Abstract

Subject of study. The reactive residual moment on the base of the spacecraft, arising from the movement of the moving part of the opto-mechanical system (OMS), and the installation for its measurement are studied. Aim of study. The aim is to develop a method for measuring the reactive moment that occurs when moving the moving part of the OMS, create a stand for measuring the reactive moment based on this method, and assess the accuracy characteristics of the stand. Method. The measuring unit of the stand is mathematically modeled, and the reactive moment is measured according to the proposed method. Main results. After mathematical modeling of the measuring unit of the device for measuring the reactive residual torque according to the proposed method, a stand was developed for measuring the reactive residual moment that occurs when the moving part of the OMS moves, based on a fiber optical gyroscope as an angular velocity meter. The measurement error of the stand was estimated, which does not exceed 1%. Practical significance. The method proposed here for measuring the residual reactive moment will allow measuring with sufficient accuracy the residual reactive moment on the base of the spacecraft, which arose during the rotation of the moving part of the OMS. The obtained measurements make it possible to correct the torque compensation means on the spacecraft base or to calculate the errors in positioning the axis of sight, considering the displacement of the spacecraft.

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