A Ground Calibration Method for On-orbit Performance of Dual-Component Attitude Control Thruster

Abstract

The invention relates to a ground calibration method for on-orbit performance of a two-component attitude control thruster, in particular to a ground calibration method for a two-component attitude control thruster with high performance and long service life for a spacecraft, and belongs to the technical field of spacecraft propulsion. The method comprises the following steps: a first control valve is installed at the head part of the two-component attitude control thruster to form a thermal calibration thruster; the thermal calibration thruster is installed in a closed container to perform a thermal calibration test; the thermal calibration thruster after the thermal calibration test is cleaned for the first time; the cleaned thermal calibration thruster is taken out from the closed container; the first control valve is dismantled; the head part of the two-component attitude control thruster is cleaned for the second time; a second control valve is installed at the head part of the secondly cleaned two-component attitude control thruster, so as to finish ground thermal calibration for the on-orbit performance of the two-component attitude control thruster.

Description

technical field [0001] The invention relates to a method for ground calibration of the on-orbit performance of a dual-component attitude control thruster, in particular to a ground calibration method for a high-performance and long-life dual-component thruster for spacecraft, which belongs to the technical field of spacecraft propulsion. Background technique [0002] Dual-element attitude control thrusters are usually used in large-scale long-life spacecraft to perform attitude and orbit control tasks during the entire life of the spacecraft, and its on-orbit performance directly affects the performance and life of the spacecraft. It is of great significance to carry out ground calibration in advance to control the thruster's on-orbit performance. [0003] The obstacles to ground thermal calibration of the dual-component attitude control thruster on-orbit performance mainly come from two aspects. On the one hand, the calibration accuracy of the dual-component attitude contro...

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Problems solved by technology

[0003] The obstacles to ground thermal calibration of the dual-component attitude control thruster on-orbit performance mainly come from two aspects. On the one hand, the calibration accuracy of the dual-component attitude control thruster’s on-orbit performance is high, and the vacuum degree of the test system is very high. ; On the other hand, due to the small flow rate of the attitude control thruster and the complexity of the internal passages, it is difficult to meet the requirements of the conventional cleaning method after calibration of the larger thrust liquid rocket engine. cause some damages