NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Advanced-technology 30-cm-diameter mercury ion thrusterAn advanced-technology mercury ion thruster designed for operation at high thrust and high thrust-to-power ratio is described. The laboratory-model thruster employs a highly efficient discharge-chamber design that uses high-field-strength samarium-cobalt magnets arranged in a ring-cusp configuration. Ion extraction is achieved using an advanced three-grid ion-optics assembly which utilizes flexible mounts for supporting the screen, accel, and decel electrodes. Performance results are presented for operation at beam currents in the range from 1 to 5 A. The baseline specific discharge power is shown to be about 125 eV/ion, and the acceptable range of net-to-total accelerating-voltage ratio is shown to be in the range of 0.2-0.8 for beam currents in the range of 1-5 A.
Document ID
19830031266
Document Type
Conference Paper
Authors
Beattie, J. R. (Hughes Research Labs. Malibu, CA, United States)
Kami, S. (Hughes Research Laboratories Malibu, CA, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Subject Category
SPACECRAFT PROPULSION AND POWER
Report/Patent Number
AIAA PAPER 82-1910
Meeting Information
Japan Society for Aeronautical and Space Sciences, and DGLR, International Electric Propulsion Conference(New Orleans, LA)
Funding Number(s)
CONTRACT_GRANT: NAS3-21943
Distribution Limits
Public
Copyright
Other