Multi-physics Coupling and Thermal Network Analysis of MSCMG

Temperature rise caused by losses is an important problem to be solved urgently in spacecraft applications. In order to analyze the effect of temperature rise, a magnetically suspended control moment gyroscope (MSCMG) with rated speed of 15000 r/min and maximum angular momentum of 200 N•m•s is analyzed and calculated by using the three-dimensional finite element model (FEM). Then, the thermal-structure coupling simulation and thermal network analysis are carried out. The positions of maximum temperature rise and maximum stress are obtained. Moreover, the internal heat transfer mode and path are studied. It can provide a powerful reference for structural optimization and thermal design of the MSCMG.