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Endurance testing of downstream cathodes on a low-power MPD thruster (1974)

Rose, J. R. ; Burkhart, J. A.

In: CASI

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Publication Date: 2019-06-27

Description: A low-power MPD thruster with downstream cathode was tested for endurance with a series of hollow cathode designs. Failure modes and failure mechanisms were identified. A new hollow cathode (with rod inserts) has emerged which shows promise for long life. The downstream positioning of the cathode was also changed from an on-axis location to an off-axis location. Data are presented for a 1332-hour life test of this new hollow cathode located at the new off-axis location. Xenon propellant was used.

Keywords: PROPULSION SYSTEMS

Type: NASA-TN-D-7616 , E-7647

Format: application/pdf

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