The Energetic Transient Array (ETA) is a mission, proposed by the Center for Space Research (CSR) at MIT, to set up an interplanetary constellation of six microsatellites for Gamma Ray Burst (GRB) astrometry. The micro-satellites will be deployed into distinct heliocentric orbits by a carrier spacecraft which will be propelled by a stationary plasma (SPT-79) electric thruster. This paper presents a discussion of the issues related to the application of electric propulsion technology in a primary propulsion mode. An overview of the mission is given. The results of a trade study, performed to assess various propulsion options, show that the SPT-70 is best suited to meet ETA system requirements. A constellation deployment scenario has been developed around the operation of two SPT-70 thrusters in serial mode. Details of SPT-70 system hardware are presented together with system block diagram and configuration. ETA is a unique opportunity to demonstrate the operation of electric propulsion technology in an interplanetary setting and in the mode of primary propulsion.
Electric Propulsion for an Interplanetary Astrophysics Mission
1995
10 pages
Report
Keine Angabe
Englisch
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