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Proceedings Paper

Design and demonstration of a small expandable morphing wing
Author(s): Yudi Heryawan; Hoon C. Park; Nam S. Goo; Kwang J. Yoon; Yung H. Byun
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Paper Abstract

In this paper, we present design, manufacturing, and wind tunnel test for a small-scale expandable morphing wing. The wing is separated into inner and outer wings as a typical bird wing. The part from leading edge of the wing chord is made of carbon composite strip and balsa. The remaining part is covered with curved thin carbon fiber composite mimicking wing feathers. The expandable wing is driven by a small DC motor, reduction gear, and fiber reinforced composite linkages. Rotation of the motor is switched to push-pull linear motion by a screw and the linear motion of the screw is transferred to linkages to create wing expansion and folding motions. The wing can change its aspect ratio from 4.7 to 8.5 in about 2 seconds and the speed can be controlled. Two LIPCAs (Lightweight Piezo-Composite Actuators) are attached under the inner wing section and activated on the expanded wing state to modify camber of the wing. In the wind tunnel test, change of lift, drag, and pitching moment during wing expansion have been investigated for various angles of attack. The LIPCA activation has created significant additional lift.

Paper Details

Date Published: 17 May 2005
PDF: 8 pages
Proc. SPIE 5764, Smart Structures and Materials 2005: Smart Structures and Integrated Systems, (17 May 2005); doi: 10.1117/12.599287
Show Author Affiliations
Yudi Heryawan, Konkuk Univ. (South Korea)
Hoon C. Park, Konkuk Univ. (South Korea)
Nam S. Goo, Konkuk Univ. (South Korea)
Kwang J. Yoon, Konkuk Univ. (South Korea)
Yung H. Byun, Konkuk Univ. (South Korea)

Published in SPIE Proceedings Vol. 5764:
Smart Structures and Materials 2005: Smart Structures and Integrated Systems
Alison B. Flatau, Editor(s)

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