{
  "evidence": "PUBLISHED_BENCHMARKS_PLUS_CALIBRATED_HIGH_SPEED_FORCE_ENVELOPE_PROJECTIONS_NO_HARDWARE_TEST",
  "source_specifications": "https://bugatti-newsroom.imgix.net/66703700d9bf8f4b7ce9211c/211122_BU_Chiron%20ENG.pdf",
  "source_400kmh_record": "https://newsroom.bugatti.com/en/press-releases/0-400-0-km-h-in-42-seconds-bugatti-chiron-sets-world-record",
  "published_distances_m": {
    "100": 31.4,
    "200": 114.0,
    "300": 247.0,
    "400": 491.0
  },
  "published_DIN_empty_mass_kg": 1995,
  "actual_record_test_mass_known": false,
  "reference_configuration": {
    "status": "CONDITIONAL_DYNAMICS_PROJECTION_NOT_A_REAL_CAR_DIGITAL_TWIN",
    "reference_name": "28 m benchmark-equivalent high-performance platform",
    "reference_distance_100_to_0_m": 28,
    "reference_source": "https://www.koenigsegg.com/technical-specifications-one1",
    "reference_limit": "One published stopping distance calibrates an equivalent longitudinal parameter; it does not identify Koenigsegg tyre maps, geometry, steering, aero balance or real vehicle behaviour.",
    "base_mass_kg": 1995.0,
    "installed_hardware_mass_target_kg": 170,
    "wheelbase_m": 2.711,
    "track_m": 1.705,
    "cg_height_m": 0.5,
    "yaw_inertia_base_kgm2": 3325.0,
    "front_static_weight_fraction": 0.5,
    "drag_area_m2": 0.9,
    "air_density_kgm3": 1.2,
    "gravity_ms2": 9.81,
    "corner_stiffness_per_normal_N_per_rad_per_N_assumed": 15,
    "tyre_load_sensitivity_exponent_assumed": 0.08,
    "pad_to_reference_tyre_friction_ratio_assumed": 1.0,
    "yaw_rate_gain_sinv": 4,
    "sideslip_gain_sinv": 1.5,
    "steering_time_constant_s_assumed": 0.07,
    "max_steering_angle_rad": 0.25,
    "step_s": 0.005,
    "maximum_time_s": 40,
    "fan_store_J_assumed": 100000,
    "fan_pressure_response_s_assumed": 0.05,
    "deployment_start_s_assumed": 0.15,
    "deployment_duration_s_assumed": 0.6,
    "gas_tank": {
      "initial_mass_kg": 3,
      "reserve_mass_kg": 0.5,
      "initial_pressure_Pa": 2000000,
      "initial_temperature_K": 313.15,
      "gas_constant_JkgK": 296.8,
      "gamma": 1.4,
      "two_nozzle_throat_diameter_m_assumed": 0.02,
      "mass_discharge_coefficient_assumed": 0.9,
      "yaw_lever_each_m": 1.4,
      "scope": "Precharged gaseous N2 reference, not continuous liquid-N2 evaporation. Adiabatic tank blowdown and converging-nozzle pressure thrust; no upstream replenishment benefit is assumed.",
      "reserve_valve_closing_time_s_assumed": 0.02
    },
    "limits": [
      "Planar rigid body plus quasistatic normal-load transfer; no dynamic roll, pitch, suspension, wheel rotation or tyre slip-state model.",
      "Force-circle and corner-stiffness relations are approximate assumed envelopes, not measured tyre/pad maps.",
      "An ideal yaw-priority coordinated brake allocator is common to baseline and prototype. Perfect friction/state knowledge is granted to both.",
      "Surface factors are hypothetical friction multipliers, not measured dry/wet/snow/ice coefficients.",
      "Full wheel-shoe deployment is an imposed stress-test contact transition, not a proven mechanism or road procedure.",
      "Published P1/P2 CFD drag differences are not transferred to these high-performance projections; aerodynamic drag is held matched.",
      "Body suction and fully deployed wheel-shoe suction are separate architectural candidates. Installed force/power comes from the assumed ground-module map.",
      "Prototype mass, fan map, pad friction, timing and gas nozzle inputs are targets/sensitivities, not achieved hardware."
