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Elimination of Lifetime Limiting Mechanism of Hall ThrustersA Hall thruster includes inner and outer electromagnets, with the outer electromagnet circumferentially surrounding the inner electromagnet along a centerline axis and separated therefrom, inner and outer poles, in physical connection with their respective inner and outer electromagnets, with the inner pole having a mostly circular shape and the outer pole having a mostly annular shape, a discharge chamber separating the inner and outer poles, a combined anode electrode/gaseous propellant distributor, located at an upstream portion of the discharge chamber and supplying propellant gas and an actuator, in contact with a sleeve portion of the discharge chamber. The actuator is configured to extend the sleeve portion or portions of the discharge chamber along the centerline axis with respect to the inner and outer poles.
Document ID
20090029929
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Jacobson, David T. (NASA Glenn Research Center Cleveland, OH, United States)
Manzella, David H. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
March 10, 2009
Subject Category
Spacecraft Propulsion And Power
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-7500350|NASA-Case-LEW-17664-1
Patent Application
US-Patent-Appl-SN-11/044471

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