Caltech Micromachining Laboratory
Titanium-alloy MEMS Wing Technology for a Micro Aerial Vehicle Application
Project Abstract
In this paper, we present the first MEMS-based wing technology that we developed using titanium-alloy
metal (Ti-6Al-4V) as wingframe and poly-monochloro-para-xylylene (parylene-C) as wing membrane. With this
new MEMS wing technology, we are able to produce light but robust 3-D wings, optimized to utilize the
flow separation to achieve a high lift coefficient as large as 5 times that of the fixed-wing aircraft. The
use of MEMS technology enables systematic research in terms of repeatability, size control, and weight
minimization of the wings. We also constructed a high quality low-speed wind tunnel with velocity uniformity of
0.5% and speeds from 1 m/s to 10 m/s. We have tested and have studied the unsteady-state aerodynamics of various
types of MEMS-based and non MEMS-based wings. Finally, we built lightweight, palm-sized flapping-wing micro
aerial vehicles (MAVs) with super capacitor-powered and battery-powered transmission systems and have demonstrated
successful free flights with flight duration ranges from 5 to 18 seconds.
Personnel Involved
T. Nick Pornsin-sirirak, Y. C. Tai, H. Nassef b, C. M. Ho
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