    ],
    "underfloor": {
      "bench_area_m2": 0.028899,
      "bench_total_perimeter_m": 1.456,
      "bench_cavity_height_m": 0.008,
      "compartment_count": 4,
      "bench_feed_duct_diameter_m": 0.015,
      "duct_loss_coefficient_assumed": 2,
      "cell_centres_body_m": [
        [
          0.6225,
          0.2975
        ],
        [
          0.6225,
          -0.2975
        ],
        [
          -0.6225,
          0.2975
        ],
        [
          -0.6225,
          -0.2975
        ]
      ],
      "bench_outer_length_m": 0.25,
      "bench_outer_width_m": 0.12,
      "bench_partition_width_m": 0.001,
      "mode_routing": "Same wheel-fan source docks to four underfloor feed lines while tyres roll. After stopping, supported pads and isolation valves permit undocking and wheel tilt; fans then serve local annular shoes. Full-capacity contributions are not added.",
      "scope": "Proposed manifold/geometry and assumed fan map, not tested hardware."
    },
    "initial_fan_spin_energy_J_assumed": 8000.0,
    "airbrake_reference": {
      "initial_Cd": 0.36,
      "airbrake_Cd": 0.6,
      "projected_frontal_area_m2_assumed": 2.0,
      "deployment_duration_s_assumed": 0.8,
      "rear_downforce_increment_kg_equivalent_at_400kmh": 900.0,
      "downforce_application_x_m_assumed": -1.3555,
      "source": "https://bugatti-newsroom.imgix.net/66703700d9bf8f4b7ce9211c/211122_BU_Chiron%20ENG.pdf",
      "rear_load_and_deployment_source": "https://newsroom.bugatti.com/en/press-releases/0-400-0-km-h-in-42-seconds-bugatti-chiron-sets-world-record",
      "scope": "Published Cd endpoints and nominal rear-load increment. Frontal area, linear deployment interpolation, force location, CG, axle loads and inertia are assumptions. Other aero/tyre/brake effects are absorbed into a separately fitted equivalent parameter."
    }
  },
  "calibrations": [
    {
      "speed_kmh": 100,
      "published_distance_m": 31.4,
      "calibrated_distance_m": 31.399999979871726,
      "equivalent_parameter_not_measured_tyre_mu": 1.242452727861517,
      "calibrated_model_stop_time_s": 2.269999999999974
    },
    {
      "speed_kmh": 200,
      "published_distance_m": 114.0,
      "calibrated_distance_m": 114.00000079393843,
      "equivalent_parameter_not_measured_tyre_mu": 1.2960772014559432,
      "calibrated_model_stop_time_s": 4.194999999999933
    },
    {
      "speed_kmh": 300,
      "published_distance_m": 247.0,
      "calibrated_distance_m": 247.00000090617456,
      "equivalent_parameter_not_measured_tyre_mu": 1.2249586332695004,
      "calibrated_model_stop_time_s": 6.239999999999889
    },
    {
      "speed_kmh": 400,
      "published_distance_m": 491.0,
      "calibrated_distance_m": 490.9999999894235,
      "equivalent_parameter_not_measured_tyre_mu": 0.9435193683157996,
      "calibrated_model_stop_time_s": 9.770000000000127
    }
  ],
  "comparisons": [
    {
      "speed_kmh": 100,
      "published_Chiron_distance_m": 31.4,
      "conditional_prototype_distance_m": 26.44356572050051,
      "conditional_distance_reduction_m": 4.95643427949949,
      "conditional_distance_reduction_fraction": 0.15784822546176724,
      "fan_energy_used_kJ_including_assumed_prespinnning": 11.415056366937584,
      "example_stability_limits_pass": true
    },
    {
      "speed_kmh": 200,
      "published_Chiron_distance_m": 114.0,
      "conditional_prototype_distance_m": 95.65863306535485,
      "conditional_distance_reduction_m": 18.34136693464515,
      "conditional_distance_reduction_fraction": 0.16088918363723814,
      "fan_energy_used_kJ_including_assumed_prespinnning": 14.672244537366568,
      "example_stability_limits_pass": true
    },
    {
      "speed_kmh": 300,
      "published_Chiron_distance_m": 247.0,
      "conditional_prototype_distance_m": 210.2685677048865,
      "conditional_distance_reduction_m": 36.73143229511351,
      "conditional_distance_reduction_fraction": 0.14871025220693723,
      "fan_energy_used_kJ_including_assumed_prespinnning": 18.25823403730258,
      "example_stability_limits_pass": true
    },
    {
      "speed_kmh": 400,
      "published_Chiron_distance_m": 491.0,
      "conditional_prototype_distance_m": 427.882456926026,
      "conditional_distance_reduction_m": 63.11754307397399,
      "conditional_distance_reduction_fraction": 0.12854896756410183,
