Transverse centroid high-precision guarantee method for parallel tiled tank satellite in AIT stages

Abstract

The invention provides a transverse centroid high-precision guarantee method for a parallel tiled tank satellite in AIT stages. The transverse centroid high-precision guarantee method comprises the following steps: in the structural assembly stage, tank mounting plate form and position errors as well as apogee engine bracket mounting errors are controlled; in the propulsion system welding assembly stage, tank mounting position errors as well as apogee engine mounting position and pointing errors are controlled; in the whole satellite general assembly stage, the quality and the centroid are controlled when a solar array in the unfolded state; and before delivery, the whole satellite transverse centroid measurement is performed through high-precision centroid measurement equipment. According to the transverse centroid high-precision guarantee method provided by the invention, a plurality of transverse centroid guarantee measures are implemented in all the AIT stages of the whole satellite, the transverse centroid of the satellite is controlled to be near the origin when the solar array is in the initial unfolded state, the transverse centroid determination accuracy of the satellite is improved (lower than or equal to 1 mm), and the transverse centroid change of a satellite orbit maneuver section is reduced, thereby reducing the disturbance torque generated by an apogee engine and ensuring safe orbit maneuver; and meanwhile, the consumption of a propellant is lowered.

Description

technical field [0001] The present invention relates to the general technical field of satellites, in particular to a method for ensuring high-precision horizontal center of mass in the AIT (Assembly Integration and Test) stage of a satellite with parallel tiled storage tanks. Background technique [0002] The errors of the shape and position of the storage tank, the error of the center of mass in the unfolded state of the solar panel, the position and pointing error of the apogee engine, and the error of the center of mass test have a great influence on the determination accuracy of the lateral centroid of the satellite when the sail is deployed. The influence of the shape and position error of the tank is caused by It is caused by the particularity of parallel tiling layout of storage tanks. During the ignition process of the apogee engine during the orbit change phase of the satellite, when the center of mass of the entire satellite is not on the thrust axis of the apogee...

AI Technical Summary

Problems solved by technology

[0003] At present, general high-orbit satellites control the position and pointing error of the apogee engine, and the test error of the satellite's center of mass is 2-3mm, but there is no report or technology that can ensure the accuracy of the satellite's lateral center of mass determination with a systematic method throughout the AIT stage of the entire satellite.

Images