Журнал аэронавтики и аэрокосмической техники
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Analysis of Stepped Airfoil by Comparing with the Conventional NACA4415 Airfoil

Nagesh Devareddy*, Deepa MS, Hari Krishna S, Anushree N, Bhavana A J, Monika Chavan A

Stepped airfoils offer certain advantages over conventional airfoil. This work was aimed to investigate the performance of stepped airfoils at low speed to explore the potential applications of such airfoils in Unmanned Aerial Vehicles (UAV). The flow is defined as two dimensional, incompressible, laminar, unsteady flows. Aerodynamic performance characteristics were studied by comparing the experimental results with previous studies related to stepped airfoils. The Ansys fluent is a modeling tool and simulation tool for two dimensional stepped airfoils. At first, NACA4415 airfoil is analyzed at low Reynolds number. Later, the stepped airfoil is analyzed at same boundary conditions. Thus the effect of step on the aerodynamic characteristics of an airfoil can be known and if the newly designed stepped airfoil generates more lift and less drag compare to conventional airfoil, then the step on airfoil helps in preventing the flow separation. This result has more advantages in the modern aviation and can be explored to the application of stepped airfoil in UAVs.