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Computer controlled operation of a two-engine xenon ion propulsion systemThe development and testing of a computer control system for a two-engine xenon ion propulsion module is described. The computer system controls all aspects of the propulsion module operation including: start-up, steady-state operation, throttling and shutdown of the engines; start-up, operation and shutdown of the central neutralizer subsystem; control of the gimbal system for each engine; and operation of the valves in the propellant storage and distribution system. The most important engine control algorithms are described in detail. These control algorithms provide flexibility in the operation and throttling of ion engines which has never before been possible. This flexibility is made possible in large part through the use of flow controllers which maintain the total flow rate of propellant into the engine at the proper level. Data demonstrating the throttle capabilities of the engine and control system are presented.
Document ID
19870053836
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brophy, John R.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
May 1, 1987
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 87-1007
Accession Number
87A41110
Distribution Limits
Public
Copyright
Other

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