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Performance documentation of the engineering model 30-cm diameter thrusterThe results of extensive testing of two 30-cm ion thrusters which are virtually identical to the 900 series Engineering Model Thruster in an ongoing 15,000-hour life test are presented. Performance data for the nominal fullpower (2650 W) operating point; performance sensitivities to discharge voltage, discharge losses, accelerator voltage, and magnetic baffle current; and several power throttling techniques (maximum Isp, maximum thrust/power ratio, and two cases in between are included). Criteria for throttling are specified in terms of the screen power supply envelope, thruster operating limits, and control stability. In addition, reduced requirements for successful high voltage recycles are presented.
Document ID
19770004160
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bechtel, R. T. (NASA Lewis Research Center Cleveland, OH, United States)
Rawlin, V. K. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1976
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
E-8952
NASA-TM-X-73530
Report Number: E-8952
Report Number: NASA-TM-X-73530
Meeting Information
Meeting: Intern. Elec. Propulsion Conf.
Location: Key Biscayne, FL
Country: United States
Start Date: November 15, 1976
End Date: November 17, 1976
Sponsors: AIAA
Accession Number
77N11103
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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