期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Temperature Responses to External Heat Fluxes of the Power Distribution System on Alpha Magnetic Spectrometer
1
作者 YANG Fei DU Wenjing +2 位作者 MEDVEDEVA Tatiana CHENG Lin SUN Qie 《Journal of Thermal Science》 SCIE EI CAS CSCD 2022年第3期802-815,共14页
High-temperature warnings frequently occurred at the Power Distribution System(PDS)of the Alpha Magnetic Spectrometer(AMS).To investigate the fundamental reasons,a theoretical model for the AMS PDS was established und... High-temperature warnings frequently occurred at the Power Distribution System(PDS)of the Alpha Magnetic Spectrometer(AMS).To investigate the fundamental reasons,a theoretical model for the AMS PDS was established under the International Space Station(ISS)normal and special operating conditions.With the model,the study investigated the external heat fluxes and the temperature responses of the PDS.The effects of ISS special operations on the PDS’s thermal environment were also investigated.Results reveal that the total external heat flux at the PDS reaches its maximum value when the angleβis around–25°,where high-temperature warning frequently occurs.Under the ISS normal operating condition,the temperature response hysteresis at the PDS varies from 116 s to 230 s.When the ISS performed special operations,locking the ISS solar arrays had the greatest influence on the PDS’s external heat fluxes,and the average temperature at the PDS fell by 1.7°C.When the ISS performed multiple special operations,simultaneously locking the ISS solar arrays and adjusting the ISS flight attitude were the most frequent operations,of which the influences on the PDS temperature were the largest,i.e.,the changes in peak temperature reached up to+2.5°C. 展开更多
关键词 external heat fluxes temperature responses alpha magnetic spectrometer international space station spatial thermal environment
原文传递
Operation characteristics of AMS-02 loop heat pipe with bypass valve 被引量:6
2
作者 WANG NaiHua Joseph BURGER +6 位作者 LUO Feng CUI Zheng XIN GongMin DU WenJing SONG JiWei CHEN Yan CHENG Lin 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第7期1813-1819,共7页
Loop heat pipes (LHPs) were designed for the alpha magnetic spectrometer (AMS-02) to dissipate heat from the cryocoolers. A bypass valve is applied to the LHP to keep the cryocooler temperature above its limit (... Loop heat pipes (LHPs) were designed for the alpha magnetic spectrometer (AMS-02) to dissipate heat from the cryocoolers. A bypass valve is applied to the LHP to keep the cryocooler temperature above its limit (-20℃) in cold environment. Extensive experiments were performed on operation characteristics of LHPs with the bypass valve for AMS-02 during thermal vacuum and thermal balance (TVTB) test. We found that the bypass valve can start up successfully in cold environment. With the bypass valve, the evaporator temperature is stable and can meet the requirement of the cryocooler. We analyzed three operating modes of the bypass valve. Set point temperature and regulation temperature shifts were observed and their relations with the bypass valve temperature were given. 展开更多
关键词 alpha magnetic spectrometer loop heat pipe bypass valve operation characteristic
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部