Abstract
Based on the mathematical model presented in the first part of this paper, specialized software was created and computer modeling of nonstationary inhomogeneous temperature fields in a fiber-optic gyroscope was performed. The simulation aimed to analyze the temperature distribution in the gyroscope structural elements, especially in the fiber-optic coil and the electronics unit, since temperature fluctuations in them are one of the main sources of device errors. To achieve this goal, a three-dimensional unsteady field was calculated in a fiber-optic gyroscope. Based on the results of computer modeling, comparative data on the temperature distribution in the gyroscope structural elements on earth and orbital flight conditions, and the degree of influence of space and zero-gravity conditions are obtained.
Highlights
In the first part of the work the main research tasks were formulated, a thermal and mathematical model of a fiber-optic gyroscope (FOG) was constructed
The structural elements of FOG were divided into thermal elementary volumes
All formulas and relations [1,2,3] that form the basis of the mathematical model for calculating the non-stationary inhomogeneous temperature field of a FOG are implemented in specialized software in C++
Summary
In the first part of the work the main research tasks were formulated, a thermal and mathematical model of a fiber-optic gyroscope (FOG) was constructed. Two thermal modes (on earth and in outer space) are defined, according to which the parameters of the external environment and the low of temperature disturbances are set. All formulas and relations [1,2,3] that form the basis of the mathematical model for calculating the non-stationary inhomogeneous temperature field of a FOG are implemented in specialized software in C++. The software has the functions for calculating, processing model parameters, and initial data, functions for dynamic visualization of thermal processes, which occur in FOG. The study was carried out in several stages, which simulated the earth's operating conditions, space flight conditions, constant and variable temperature effects to the FOG
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