The interaction between fluids and bodies is a complex phenomenon which is behind the forces observed in flight. Here we analyze the main aerodynamics forces, lift and drag, in several wing profiles and a cylinder. We consider the two main parameters of study, the drag and lift coefficients. These parameters were measured by using a wind tunnel for different wing profiles, at different angles of attack, and for a cylinder. The effect of winglets was also studied. The study allowed us to understand the elemental behavior of wings in planes and the reason to include winglets to improve the aerodynamic efficiency. 2016/2017