      "fan_energy_used_kJ_including_assumed_prespinnning": 24.577384588765753,
      "example_stability_limits_pass": true
    }
  ],
  "cases": [
    {
      "mode": "reference",
      "speed_kmh": 100,
      "scenario": "uniform-high-speed",
      "stop_time_s": 2.269999999999974,
      "path_distance_m": 31.399999979871726,
      "X_end_m": 31.399999979871726,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09976211767810195,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0011976129608228803,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 0.7696759259259259,
        "aerodynamic_energy_dissipated_MJ": 0.0072508803669455784,
        "remaining_brake_tyre_energy_reference_MJ": 0.7624250455589804,
        "peak_combined_brake_tyre_power_reference_MW": 0.6699166966774848,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "mass-only",
      "speed_kmh": 100,
      "scenario": "uniform-high-speed",
      "stop_time_s": 2.2899999999999734,
      "path_distance_m": 31.63942040492548,
      "X_end_m": 31.63942040492548,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.08216701549074001,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.001618026290088892,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 0.8352623456790124,
        "aerodynamic_energy_dissipated_MJ": 0.007314861223012814,
        "remaining_brake_tyre_energy_reference_MJ": 0.8279474844559995,
        "peak_combined_brake_tyre_power_reference_MW": 0.7223546511303739,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "body-suction",
      "speed_kmh": 100,
      "scenario": "uniform-high-speed",
      "stop_time_s": 1.874999999999982,
      "path_distance_m": 26.44356572050051,
      "X_end_m": 26.44356572050051,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.08953212983588826,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 11415.056366937584,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0036953602684661746,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 0.8352623456790124,
        "aerodynamic_energy_dissipated_MJ": 0.006162444120229883,
        "remaining_brake_tyre_energy_reference_MJ": 0.8290999015587824,
        "peak_combined_brake_tyre_power_reference_MW": 0.78060785778164,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "reference",
      "speed_kmh": 200,
      "scenario": "uniform-high-speed",
      "stop_time_s": 4.194999999999933,
      "path_distance_m": 114.00000079393843,
      "X_end_m": 114.00000079393843,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.0790114978722174,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0018877014517784119,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 3.0787037037037037,
        "aerodynamic_energy_dissipated_MJ": 0.11128104748280156,
        "remaining_brake_tyre_energy_reference_MJ": 2.967422656220902,
        "peak_combined_brake_tyre_power_reference_MW": 1.395469205494416,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "mass-only",
      "speed_kmh": 200,
      "scenario": "uniform-high-speed",
      "stop_time_s": 4.234999999999932,
      "path_distance_m": 115.30481747144157,
      "X_end_m": 115.30481747144157,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.08820380003092973,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0017699385061860085,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 3.3410493827160495,
        "aerodynamic_energy_dissipated_MJ": 0.1127990970676724,
        "remaining_brake_tyre_energy_reference_MJ": 3.228250285648377,
        "peak_combined_brake_tyre_power_reference_MW": 1.504827392977423,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "body-suction",
      "speed_kmh": 200,
      "scenario": "uniform-high-speed",
      "stop_time_s": 3.4599999999999485,
      "path_distance_m": 95.65863306535485,
      "X_end_m": 95.65863306535485,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09237408769301764,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 14672.244537366569,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.004205029923468828,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 3.3410493827160495,
        "aerodynamic_energy_dissipated_MJ": 0.09392998581958686,
        "remaining_brake_tyre_energy_reference_MJ": 3.2471193968964625,
        "peak_combined_brake_tyre_power_reference_MW": 1.7610195299893714,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "reference",
