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Proceedings Paper

Implementation of vortex wake control using SMA-actuated devices
Author(s): Todd R. Quackenbush; Alan J. Bilanin; P. F. Batcho; Robert M. McKillip; Bernie F. Carpenter
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Paper Abstract

Mitigation of the undesirable effects of trailing vortex wakes has been a long-standing priority for both reduction of submarine wake signature and alleviation of aircraft vortex wake hazard. A recent study established the feasibility of using relatively weak, secondary vortices with carefully selected unsteady amplitude and phasing to accelerate the breakup of the primary vortex system of a lifting surface, a technique denoted `vortex leveraging'. This paper will summarize progress on the development of SMA-actuated devices for implementing vortex leveraging for hydrodynamic applications. The methods being applied to the hydrodynamic design of these deformable Smart Vortex Leveraging Tabs (SVLTs) will be described, and the results of a preliminary assessment of SVLT performance in achieving wake breakup will be presented. Also, previous work on the design and testing of deformable control surfaces actuated via embedded SMA agonist wires will be reviewed and the design process being employed in the present applications will be discussed. Finally, the plans for near-term computational and experimental work to validate the use of SMA-driven devices for the wake mitigation task will be briefly outlined.

Paper Details

Date Published: 23 May 1997
PDF: 13 pages
Proc. SPIE 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies, (23 May 1997); doi: 10.1117/12.274657
Show Author Affiliations
Todd R. Quackenbush, Continuum Dynamics, Inc. (United States)
Alan J. Bilanin, Continuum Dynamics, Inc. (United States)
P. F. Batcho, Continuum Dynamics, Inc. (United States)
Robert M. McKillip, Continuum Dynamics, Inc. (United States)
Bernie F. Carpenter, Lockheed Martin Astronautics (United States)


Published in SPIE Proceedings Vol. 3044:
Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies
Janet M. Sater, Editor(s)

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