Morphing wing technologies provide expanded functionality in piloted and robotic aircra, extending particular vehicle mission parameters as well as increasing the role of aviation in both military and civilian applications. However, realizing control surfaces that do not void the bene�ts of morphing wings presents challenges that can be addressed with micro�ber composite actuators (MFCs). We present two approaches for realizing control surfaces. In one approach, �ap-like structures are formed by bonding MFCs to each side of a metal substrate. In the other approach, MFCs are bonded directly to the wing. Counter intuitively, the �ap approach resulted in larger voltage actuation curvatures, with increased mass load. Actuation performance, de�ned as the ratio of curvature per applied voltage, was as large as 5.8 ± 0.2 × 10 −4 (kV⋅mm) −1 . e direct bonding approach reveals that at zero wing pressure, up to 63 ± 3 m of displacement could be realized.

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