      "speed_kmh": 300,
      "scenario": "uniform-high-speed",
      "stop_time_s": 6.239999999999889,
      "path_distance_m": 247.00000090617456,
      "X_end_m": 247.00000090617456,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.0885987922699848,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.001328207552433014,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 6.927083333333332,
        "aerodynamic_energy_dissipated_MJ": 0.5453663593178182,
        "remaining_brake_tyre_energy_reference_MJ": 6.3817169740155135,
        "peak_combined_brake_tyre_power_reference_MW": 2.0354248244323676,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "mass-only",
      "speed_kmh": 300,
      "scenario": "uniform-high-speed",
      "stop_time_s": 6.324999999999887,
      "path_distance_m": 251.2628470043348,
      "X_end_m": 251.2628470043348,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09803962190758649,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0012276647612452507,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 7.51736111111111,
        "aerodynamic_energy_dissipated_MJ": 0.5569131846800293,
        "remaining_brake_tyre_energy_reference_MJ": 6.960447926431081,
        "peak_combined_brake_tyre_power_reference_MW": 2.1820571096894987,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "body-suction",
      "speed_kmh": 300,
      "scenario": "uniform-high-speed",
      "stop_time_s": 5.204999999999911,
      "path_distance_m": 210.2685677048865,
      "X_end_m": 210.2685677048865,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.08902839612652119,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 18258.23403730258,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0035209134221076965,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 7.51736111111111,
        "aerodynamic_energy_dissipated_MJ": 0.46978896369552114,
        "remaining_brake_tyre_energy_reference_MJ": 7.047572147415589,
        "peak_combined_brake_tyre_power_reference_MW": 2.6548826632085034,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "reference",
      "speed_kmh": 400,
      "scenario": "uniform-high-speed",
      "stop_time_s": 9.770000000000127,
      "path_distance_m": 490.9999999894235,
      "X_end_m": 490.9999999894235,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09425191246619768,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0004311557859182358,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 12.314814814814815,
        "aerodynamic_energy_dissipated_MJ": 1.8655944820250663,
        "remaining_brake_tyre_energy_reference_MJ": 10.449220332789748,
        "peak_combined_brake_tyre_power_reference_MW": 2.450748571538651,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "mass-only",
      "speed_kmh": 400,
      "scenario": "uniform-high-speed",
      "stop_time_s": 9.955000000000156,
      "path_distance_m": 503.253526968459,
      "X_end_m": 503.253526968459,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09503169032212828,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.00045086629688739777,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 13.364197530864198,
        "aerodynamic_energy_dissipated_MJ": 1.9244938199157413,
        "remaining_brake_tyre_energy_reference_MJ": 11.439703710948455,
        "peak_combined_brake_tyre_power_reference_MW": 2.604233583756034,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "uniform-high-speed",
      "stop_time_s": 8.279999999999895,
      "path_distance_m": 427.882456926026,
      "X_end_m": 427.882456926026,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09946194853778723,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 24577.38458876575,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0010802540928125381,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true,
      "energy_partition": {
        "initial_kinetic_energy_MJ": 13.364197530864198,
        "aerodynamic_energy_dissipated_MJ": 1.6581025748711604,
        "remaining_brake_tyre_energy_reference_MJ": 11.706094955993038,
        "peak_combined_brake_tyre_power_reference_MW": 3.0339967170259774,
        "scope": "Straight-line body-energy partition. No disc/pad/tyre temperature, heat split, fade or torque ceiling is predicted."
