Adams Car Package > Adams Car > Appendix > All About SVC (Static Vehicle Characteristics) > Caster Angle, Caster Angle with Respect to Body

Caster Angle, Caster Angle with Respect to Body

The angle in the side elevation between the steering axis (such as kingpin axis) and the vertical. Caster is reported in degrees, and is positive if the steering axis is inclined upward and rearward. SVC computes caster for the front suspension only. When measured with respect to vehicle body, caster angle is the angle between the steering axis and the body z-axis (or yz plane).

Computed by:

SVCFAN (SVCFAB)

Input Variables Used:

Left and right kingpin marker identifiers (idksil, idksir)
Global origin marker identifier (gblm) (Body frame marker identifier (idbcm))

Method:

SVC uses the INFO utility subroutine to retrieve the Euler angles of the kingpin marker with respect to the global marker. SVC assumes the z-axis of the kingpin marker points up the kingpin axis.
Caster = (180/pi ) arctan( sin (psi) tan(theta) )
Caster Angle