Structural Design, Manufacturing, and Wind Tunnel Test of a Small Expandable Wing
This paper describes design, manufacturing, and wind tunnel test of a motor-driven small-scale expandable wing for MAV class vehicles. The bird-like expandable wing has been developed for investigating the influence of aspect ratio change on the lift and drag of the wing. As a typical bird wing, the wing is separated into inner and outer wings. The wing model consists of the linkage system made of carbon composite strip/rod and the remaining part covered with carbon composite sheet and multiple LIPCAs (Lightweight Piezo-Composite Actuators) mimicking wing feathers. The LIPCA actuator was used to control wing camber, which created additional lift. Wind tunnel tests were conducted to investigate the changes in lift and drag during wing folding and expansion, and to observe the influence of LIPCA actuation on the wing. In the tests, effects of the wing fold/expansion and actuation of LIPCA on changes in lift and drag were quantitatively identified.
Ichsan Setya Putra and Djoko Suharto
Y. Heryawan et al., "Structural Design, Manufacturing, and Wind Tunnel Test of a Small Expandable Wing", Key Engineering Materials, Vols. 306-308, pp. 1157-1162, 2006