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Electrodeless plasma thruster
The electrodeless plasma thruster is a spacecraft propulsion engine. It was created by Mr. Gregory Emsellem based on technology developed by French Atomic Energy Commission scientist Dr Richard Geller and Dr. Terenzio Consoli, for high speed plasma beam production.
The electrodeless plasma thruster is currently being developed and adapted to various spacecraft propulsion needs by The Elwing Company.
Additional recommended knowledge
This thruster technology can deliver large thrust density as the acceleration process is not limited by plasma density through Hall Parameter or grid electrical screening. Further as the ponderomotive force accelerate all plasma species in the same direction, this thruster technology does not need any neutralizer. The fact that electrodeless plasma thruster is inherently multi-staged allow to optimize separately both stages or to throttle the thruster at constant power between higher specific impulse and higher thrust. Last the field of ponderomotive force is created by non-uniform high frequency field and static magnetic field thus it implies no grids or contact between the plasma and any electrodes hence avoiding most thruster erosion and spacecraft contamination issues.
Propulsion systems based on electrodeless plasma thrusters seems ideally suited for orbit raising for large geostationnary satellite, and would also be able to perform station keeping, hence enabling important propellant mass saving. The ability of this technology to provide large thrust density could allow faster missions to outer planets.
The use of ponderomotive force to accelerate a plasma has recently been investigated from a theoretical point of view by Princeton Plasma Physics Laboratory scientists I. Y. Dodin, Y. Raitses and N. J. Fisch.
Some theoretical researches have also been reported around the debated issue of the existence of a double layer in such thruster, even if such a double layer structure would be current-free, as both ions and electrons travels in the same directions at the same average terminal speed, and the existence of current free double layer is still debated among plasma physicists.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Electrodeless_plasma_thruster". A list of authors is available in Wikipedia.|