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Proceedings Paper

Development of a SMA-based actuator for compact kinetic energy missile
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Paper Abstract

In this paper, a prototype SMA-based actuator for a compact kinetic energy missile was fabricated. Thin film nickel-titanium was selected as an actuating mechanism because it exhibited high power density compared to other smart materials. This study represents a proof of concept that high drive frequency and high power density can be both achieved with thin film SMA. The thin film reached a drive frequency of 80Hz while achieving a power density of 27900 Watts/kg. As for the pump, the power density was 2.93 Watts/kg, but obtaining higher value can certainly be achieved by reducing the chamber weight through optimization. In any case, CFD analysis revealed that the pump chamber had to be redesigned to change the flow profile because the present design created non-circulating dead zones immediately adjacent to the diaphragm. Therefore by redirecting the liquid flow to directly cool the SMA diaphragm improved the heat transfer and thus improved performance of the actuator can be achieved.

Paper Details

Date Published: 15 July 2002
PDF: 7 pages
Proc. SPIE 4701, Smart Structures and Materials 2002: Smart Structures and Integrated Systems, (15 July 2002); doi: 10.1117/12.474662
Show Author Affiliations
Daniel D. Shin, Univ. of California/Los Angeles (United States)
Donggun Lee, Univ. of California/Los Angeles (United States)
Kotekar Panduranga Mohanchandra, Univ. of California/Los Angeles (United States)
Gregory Paul Carman, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 4701:
Smart Structures and Materials 2002: Smart Structures and Integrated Systems
L. Porter Davis, Editor(s)

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