Smart vortex generator transformed by change in ambient temperature and aerodynamic force

Tadashige Ikeda; Shinya Masuda; Tetsuhiko Ueda

doi:10.1117/12.715097

27 April 2007 Smart vortex generator transformed by change in ambient temperature and aerodynamic force

Tadashige Ikeda, Shinya Masuda, Tetsuhiko Ueda

Proceedings Volume 6525, Active and Passive Smart Structures and Integrated Systems 2007; 65251L (2007) https://doi.org/10.1117/12.715097
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

A Smart Vortex Generator (SVG) concept has been proposed, where the SVG is autonomously transformed between an upright vortex-generating position in take-off and landing and a flat drag-reducing position in a cruise. This SVG is made of a Shape Memory Alloy (SMA), which is in the austenite phase and memorizes the upright position at high temperatures of the take-off and landing. At low temperatures during ascent the SVG is transformed into a martensite phase, and it lies flat against a base structure due to external or/and internal forces. In this paper, we examine whether the SVG can be transformed into the drag-reducing position by an aerodynamic force. To this end, numerical simulations are carried out with a simple line element model. The aerodynamic force applied on the SVG is calculated by a commercial CFD program. Result reveals that this SVG can be transformed from the upright vortex-generating position into the drag-reducing position by just an airplane climbing, and vice versa, if the SMA applied to the SVG has the two-way shape memory effect. If the SMA has the one-way shape memory effect, it is necessary to reduce the stiffness of the SVG or/and use a counter spring.

Citation Download Citation

Tadashige Ikeda, Shinya Masuda, and Tetsuhiko Ueda "Smart vortex generator transformed by change in ambient temperature and aerodynamic force", Proc. SPIE 6525, Active and Passive Smart Structures and Integrated Systems 2007, 65251L (27 April 2007); https://doi.org/10.1117/12.715097

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