Fixed plasma motor

F - Mech Eng,Light,Heat,Weapons – 03 – H

Patent

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F03H 1/00 (2006.01) H05H 1/54 (2006.01)

Patent

CA 2139581

The plasma motor comprises a primary ionization and acceleration annular canal (24) delimited by parts (22) made of insulating material and open at its downstream end (225), at least one hollow cathode (40) associated with means (41) for supplying gas capable of being ionized, and an annular anode (25) concentric with said main annular canal (24) and placed at a distance from the open downstream end (225). An annular buffer chamber (24) which has, radially, a larger size than that of the main annular canal (24) extends upstream of the latter beyond the area in which is placed the annular anode (25). Means (26) for supplying gas capable of being ionized open upstream of the anode (25) through an annular distributor (27) into an area separated from the area carrying the anode (25). Means (31 to 33, 34 to 38) for creating a magnetic field in the main canal (24) are adapted to produce in said main canal (24) an essentially radial magnetic field having a gradient with maximum induction at the downstream end (225) of said canal (24).

2139581 9402738 Le moteur à plasma comprend un canal annulaire principal d'ionisation et d'accélération (24) délimité par des pièces (22) en matériau isolant et ouvert à son extrémité aval (225), au moins une cathode creuse (40) associée à des moyens (41) d'alimentation en gaz ionisable, et une anode annulaire (25) concentrique au canal annulaire principal (24) et disposée à distance de l'extrémité aval ouverte (225). Une chambre tampon annulaire (23) qui présente dans le sens radial une dimension plus grande que celle du canal annulaire principal (24) s'étend en amont de celui-ci au-delà de la zone dans laquelle est placée l'anode annulaire (25). Des moyens (26) d'alimentation en gaz ionisable débouchent en amont de l'anode (25) à travers un distributeur annulaire (27) dans une zone distincte de la zone portant l'anode (25). Des moyens (31 à 33, 34 à 38) de création d'un champ magnétique dans le canal principal (24) sont adaptés pour produire dans ce canal principal (24) un champ magnétique essentiellement radial qui présente un gradient avec une induction maximale à l'extrémité aval (225) du canal (24).

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