      }
    }
  ],
  "stress_cases": [
    {
      "mode": "reference",
      "speed_kmh": 400,
      "scenario": "400-crosswind-pulse",
      "stop_time_s": 10.075000000000175,
      "path_distance_m": 502.4299469797349,
      "X_end_m": 502.41445836760045,
      "Y_end_m": -0.00206759009422838,
      "heading_end_deg": -0.27073615939231854,
      "speed_end_ms": 0.09497512673486029,
      "yaw_end_rads": 8.827847769129444e-05,
      "max_yaw_rate_rads": 0.17663792703248749,
      "max_sideslip_deg": 1.6374869905258576,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0.1989582083130059,
      "heading_error_to_path_end_deg": -0.2707361593923186,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0007924214005470276,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000004,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "400-crosswind-pulse",
      "stop_time_s": 8.399999999999913,
      "path_distance_m": 432.43870161754853,
      "X_end_m": 432.4350186057432,
      "Y_end_m": -0.008979097902711775,
      "heading_end_deg": 0.13549053393284105,
      "speed_end_ms": 0.09834624642189524,
      "yaw_end_rads": -7.332943808972953e-06,
      "max_yaw_rate_rads": 0.08959251613520022,
      "max_sideslip_deg": 0.7619751351986307,
      "fan_energy_used_J": 24823.98558589602,
      "max_path_error_m": 0.1005267432415455,
      "heading_error_to_path_end_deg": 0.13549053393284105,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0013143476098775864,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "reference",
      "speed_kmh": 400,
      "scenario": "400-curve-0p4g-initial",
      "stop_time_s": 14.800000000000914,
      "path_distance_m": 705.544328877059,
      "X_end_m": 697.2474166475128,
      "Y_end_m": 10.530177675173208,
      "heading_end_deg": 490.797997142847,
      "speed_end_ms": 0.08842081526227216,
      "yaw_end_rads": -0.007291731736908527,
      "max_yaw_rate_rads": 1.9378922905718743,
      "max_sideslip_deg": 89.62025584283379,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 68.8513571556382,
      "heading_error_to_path_end_deg": 118.26165957465663,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.009233256801962852,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": false
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "400-curve-0p4g-initial",
      "stop_time_s": 12.21500000000051,
      "path_distance_m": 577.8563268786903,
      "X_end_m": 569.3232302391059,
      "Y_end_m": 12.646552435800453,
      "heading_end_deg": 319.5772809263589,
      "speed_end_ms": 0.088460784661356,
      "yaw_end_rads": 0.007531303902170624,
      "max_yaw_rate_rads": 1.7881783448547295,
      "max_sideslip_deg": 89.73207639115527,
      "fan_energy_used_J": 32663.842286329193,
      "max_path_error_m": 38.652650460163386,
      "heading_error_to_path_end_deg": -50.72025004650005,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.02123887836933136,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000004,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": false
    },
    {
      "mode": "reference",
      "speed_kmh": 400,
      "scenario": "400-one-channel-loss",
      "stop_time_s": 9.770000000000127,
      "path_distance_m": 490.9999999894235,
      "X_end_m": 490.9999999894235,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09425191246619768,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 0.0,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0004311557859182358,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "400-one-channel-loss",
      "stop_time_s": 8.684999999999958,
      "path_distance_m": 444.1734939413255,
      "X_end_m": 444.1734939413255,
      "Y_end_m": 1.4023029078225845e-17,
      "heading_end_deg": 2.119609784429734e-16,
      "speed_end_ms": 0.07821279348356969,
      "yaw_end_rads": -1.4703147603719573e-18,
      "max_yaw_rate_rads": 1.0502248288370998e-16,
      "max_sideslip_deg": 2.0442813261581325e-15,
      "fan_energy_used_J": 25409.662954080413,
