HALL-EFFECT THRUSTER USABLE AT HIGH ALTITUDE

摘要

The invention relates to a Hall-effect thruster (10), configured to be arranged inside or outside a spacecraft. The thruster has a concentrator (36) for collecting particles (P). The shape of this concentrator is defined by a continuous contour (C1) that wraps around the thrust axis and is such that along a major portion of the contour, each cross-section of the concentrator perpendicular to the contour is parabola-shaped and has a focus (F1) belonging to the contour (C1). The magnetic circuit (50) is further arranged to generate the magnetic field (B) adjacent to the contour (C1).