In this project, I modelled a UAV wing with propellers using the numerical non-linear lifting line method. This was done in two parts: first I analyzed the performance of the wing without including the effect of the propeller wake. This included calculating the lift distribution, relationship between coefficient of lift and angle of attack, and stall behavior. Then, I layered in a model of the (simplified) effect of propeller wake on different sections of the wing. Using this method, I was able to observe the effect of changing propeller thrust and freestream angle of attack on the wing's performance, such as when entering a stall.