5). The majority of studies have been carried out with scaled models of dragon fly forewings from the Aeshna Cyanea in either wind tunnels or water channels. In this paper, we study the aerodynamics of a corrugated airfoil using computational fluid dynamics at a low Reynolds number of 1000. Structural analysis is also performed using the commercial software SolidWorks 2009. The flow field is described by solving the incompressible Navier-Stokes equations on an overlapping grid using pressure-Poisson method. The equations are discretized in space with second-order accurate central differences. Time integration is achieved through the secondorder Crank-Nicolson implicit method. The complex vortex structures that form in the corrugated airfoil valleys and around the corrugated airfoil is studied in detail. Comparisons are made with experimental measurement at different Reynolds numbers and also with simulations of a flat plate. Contrary to the studies at high Reynolds numbers, our study shows that at low Reynolds numbers the corrugation does not provide any aerodynamic benefit compared to a flat plate. Instead, the corrugated airfoil generates more drag than the flat plate. Structural analysis shows that the wing corrugation can increase the resistance to bending moments on the wing structure. A smoothed structure has to be three times thicker to provide the same resistance. We conclude the corrugated wing has the structural benefit to provide the same resistance to bending moments with a much reduced thickness and weight.