Title :
Two-phase active thermal control systems for spacecrafts
Author :
Ing Youn Chen;M.-C. Chyu
Author_Institution :
Dept. of Mech. Eng., Nat. Yunlin Inst. of Technol., Taiwan
Abstract :
The lower mass flow rate for a two-phase system compared with that of a single-phase system results in benefits in terms of reduced pumping power, system size and weight. The design and testing of two-phase fluid thermal loops for future large spacecraft has been conducted at NASA Johnson Space Center since 1982. This report presents a review and summary of the two-phase thermal system test results of Grumman Thermal Bus System, Lockheed Ground Test Unit and Boeing/Sundstrand Ground Test Article (GTA) Space Station prototypes, which were tested from 1987 to 1993. The thermal-hydraulic performances of the two-phase thermal buses are briefly described and comparison of three bus test results is made. The advantages of the selected thermal bus (GTA) are described.
Keywords :
"Control systems","Space vehicles","System testing","Fluid flow control","Pumps","Thermal conductivity","NASA","Space stations","Prototypes","Performance evaluation"
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.553948
