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Electromagnetic interference assessment of an ion drive electric propulsion systemThe electromagnetic interference (EMI) form elements of an ion drive electric propulsion system was analyzed, and the effects of EMI interaction with a typical interplanetary spacecraft engineering and scientific subsystems were predicted. SEMCAP, a computerized electromagnetic compatibility assessment code, was used to analyze the impact of EMI noise sources on 65 engineering/telemetry circuits and 48 plasma wave and planetary radio astronomy channels measuring over the range of 100 Hz to 40 MHz in a spacecraft of the Voyager type; manual methods were used to evaluate electrostatics, magnetics, and communications effects. Results indicate that some conducted and radiated spectra are in excess of electromagnetic compatibility specification limits; direct design changes may be required for filtering and shielding of thrust system elements. The worst source of broadband radiated noise appears to be the power processor. The magnetic field necessary to thruster operation is equivalent to about 18 amp-sq m per amp of beam current at right angles to the axis caused by the neutralizer/plume loop.
Document ID
19790055027
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Whittlesey, A. C.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1979
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 79-1328
Meeting Information
Meeting: AIAA, SAE, and ASME, Joint Propulsion Conference
Location: Las Vegas, NV
Start Date: June 18, 1979
End Date: June 20, 1979
Sponsors: AIAA, ASME, SAE
Accession Number
79A39040
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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