Aerodynamics Module

Calculates and applies aerodynamic drag and downforce.

Drag

• Drag depends on vehicle dimensions. Those can be adjusted under vehicle's Settings tab. * Drag is calculated both in longitudinal and lateral directions. Intensity of drag can be adjusted through Frontal Cd and Side Cd (Cd = coefficient of drag) fields. Data for different vehicles is available Automobile drag coefficient data.

Downforce

Downforce is calculated in a simplified fashion by applying downforce to a number of points over the vehicle. In the simplest form a single downforce point at the center of the vehicle can be used, or one point at the front and one point at the end of the vehicle.

• Vertical position of Downforce Points should be below the WheelController position, or even as low as the floor of the vehicle. This is because all the force is applied in a single point which, if applied too high, can cause the vehicle to snap oversteer when changing direction.
• Downforce is not dependent on vehicle shape or dimensions. It is calculated through Downforce Points and Max Downforce Speed.
• Downforce increases exponentially from 0 to Max Downforce Speed at which it reaches Max Force value.
• Enable Gizmos to be able to see downforce points (red sphere).