Abstract
A macrofiber piezoelectric composite has been developed for boundary layer managementof micro-air vehicles (MAVs). Specifically, a piezoelectric composite that is capable ofself-sensing and controlling flow has been modeled, designed, fabricated, and tested in windtunnel studies to quantify performance characteristics, such as the velocity field response toactuation, which is relevant for actively managing boundary layers (laminar and transitionflow control). A nonlinear piezoelectric plate model was utilized to design the activestructure for flow control. The dynamic properties of the piezoelectric composite actuatorwere also evaluated in situ during wind tunnel experiments to quantify sensingperformance. Results based on velocity field measurements and unsteady pressuremeasurements show that these piezoelectric macrofiber composites can sensethe state of flow above the surface and provide sufficient control authority tomanipulate the flow conditions for transition from laminar to turbulent flow.
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