Table of Contents
Smart Materials Research
Volume 2012, Article ID 181645, 10 pages
http://dx.doi.org/10.1155/2012/181645
Research Article

Supersonic Flutter Utilization for Effective Energy-Harvesting Based on Piezoelectric Switching Control

1Department of Aerospace Engineering, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ward, Sendai 980-8579, Japan
2Japan Aerospace Exploration Agency (JAXA), Institute of Space and Astronautical Science (ISAS), 3-1-1 Yoshinodai, Chuo-ward, Sagamihara, Kanagawa 252-5210, Japan

Received 4 January 2012; Revised 9 March 2012; Accepted 10 March 2012

Academic Editor: Osama J. Aldraihem

Copyright © 2012 Kanjuro Makihara and Shigeru Shimose. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The harvesting of electrical energy generated from the flutter phenomenon of a plate wing is studied using the quasi-steady aerodynamic theory and the finite element method. The example of supersonic flutter structure comes from sounding rockets’ wings. Electrical energy is harvested from supersonic flutter by using piezoelectric patches and switching devices. In order to evaluate the harvesting performance, we simulate flutter dynamics of the plate wing to which piezoelectric patches are attached. We demonstrate that our harvesting system can generate much more electrical energy from wing flutter than conventional harvesting systems can. This flutter utilization changes our perception to a useful one in various fruitful applications from a destructive phenomenon.