Uav airfoil database3/24/2024 (2022), "Aerodynamic study of low Reynolds number airfoil and mini-unmanned aerial vehicle in simulated rain environment", Aircraft Engineering and Aerospace Technology, Vol. This will be also helpful for training the pilots to control the airplanes in a rain environment. The present study focuses on producibility and surface roughness characteristics of airfoil geometries and their effect on aerodynamic performance for different velocities, surface roughness values and angles of attack. UAV designers will benefit from the findings presented in this paper. The numerical results are impressively in agreement with the experimental results. For 3D mini-UAV, the recorded maximum variation of the coefficient of lift and L/D ratio are observed to be 2.84% and 4.60% at a 30° stall AOA under the influence of rainfall effect for LWC = 5.33. The L/D ratio percentage degradation is seen to be 61.9% at an AOA of 0°–2° for the rain environment. Whether its a wing for an aeroplane or a small drone, designing the optimum airfoil profile can be challenging. For 2D airfoil, the recorded maximum variation of the coefficient of lift and lift-to-drag (L/D) ratio is observed to be 5.33% at an 8° and 10.53% at a 4° angle of attack (AOA) between numerical and experimental results under the influence of rainfall effect for LWC = 5.33.
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