Spiral wave plasma propelling unit without neutralizer

Abstract

The invention discloses a spiral wave plasma propelling unit without a neutralizer. The spiral wave plasma propelling unit comprises a working medium supply unit and a spiral wave plasma source, the spiral wave plasma source comprises a discharging room, electromagnetic coils, a ceramic sleeve and a spiral wave excitation antenna. The spiral wave excitation antenna is connected with a radio frequency power source and sleeves the outer side of the front of the discharging room, the spiral wave excitation antenna and the discharging room where the spiral wave excitation antenna is located are located inside the ceramic sleeve, and the electromagnetic coils sleeve the exterior of the ceramic sleeve; a gas inlet communicated with the working medium supply unit is formed in the front end of thedischarging room, an accelerating grid electrode and a decelerating grid electrode are sequentially arranged at the rear end of the discharging room, and the accelerating grid electrode is connectedwith a radio frequency power source through a capacitor. The spiral wave plasma propelling unit has the advantages that generating and accelerating of plasmas are free of electrode erosion, meanwhile,the advantage of a high ionization degree of the plasmas is considered, and compared with a traditional magnetic spray nozzle propelling unit, specific impulse is higher, thrust is larger, and performance is better.

Description

technical field [0001] The invention relates to a helicon wave plasma propulsion device without a neutralizer, belonging to the technical field of spacecraft propulsion. Background technique [0002] The attitude adjustment of traditional satellite platforms and other types of spacecraft is mainly through chemical propulsion. There are many problems in the application of chemical propulsion. At present, electric propulsion is mainly developed in this field. Compared with chemical propulsion, the main advantage of electric propulsion is high specific impulse. High thrust accuracy, etc.; plasma thrusters are commonly used in electric propulsion. Most of the current plasma thrusters use the method of accelerating positive ions to generate thrust. Otherwise, it will lead to self-charging of the spacecraft, causing damage to its communication and electronic devices, and the performance of the neutralizer of this type of plasma thruster becomes an important factor restricting the ...

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Problems solved by technology

[0002] The attitude adjustment of traditional satellite platforms and other types of spacecraft is mainly through chemical propulsion. There are many problems in the application of chemical propulsion. At present, electric propulsion is mainly developed in this field. Compared with chemical propulsion, the main advantage of electric propulsion is high specific impulse. High thrust accuracy, etc.; plasma thrusters are commonly used in electric propulsion. Most of the current plasma thrusters use the method of accelerating positive ions to generate thrust. Otherwise, it will lead to self-charging of the spacecraft, causing damage to its communication and electronic devices, and the performance of the neutralizer of this type of plasma thruster becomes an important factor restricting the working state and life of the electric thruster. Therefore, a A plasma propulsion device without a neutralizer

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