{
  "revision": "P3.5 four-wheel yaw and airflow coordination screen",
  "physical_measurements": 0,
  "new_isolation_and_control_hardware_mass_allowance_kg": 15.0,
  "track_width_m_assumed": 1.9,
  "yaw_radius_of_gyration_m_assumed": 1.3,
  "air_port_lateral_offset_m_assumed": 0.75,
  "upper_mean_angle_deg": 130.0,
  "upper_differential_angle_limit_deg": 20.0,
  "outlet_Cp_assumed": 0.5,
  "front_cornering_stiffness_N_rad_each_assumed": 60000.0,
  "rear_cornering_stiffness_N_rad_each_assumed": 90000.0,
  "front_roll_load_fraction_assumed": 0.5,
  "brake_force_time_constant_s_assumed": 0.025,
  "brake_force_rate_limit_N_s_each_assumed": 250000.0,
  "steering_time_constant_s_assumed": 0.05,
  "steering_angle_limit_deg_assumed": 8.0,
  "steering_rate_limit_deg_s_assumed": 80.0,
  "yaw_sensor_delay_s_assumed": 0.02,
  "wheel_control_period_s": 0.01,
  "air_control_period_s": 0.05,
  "port_fault_detection_delay_s_assumed": 0.05,
  "isolation_transition_s_assumed": 0.15,
  "grip_estimation_time_constant_s_assumed": 0.12,
  "grip_probe_rate_per_s_assumed": 0.0,
  "vector_actuator_torque_Nm_each_assumed": 60.0,
  "vector_actuator_efficiency_assumed": 0.65,
  "isolation_actuation_DC_energy_J_assumed": 300.0,
  "control_electrical_power_W_assumed": 1000.0,
  "lane_half_width_m_assumed": 1.8,
  "vehicle_half_width_m_assumed": 1.0,
  "vehicle_half_length_m_assumed": 2.4,
  "heading_limit_deg_for_test": 3.0,
  "lateral_path_error_limit_m_for_test": 0.8,
  "tyre_capacity_margin_fraction_assumed": 0.97,
  "primary_sources": [
    "https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/thrust-force/",
    "https://www.mathworks.com/help/vdynblks/ref/combinedslipwheel2dof.html",
    "https://www.bosch-mobility.com/en/solutions/braking-systems/electronic-stability-program/"
  ],
  "limits": [
    "This is a force-level four-wheel yaw model with an ideal inner slip-limiting loop. Wheel rotation, a detailed tyre slip curve and hydraulic pressure dynamics are not solved.",
    "The virtual comparison controller includes differential wheel braking and heading/path feedback. It is not a measured Bugatti Chiron ESC system.",
    "Tyre cornering stiffness, inertia, steering and force-actuator rates, pressure boundary, valve isolation and sensing assumptions require qualification.",
    "Body pitch and roll load transfer are quasistatic. Suspension heave, pitch/roll transients, structural loads and real tyre/road characteristics remain unresolved.",
    "Upper nozzle momentum and local pressure reaction are included; changes to pressure forces on the surrounding body are still withheld.",
    "One shared inlet and rotor feeds two independently commanded upper banks. Each bank represents two ports. Selective paired isolation is a new hardware requirement, not installed vehicle CAD.",
    "The power node and finite stores remain explicit. No cold-flow improvement or cryogenic electricity is credited to the driving results.",
    "Grip adaptation assumes ideal force/saturation feedback with stated delays. It is not a qualified road-friction estimator.",
    "The lane and heading thresholds are research test conditions, not road certification criteria. Deterministic scenarios do not prove universal stability.",
    "The rear cornering-stiffness target was increased from 70 to 90 kN/rad per tyre after a linear lateral-stability check. This requires a real tyre/compliance design and measurement; it is not a measured grip gain.",
    "After observed saturation, the within-stop grip estimate is held conservatively rather than raised without an informative force probe. Grip recovery on a drier patch is not exploited in this revision."
  ],
  "steering_actuator_torque_Nm_assumed": 100.0,
  "steering_actuator_efficiency_assumed": 0.65,
  "adaptive_reserve_loss": 0.1,
  "minimum_adaptive_brake_margin": 0.7,
  "paired_isolation_unmet_yaw_threshold_Nm": 500.0,
  "air_vectoring_grip_difference_threshold": 0.08,
  "air_vector_force_improvement_deadband_N": 50.0
}