Evaluation system and evaluation method for deflation disturbance at initial satellite orbit injection stage

Abstract

The invention relates to an evaluation method for deflation disturbance at an initial satellite orbit injection stage, which comprises the following steps: (1) at the initial satellite orbit injectionstage, for a satellite suspected to have a satellite deflation disturbance phenomenon, obtaining the telemetry data variation of an execution mechanism during attitude disturbance through satellite telemetry; (2) calculating to obtain disturbance torque acting on three axes of a satellite body coordinate system in an attitude disturbance period; (3) establishing a satellite deflation mechanical model based on the satellite configuration layout design and possible mechanical parameters of deflation sites, and obtaining the relationship between the disturbance force and the disturbance torque of each axis of the satellite in the deflation disturbance process; (4) obtaining a criterion condition that the attitude disturbance phenomenon is satellite deflation disturbance according to the satellite flight time T, the disturbance force action duration delta T, the magnitude of the disturbance force F and the attitude disturbance phenomenon; and (5) judging the attitude disturbance phenomenon at the initial satellite orbit injection stage according to criterion conditions. The method and the model provided by the invention provide a basis for on-orbit disposal of deflation disturbance.

Description

technical field [0001] The invention relates to an evaluation system and an evaluation method for satellite outgassing disturbance. Background technique [0002] Due to the certain airtightness of the satellite star and some equipment, the satellite has attitude disturbance caused by the star deflation in the early stage of orbit. If it is not handled in time, the safety of the satellite will be endangered. Therefore, it is of great significance to judge and deal with the phenomenon of attitude disturbance caused by star outgassing in the initial stage of satellite orbit. [0003] During the launch of the satellite, the time from ignition and take-off to the separation of the satellite and the rocket is relatively short, the external pressure environment of the satellite changes rapidly, and the outer surface of the satellite adopts strict thermal control coating measures due to the need for thermal control, which has a certain degree of airtightness. It is difficult for th...

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Problems solved by technology

At present, there is no clear evaluation system and evaluation method that can be used for reference for the phenomenon and impact of outgassing disturbance in the initial stage of satellite orbiting; it is necessary to carry out research on the evaluation system and evaluation method of satellite outgassing disturbance. Changes to judge the phenomenon of deflation disturbance, and establish a satellite deflation model, realize the prediction and calculation of deflation disturbance force, and evaluate the magnitude and impact of disturbance, and carry out targeted on-orbit disposal based on this to avoid deflation Atmospheric disturbance affects satellite pointing function and satellite safety

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