Abstract
When a racing car moves at high velocity, aerodynamic factors will cause a lift and drag force, causing the speeding vehicle to lose stability, traction and speed. To solve this problem, racing cars use a rear spoiler as a medium to reduce drag and lift, increasing the car’s stability. This study explores the idea that focuses on the impact of the angle of attack on UniART SAE race car performance and the effect of angle of attack on drag force and downforce. ANSYS Fluent is used to generate the simulation In the context of the lift force analysis, angle of attack equal to 12.5° produce the most outstanding results and generated the highest negative lift force value between three tested angles. The highest negative lift force generated is 35.658 N at the inlet velocity of 105 km/h. Furthermore, by referring to drag force analysis, it shows an increasing trend when the variable angle of attack parameter is changed to a higher value. Angle 25° produced the highest drag force data which is 60N and the inlet velocity condition is set equal to 105 km/h.
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