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Development of magnetostrictive active members for control of space structuresThe goal of this Phase 2 Small Business Innovative Research (SBIR) project was to determine the technical feasibility of developing magnetostrictive active members for use as truss elements in space structures. Active members control elastic vibrations of truss-based space structures and integrate the functions of truss structure element, actively controlled actuator, and sensor. The active members must control structural motion to the sub-micron level and, for many proposed space applications, work at cryogenic temperatures. Under this program both room temperature and cryogenic temperature magnetostrictive active members were designed, fabricated, and tested. The results of these performance tests indicated that room temperature magnetostrictive actuators feature higher strain, stiffness, and force capability with lower amplifier requirements than similarly sized piezoelectric or electrostrictive active members, at the cost of higher mass. Two different cryogenic temperature magnetostrictive materials were tested at liquid nitrogen temperatures, both with larger strain capability than the room temperature magnetostrictive materials. The cryogenic active member development included the design and fabrication of a cryostat that allows operation of the cryogenic active member in a space structure testbed.
Document ID
19930009133
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Johnson, Bruce G. (SatCon Technology Corp. Cambridge, MA, United States)
Avakian, Kevin M. (SatCon Technology Corp. Cambridge, MA, United States)
Fenn, Ralph C. (SatCon Technology Corp. Cambridge, MA, United States)
Gaffney, Monique S. (SatCon Technology Corp. Cambridge, MA, United States)
Gerver, Michael J. (SatCon Technology Corp. Cambridge, MA, United States)
Hawkey, Timothy J. (SatCon Technology Corp. Cambridge, MA, United States)
Boudreau, Donald J. (SatCon Technology Corp. Cambridge, MA, United States)
Date Acquired
September 6, 2013
Publication Date
August 10, 1992
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NASA-CR-190846
NAS 1.26:190846
R29-92
Accession Number
93N18322
Funding Number(s)
CONTRACT_GRANT: NAS7-1151
CONTRACT_GRANT: SBIR-04.14-0540
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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