      "max_path_error_m": 3.083816638715082e-16,
      "heading_error_to_path_end_deg": 2.119609784429734e-16,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0014606770128011703,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    }
  ],
  "sensitivity_cases": [
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "half-mm-effective-gap",
      "stop_time_s": 7.859999999999855,
      "path_distance_m": 408.3819632958544,
      "X_end_m": 408.3819632958544,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.08355956374254847,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 20000.107945049735,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0017398819327354431,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "three-mm-effective-gap",
      "stop_time_s": 9.420000000000073,
      "path_distance_m": 479.43526076002007,
      "X_end_m": 479.43526076002007,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09131973909097853,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 19199.70294576192,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.000628303736448288,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "one-second-fan-delay",
      "stop_time_s": 8.389999999999912,
      "path_distance_m": 438.90516460352495,
      "X_end_m": 438.90516460352495,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.08524774380670916,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 23056.678439795753,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0012989193201065063,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "two-second-fan-delay",
      "stop_time_s": 8.524999999999933,
      "path_distance_m": 451.1976559920332,
      "X_end_m": 451.1976559920332,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.09973482773275254,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 21275.681608004277,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0009930897504091263,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    },
    {
      "mode": "body-suction",
      "speed_kmh": 400,
      "scenario": "340kg-hardware",
      "stop_time_s": 8.514999999999931,
      "path_distance_m": 441.13613969031235,
      "X_end_m": 441.13613969031235,
      "Y_end_m": 0.0,
      "heading_end_deg": 0.0,
      "speed_end_ms": 0.07989375324286921,
      "yaw_end_rads": 0.0,
      "max_yaw_rate_rads": 0,
      "max_sideslip_deg": 0.0,
      "fan_energy_used_J": 25060.311541479197,
      "max_path_error_m": 0,
      "heading_error_to_path_end_deg": 0.0,
      "gas_used_kg": 0.0,
      "final_gas_temperature_K": 313.15,
      "body_kinetic_energy_residual_J": -0.0013845358043909073,
      "max_normal_load_residual_N": 7.275957614183426e-12,
      "max_force_circle_utilization": 1.0000000000000002,
      "stopped": true,
      "scope": "Conditional ideal-control force-envelope trajectory; not a measured vehicle or road deployment result.",
      "meets_illustrative_stability_target": true
    }
  ],
  "projected_area_sensitivity_with_refit": [
    {
      "assumed_projected_area_m2": 1.6,
      "refit_equivalent_parameter": 0.974294821671849,
      "reference_distance_m": 490.99999993963746,
      "prototype_projection_m": 425.62130071491396
    },
    {
      "assumed_projected_area_m2": 2.4,
      "refit_equivalent_parameter": 0.9133544332835112,
      "reference_distance_m": 490.9999999950012,
      "prototype_projection_m": 430.0972207433209
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  ],
  "time_step_checks": [
    {
      "mode": "reference",
      "distance_relative_change": 9.238387832510853e-12,
      "normal_load_residual_N": 7.275957614183426e-12
    },
    {
      "mode": "body-suction",
      "distance_relative_change": 1.313592937357555e-05,
      "normal_load_residual_N": 7.275957614183426e-12
    }
  ],
  "installed_static_fan_map_assumptions": [
    {
      "gap_m": 0.0005,
      "geometric_scale_from_bench": 10,
      "speed_fraction": 1,
