# Result File Configuration
RESULT_FILENAME = "0_steering_calculation_Speed0_Ratio20_RightTurn_0latForce_2Wheels.txt"

# Vehicle and Tire Parameters
VEHICLE_MASS = 450  # kg
WEIGHT_DISTRIBUTION_FRONT = 0.7  # fraction of weight on front axle
GRAVITY = 9.81  # m/s²

# Tire Parameters
TIRE_CONTACT_PATCH_LENGTH = 0.10  # m https://iopscience.iop.org/article/10.1088/1757-899X/632/1/012022/pdf
TIRE_CONTACT_PATCH_WIDTH = 0.145  # m tire width R13 145/60
PNEUMATIC_TRAIL = 0.030  # m (typical range: 0.010-0.030) https://en.wikipedia.org/wiki/Pneumatic_trail

# Road and Friction Parameters
FRICTION_COEFFICIENT = 0.9  # dry asphalt (range: 0.7-1.0)

# Steering Geometry Parameters
CASTER_ANGLE = 5.0  # degrees (typical range: 2-8)
SCRUB_RADIUS = 0.015  # m (positive = outward offset, negative = inward)
KINGPIN_INCLINATION = 15.0  # degrees (typical range: 5-12)
MECANICAL_TRAIL = 0.015  # m (also called caster offset)

# Steering System Parameters
MECHANICAL_ADVANTAGE = 1.0  # additional mechanical advantage from power steering
BEARING_FRICTION_COEFFICIENT = 0.02  # internal friction losses
STEERING_GEARBOX_RATIO = 10.0 # ratio of the steering reduction gearbox, between the steering wheel and the steering column
STEERING_GEARBOX_EFFICIENCY = 0.9 # efficiency between input and output shaft
STEERING_RATIO = 2*STEERING_GEARBOX_RATIO  # steering wheel degrees per wheel degree

# Operating Conditions
DESIRED_AXIAL_FORCE = 0  # N (in case of braking)
DESIRED_LATERAL_FORCE = 0  # N (can be calculated from cornering requirements)
VEHICLE_SPEED = 0  # km/h (for dynamic calculations if needed)

# Additional Parameters
TIRE_PRESSURE = 2.2  # bar (affects pneumatic trail)
ROAD_CAMBER = 0.0  # degrees (road banking angle)