Electron closed drift thruster

摘要

#CMT# #/CMT# The thruster has a magnetic circuit for creating magnetic filed in a main annular ionization and acceleration channel. The circuit has external and internal radial polar pieces (134, 135) defining an internal concave peripheral surface (134a) and an external convex peripheral surface (135a), respectively. Each surface has an adjusted profile different from a circular cylindrical surface to form a variable width air gap. The width of the gap is maximum in zones (232) at the right of external coils and minimum in zones (231) between the coils to create a uniform radial magnetic field. #CMT#USE : #/CMT# Closed electron drift plasma thruster. #CMT#ADVANTAGE : #/CMT# The configuration of the thruster permits better cooling of the annular channel, minimizes the length of wire required for the windings, reduces weight of the windings, and creates uniform radial magnetic field within the channel, so that the thruster is adapted to high power. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a front view of adjusted polar pieces of a closed electron drift plasma thruster. 134 : External radial polar piece 134a : Internal concave peripheral surface 135 : Internal radial polar piece 135a : External convex peripheral surface 231, 232 : Zones.