A novel approach to the design of rear airfoil pylons on high performance car
Examensarbete för masterexamen
Automotive engineering (MPAUT), MSc
The continuous improvement of every aspect of the car is what makes Lamborghini one of the leading super sports car manufacturers of the world. One of the areas that is to be investigated is the pylon, which attaches the rear wing to the car body. There are two main aerodynamic components of the pylon that could help to increase the performance of the car; the reduction of drag on the pylon and the ability to create a lateral force that could help while the car is cornering. This thesis aims to make an initial aerodynamic investigation of the shape of the airfoil that makes up the pylon to see what benefits that could be gained. At the start of the thesis, it was concluded that the pylon should be symmetric to be able to handle oncoming wind from different directions and that the investigated wind attack angle should span from 0 deg to 15 deg with a focus on the 0 deg to 5 deg region. A base airfoil shape was developed using an optimization method and CFD to test many different shapes efficiently and find the best one out of those. With the base shape set, different geometrical features were added to the base to see if that could improve the airfoil performance. One of the concepts had slots that went through the base airfoil, another one was a double airfoil that consists of two smaller sections. The same optimization method was used for the slots respectively the shape of the two airfoil sections. The result of the thesis shows potential for the three investigated airfoil designs, though it has also been concluded that a closed single airfoil is a good design to begin with. In the focus span of 0 deg to 5 deg some open configurations were tested. When generating a lateral force the closed airfoil was the best one.
Airfoil , Pylon , Aerodynamics , CFD , Optimization