Abstract
In order to obtain a lightweight and high-stiffness main supporting structure of Space Remote Sensor, Main supporting structure of Space Remote Sensor with TMA optical systems were studied by way of Finite Element Method (FEM).The stiffness of the supporting structure was validated with normal modes analysis. In order to improve its fundamental frequency (the first order natural frequency), a topologic optimization design method of Space Remote Sensor was presented. Modal analysis parameter is optimized and the best material distribution is searched. Based on the analysis above, main supporting structure with high stiffness of the Space Remote Sensor is designed. The analysis results indicate that the fundamental frequency of Space Remote Sensor raises from 54.6 Hz to 73 Hz, The numerical results indicate that after adopting the topologic optimization design method, the capability of the main supporting structure is enhanced, Which shows that optimized support structures can meet the system design requirements, and above analysis has a certain instructional significance for the design of main supporting structures in offaxis three-mirror reflective Space Remote Sensors.
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