摘要
长期载人航天中必须突破的关键技术是水和氧气的循环再生。微重力下,水和氧气的循环再生首要解决的问题是气液两相流的分离。空间动态水气分离器利用离心力原理实现气液分离,但由于地面无法长时间模拟微重力环境,因而无法评价动态水气分离器在失重条件下的工作性能。2010年3月利用法国NOVESPACE Airbus A300 ZERO-G失重飞机,对空间动态水气分离器的水气分离效果进行了研究。结果观察到抛物线飞行过程中,分离液体中的含气率变化总体效果与地面重力条件下一致;而分离气体中观察到可视液滴,与地面重力条件下无可视液滴的结果不同。说明空间动态水气分离器的工作性能受重力影响,地面评价方法还需进一步完善。2012年10月再次利用法国的失重飞机,对改进后的动态水气分离器进行了搭载试验,结果显示分离性能已满足要求,验证了改进方法的正确性。
The major challenge for Environmental Control and Life Support System（ECLSS） to be used in future China space station is the Regenerative ECLSS.Separation of a two-phase gas/liquid flow stream under microgravity condition is a key technology.A Space Rotary Gas/Liquid Separator was designed,fabricated and tested by Astronaut Center of China（ACC）,as part of the Environmental Control and Life Support System（ECLSS）.To evaluate the performance of such a rotary separator,a microgravity experiment of Space Rotary Gas/Liquid Separator was carried out on the French NOVESPACE Airbus A300 ZERO-G in March 2010.The phase separation performance,the start-stop operation and the results to liquid carryover under various gas flowing were evaluated in microgravity environment.The problem of liquid water found in the gas tube was identified and the direction of modification was given.A follow-up flight test was conducted in October 2012 and the effectiveness of modification was verified.
出处
《载人航天》
CSCD
2015年第3期212-216,共5页
Manned Spaceflight
关键词
动态水气分离器
抛物线飞行试验
两相流
空间生保系统
微重力
dynamic gas/liquid separator
parabolic flight test
two phase flow
space life support system
mierogravity
