Abstract: As one of the important measuring instruments in satellite attitude control system, the requirements for accuracy and reliability of floated gyro are increasing. In order to analyze the influences of thermal design and internal temperature field distribution of floated gyro on its accuracy and reliability, the internal temperature field is simulated and analyzed via Ansys Fluent software. By compared with the thermal vacuum test data, the accuracy of the finite element model and boundary conditions of floated gyro are verified. According to the simulation results, some optimization measures are proposed to improve the thermal design of floated gyro.

Key words: floated gyro, thermal simulation