Performance and Flatness of a Multiple-Cathode, Rectangular Ion Thruster Discharge Chamber
نویسندگان
چکیده
منابع مشابه
Performance and Flatness of a Multiple-Cathode, Rectangular Ion Thruster Discharge Chamber
Results from the extended life test of the Deep Space One flight spare ion engine show that enlargement of the discharge cathode assembly orifice due to erosion of the orifice by ion bombardment limits the throughput of the ion thruster, and therefore limits its operational lifetime to approximately three years. Future deep-space missions will require significantly longer operational lifetime, ...
متن کاملDormant Cathode Plasma Properties and Erosion Analysis in a Multiple-Cathode, High-Power, Rectangular Discharge Chamber
A high-power, rectangular discharge chamber is being investigated by the University of Michigan for operation with multiple discharge cathode assemblies (DCAs). The multiple cathode approach attempts to increase thruster lifetime by operating three DCAs sequentially, possibly providing a threefold increase in discharge life. Previous multiplecathode electric propulsion devices, such as the SPT-...
متن کاملDormant Cathode Erosion in a Multiple-Cathode Gridded Ion Thruster
A rectangular gridded ion thruster discharge chamber is investigated for operation with multiple discharge cathode assemblies. The multiple-cathode approach attempts to increase thruster throughput and lifetime by operating three discharge cathode assemblies sequentially, possibly providing a threefold increase in discharge chamber life. Previous multiple-cathode electric propulsion devices, su...
متن کاملDesign and Operation of a Multiple-Cathode, High-Power, Rectangular Discharge Chamber
A high-power, rectangular discharge chamber is being designed by the University of Michigan for operation with multiple discharge cathode assemblies (DCAs). The multiple cathode approach attempts to increase thruster lifetime by operating three DCAs sequentially, possibly providing a threefold increase in discharge life. The baseline multiplecathode discharge chamber (MCDC) magnetic field topol...
متن کاملMeasurement of 30-Centimeter Ion Thruster Discharge Cathode Erosion
Relative erosion rates of the discharge cathode assembly of a 30-cm ion engine are measured using laser-induced fluorescence. Molybdenum and tungsten erosion products are interrogated downstream of the discharge cathode assembly during beam extraction. Erosion of the discharge cathode assembly is characterized for both keepered and unkeepered configurations. The erosion increases with both disc...
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ژورنال
عنوان ژورنال: Journal of Propulsion and Power
سال: 2007
ISSN: 0748-4658,1533-3876
DOI: 10.2514/1.21325