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NSTAR Ion Thruster and Breadboard Power Processor Functional Integration Test ResultsA 2.3 kW Breadboard Power Processing Unit (BBPPU) was developed as part of the NASA Solar Electric Propulsion Technology Application Readiness (NSTAR) Program. The NSTAR program will deliver an electric propulsion system based on a 30 cm xenon ion thruster to the New Millennium (NM) program for use as the primary propulsion system for the initial NM flight. The final development test for the BBPPU, the Functional Integration Test, was carried out to demonstrate all aspects of BBPPU operation with an Engineering Model Thruster. Test objectives included: (1) demonstration and validation of automated thruster start procedures, (2) demonstration of stable closed loop control of the thruster beam current, (3) successful response and recovery to thruster faults, and (4) successful safing of the system during simulated spacecraft faults. These objectives were met over the specified 80-120 VDC input voltage range and 0.5-2.3 output power capability of the BBPPU. Two minor anomalies were noted in discharge and neutralizer keeper current. These anomalies did not affect the stability of the system and were successfully corrected.
Document ID
Document Type
Conference Paper
Hamley, John A.
(NASA Lewis Research Center Cleveland, OH United States)
Pinero, Luis R.
(NASA Lewis Research Center Cleveland, OH United States)
Rawlin, Vincent K.
(NASA Lewis Research Center Cleveland, OH United States)
Miller, John R.
(NASA Lewis Research Center Cleveland, OH United States)
Myers, Roger M.
(NYMA, Inc. Brook Park, OH United States)
Bowers, Glen E.
(Gilcrest Electric Elyria, OH United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1996
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
NAS 1.15:107305
AIAA Paper 96-2720
Meeting Information
Joint Propulsion Conference(Lake Buena Vista, FL)
Funding Number(s)
PROJECT: RTOP 242-70-01
Distribution Limits
Work of the US Gov. Public Use Permitted.

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