可展桁架天线在轨运行中温度场分析
doi: 10.11728/cjss2008.06.567 cstr: 32142.14.cjss2008.06.567
Thermal Analysis of Deployable Truss Antenna in Orbit
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摘要: 利用热传导辐射理论,并引入天线所处的轨道条件。可计算可展桁架抛物面天线在轨运行时不同时刻的温度场.利用Fortran语言,编制了基于上述理论的有限元程序,可计算各种轨道条件下不同时刻天线的温度场.还可用于指导天线的热变形分析和热控制设计.Abstract: Using conduction-radiation theory, considering the orbit of the antenna, temperature fields of a deployable truss parabolic antenna in orbit can be calculated at different local time. Using Visual Fortran, a finite element program based on the theory above is built, and temperature fields of antennas in different orbits can be calculated at different local time. The result is useful to thermal displacement analysis and thermal control design.
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Key words:
- Deployable truss antenna /
- Temperature field /
- Orbit
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