Study of Drag Force Applied In the Body of a Super Economic Vehicle 2008-36-0053

This work was made for drag force determination applied over the body of a super economic vehicle and respectively the drag coefficient, through a model in reduced scale, aerodynamic methods measurements in wind tunnel and CFD. For the research was built a model in vehicle scale of 1:6, where is analyzed in a wind tunnel with open section of 0.28 m². The research were accomplished by drag force in a scale model where was determined through a data acquisition system that is made up: a flexible stem located at the centre of the model, tied to the same a string that made traction in the system through a rolling and a mass on the balance in the wind tunnel external part. The main results obtained in the accomplished work were the drag coefficient for a very low speed of 3.6 km/h so with that the determination drag coefficient can have an estimate drag force applied in the vehicle body that belongs to 3.56 N to a speed of 25 km/h.