A method for obtaining plume parameters of electric propulsion spacecraft

Abstract

The invention provides an electric propulsion spacecraft plume parameter acquisition method. In a condition of simulating a spacecraft orbit environment, plasma potential, plasma density, electron temperature, plasma ion energy spectrum, electric propulsion plume pollutant deposition and the like, and distribution of space parameters around a thruster are tested; due to use of an oil-free vacuum system, a thin gas atmosphere and a clean environment condition are provided for the method, accuracy of measured data during the test process is greatly enhanced, and an electric thruster test operation risk is reduced; and pollution data in electric thruster multi-parameter diagnosis equipment are measured and acquired, electric propulsion spacecraft plasma plume parameter distribution and a spacecraft in-orbit performance degradation condition in a simulated space environment condition can be estimated, and guidance and basis are provided for research on the electric propulsion spacecraft and service life estimation. The method of the invention is applied to electric propulsion spacecraft engine plume feature test and can be applied to scale test.

Description

technical field [0001] The invention belongs to the technical field of aerospace and is applied to the ground test and on-orbit monitoring of plume parameters of electric propulsion spacecraft, in particular to a method for obtaining plume parameters of electric propulsion spacecraft. Background technique [0002] With the continuous development of aerospace technology, various thrusters, such as Arcjet, Magnetoplasma Thruster (MPD), Steady State Plasma Thruster (SPT), Ion Thruster (IE), etc. More and more applications are on earth satellites and deep space probes. The plume ejected by the electric thruster is a high-temperature, high-energy plasma flow. However, due to its special plasma plume characteristics, electric propulsion technology causes changes in the plasma environment around the satellite, which induces a series of negative effects such as electrification on the satellite surface, deposition pollution, disturbance torque, and electromagnetic interference. At ...

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Problems solved by technology

At present, my country is still unable to monitor the plasma plume parameters of electric propulsion engines in situ

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