Abstract
AbstractThis paper proposes an approach to modeling the temperature field of a strapdown inertial unit that is part of an inertial navigation system based on fiberoptic gyroscopes. Mathematical and finite element models for heat transfer analysis of the strapdown inertial unit has been developed. Results of numerical simulations including the effect of changes in external temperature on the temperature field in the device and temperature rates at specified points of the device are presented. It is found that the application of thermal stabilisation in the considered makes it possible to form a temperature field with a temperature difference of 2 K on the fibre optic gyroscopes platform, which provides a minimum level of thermal strains and reduces the fluctuations of external temperature to 0.2 K/min.
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