Abstract
Flapping-wing miniature air vehicles (MAVs) offer multiple performance benefits relative to fixed-wing and rotary-wing MAVs. This investigation focused on the problem of designing compliant wings for a flapping-wing MAV where only the spar configuration was varied to achieve improved performance. Because the computational tools needed for identifying the optimal spar configuration for highly compliant wing designs have yet to be developed, a new experimental methodology was developed to explore the effects of spar configuration on the wing performance. This technique optically characterized the wing deformations associated with a given spar configuration and used a customized test stand for measuring lift and thrust loads on the wings during flapping. This revealed that spar configurations achieving large and stable deformed volume during the flapping cycle provided the best combination of lift and thrust. The approach also included a sensitivity and reproducibility analysis on potential spar configurations. Results indicated that the wing shape and corresponding lift and thrust performance were very sensitive to slight changes in volume and 3-D shape associated with slight variations in the spar locations.
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This work was supported by Dr. Byung-Lip “Les” Lee at AFOSR through grant FA95501210158.
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Gerdes, J.W., Cellon, K.C., Bruck, H.A. et al. Characterization of the Mechanics of Compliant Wing Designs for Flapping-Wing Miniature Air Vehicles. Exp Mech 53, 1561–1571 (2013). https://doi.org/10.1007/s11340-013-9779-5
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DOI: https://doi.org/10.1007/s11340-013-9779-5