation facility can not satisfy the requirements for reproducing the low-pressure and low-temperature atmosphere on the Mars surface,a ground environment simulation system with a satisfactory gaseous CO2 atmosphere is designed.The use of GN2 as the temperature-adjusting medium prevents the moisture condensation on the outer wall of the vacuum chamber,and the combination of a movable pressure control system and a gas charging&discharging system keeps the CO2 in a gaseous phase and in a steady pressure against the temperature cycling during the whole simulation test process.The developed system has been applied in a number of ground simulation tests of component products for the Mars explosion missions,to deliver support for the implementation of relevant missions.
作者
陈安然
张立海
臧建伯
马楷镔
任峥
李芳勇
CHEN Anran;ZHANG Lihai;ZANG Jianbo;MA Kaibing;REN Zheng;LI Fangyong(Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China)
出处
《航天器环境工程》
2019年第4期398-402,共5页
Spacecraft Environment Engineering
关键词
火星大气
CO2气体氛围
环境模拟
压力控制
防结露
Mars atmosphere
gaseous CO2 atmosphere
environmental simulation
pressure control
prevention of dew
