Vector magnetic nozzle used for electric propulsion

Abstract

The invention discloses a vector magnetic nozzle used for electric propulsion. The vector magnetic nozzle is composed of a permanent magnet arranged in front of a plasma flame-spraying nozzle and a plurality of non-concentric coils which are arranged at the back of the nozzle and form a dipole field. The permanent magnet and the non-concentric coils form a double-magnetic mirror tube so that plasmas can be in reciprocating motion in the double-magnetic mirror tube. The plasmas are heated in effect of ion cyclotron wave resonance under current modulation of the non-concentric coils. Proportion of current on the plurality of non-concentric coils when the plasmas are released from the magnetic nozzle is adjusted so that the vector direction of an external magnetic field of the plasma flame-spraying nozzle of a propeller deviates from the central axis of the propeller so as to guide the flow direction of external plasmas and further to change the thrust vector direction of the propeller. The vector magnetic nozzle can greatly reduce the quantity of the propellers of an attitude control system through vector propulsion, simultaneously greatly improves reliability of the attitude control system, enables vertical speed of the plasmas to be converted to parallel speed, improves parallel flow rate of external flow plasmas, and achieves the purpose of increasing thrust.

Description

technical field [0001] The invention belongs to the technical field of aerospace propulsion and space application. In particular, the present invention relates to vectored magnetic nozzle structures for electric propulsion. Background technique [0002] The propulsion technologies of spacecraft in orbit mainly include chemical propulsion and electric propulsion. At present, my country has made great progress in the development of electric propulsion engines. Some satellites have planned to use electric propulsion engines. The high specific impulse saves a lot of propellant for the long-term operation of the satellite. However, it is difficult to improve the acceleration process after electric propulsion ionizes the working medium, and because the direction of the tail flame ejected from the nozzle of the engine is closely related to the shape of the nozzle, therefore, for a certain engine nozzle, the direction of its thrust is fixed with the nozzle. Yes, if you need to gene...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems, the present invention proposes a vector magnetic nozzle based on the confinement, release and direction control of plasma tail flame ions based on current modulation based on the plasma tail flame generated by the chemical-electromagnetic hybrid propulsion technology, which can improve the efficiency of the propulsion process. The energy of the ions in the plasma, and the control of its ejection direction, constitutes a solution to the problem of small thrust and uncontrollable direction in the past electric propulsion

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