Abstract
Lift force that occurred on a speeding race car will cause the vehicle to lost its stability, traction and speed. Therefore, a car spoiler is installed on a race car to reduce the lift force, making the vehicle more stable. The present work investigated the impact of spoiler size on the drag force and downforce value on the UniART FSAE race car using simulation software. From the results, a larger spoiler size gives the highest downforce compared to other sizes. The downforce and the area of the spoiler showed a directly proportional relationship. The result of drag force led us to conclude drag force increase if the spoiler is mounted at the rear part of the car, however different sizes of spoiler doesn’t seem to have a big effect on the drag force.
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