public Vector3 Drag(Vector3 localVelocity, float dynamicPressurekPa, float mach)
{
Vector3 drag = Vector3.zero;
for (int i = 0; i < count; i++)
{
SimulatedPart part = parts[i];
drag += part.Drag(localVelocity, dynamicPressurekPa, mach);
}
return(-localVelocity.normalized * drag.magnitude);
}