      "vacuum_Pa": 2670.6309629957386,
      "downward_pressure_force_N": 7717.856419961385,
      "volume_flow_at_cavity_m3s": 0.3191066560056167,
      "mass_flow_kgs": 0.37402410475784476,
      "electrical_power_W_assumed_map": 1569.293649894007,
      "fan_pressure_rise_Pa": 2694.512678973223,
      "feed_duct_loss_Pa": 23.881715977484344
    },
    {
      "gap_m": 0.001,
      "geometric_scale_from_bench": 10,
      "speed_fraction": 1,
      "vacuum_Pa": 2012.2008568363194,
      "downward_pressure_force_N": 5815.059256171279,
      "volume_flow_at_cavity_m3s": 0.5525087131363985,
      "mass_flow_kgs": 0.6516012788276261,
      "electrical_power_W_assumed_map": 2055.0083094199717,
      "fan_pressure_rise_Pa": 2084.202316587596,
      "feed_duct_loss_Pa": 72.00145975127671
    },
    {
      "gap_m": 0.003,
      "geometric_scale_from_bench": 10,
      "speed_fraction": 1,
      "vacuum_Pa": 559.0113456911354,
      "downward_pressure_force_N": 1615.486887912812,
      "volume_flow_at_cavity_m3s": 0.8681410150431104,
      "mass_flow_kgs": 1.037720487504869,
      "electrical_power_W_assumed_map": 1216.4570927479228,
      "fan_pressure_rise_Pa": 738.9935140971138,
      "feed_duct_loss_Pa": 179.98216840597843
    }
  ],
  "high_speed_pressure_scales": [
    {
      "speed_kmh": 100,
      "ambient_dynamic_pressure_Pa": 462.962962962963,
      "illustrative_delta_Cp_0p1_pressure_Pa": 46.296296296296305,
      "Mach_at_343ms_assumed": 0.08098477486232589,
      "kinetic_energy_relative_to_100kmh": 1.0
    },
    {
      "speed_kmh": 200,
      "ambient_dynamic_pressure_Pa": 1851.851851851852,
      "illustrative_delta_Cp_0p1_pressure_Pa": 185.18518518518522,
      "Mach_at_343ms_assumed": 0.16196954972465177,
      "kinetic_energy_relative_to_100kmh": 4.0
    },
    {
      "speed_kmh": 300,
      "ambient_dynamic_pressure_Pa": 4166.666666666666,
      "illustrative_delta_Cp_0p1_pressure_Pa": 416.66666666666663,
      "Mach_at_343ms_assumed": 0.24295432458697763,
      "kinetic_energy_relative_to_100kmh": 9.0
    },
    {
      "speed_kmh": 400,
      "ambient_dynamic_pressure_Pa": 7407.407407407408,
      "illustrative_delta_Cp_0p1_pressure_Pa": 740.7407407407409,
      "Mach_at_343ms_assumed": 0.32393909944930355,
      "kinetic_energy_relative_to_100kmh": 16.0
    }
  ],
  "limits": [
    "Each starting-speed test has its own fitted aggregate parameter. These independent calibration points do not identify a common measured tyre, brake, fade or aero map, and are not independent model validation.",
    "The shared reference includes the published air-brake Cd and the stated rear-load increment. Frontal area, force location, deployment interpolation, CG and inertia are assumptions.",
    "Additional normal load is assumed to be exploitable by tyre/brake control. A real torque or thermal ceiling can remove that benefit; disc/pad/tyre temperatures and fade are not modelled.",
    "The assumed 170 kg installed mass, 1 mm effective seal gap, fan map and rapid pressure availability are not achieved hardware measurements.",
    "An 8 kJ rotor pre-spin allowance is charged against the 100 kJ store. It is an illustrative energy allowance; maintaining standby speed, motor peak power, inertia and valve operation remain unverified.",
    "At 400 km/h ambient dynamic pressure exceeds the assumed fan stall head. Vehicle-specific underfloor Cp, moving-road leakage, compressibility, wheel speed and flexible skirts require coupled high-speed analysis and tests.",
    "No 16.4% low-speed CFD drag benefit is transferred. Reference and prototype retain the same assumed external-airbrake map.",
    "The direct cold-only bench model does not supply this fan power. The high-speed gain is a powered-suction hypothesis, not proof of net cryogenic energy generation.",
    "The original high-speed road-wheel deployment concept is not credited. Tyres retain rolling steering contact in these comparisons."
  ],
  "physical_measurements_for_CryoPulse": 0
}