Service life ground test method for ion thruster

Abstract

The invention discloses a service life ground test method for an ion thruster. By using the ground test method, a ground service life test for the iron thruster can be performed for a long time. According to the ground test method, service life ground test equipment is built first of all, the performance of the ion thruster after working for a long time is tested on the basis of the simulation space condition of the test equipment, and accordingly actual results of the service life of the ion thruster can be obtained, and real and reliable test data are provided for evaluation of the service life and the reliability of the thruster. Main performance parameters of the ion thruster in the whole service life can be obtained through substantive tests in the test process, and the change rule of the performance parameters of the thruster along with accumulative working time is further obtained; the basis for long-service-life working and application of the ion thruster is provided, and essential data can be obtained for more effective acceleration tests of the iron thruster in future. The test method is effective and reliable, and the economic cost and the time cost of the service life test are greatly lowered.

Description

technical field [0001] The invention relates to the technical field of ion thrusters, in particular to a ground test method for the service life of ion thrusters. Background technique [0002] Ion thrusters are currently one of the most advanced space propulsion systems, and have been widely used in spacecraft missions in developed countries with foreign aerospace technology. It is characterized by small thrust, high specific impulse, and long life. In October 2012, my country’s Shijian No. 9 satellite was launched into space. It has the correctness of various electric propulsion technology solutions, on-orbit performance, and compatibility with spacecraft. And the successful verification of long-term on-orbit working ability means that my country's all-electric propulsion system has initially possessed on-orbit application capabilities. However, for its mature application on spacecraft, it generally needs to verify its life test on the ground to assess its reliability. The...

AI Technical Summary

Problems solved by technology

At present, this kind of test equipment at home and abroad, the large flow gas load is only pumped by traditional conventional vacuum pumps, the pumping efficiency is low, the test equipment and the ion thruster test control system are relatively independent, the integration is low, and the test operation is complicated. The performance and state of the device, such as the divergence angle, the surface condition of the grid (especially in the test of 2 or more ion thrusters), etc. The test methods are simple, and the sputtering deposits of the equipment are large, etc.

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