{
  "physical_measurements": 0,
  "status": "DIMENSIONED_MASS_AND_STARTUP_REQUIREMENTS_NOT_QUALIFIED_HARDWARE",
  "floor_bank_mass_budget_kg": 80.0,
  "parts_kg": {
    "liquid-cooled motor, catalogue dry mass": 10.3,
    "HV inverter allowance": 4.0,
    "twenty-one dimensioned rotor blanks": 8.385770853958007,
    "three steel shafts": 6.031857894892404,
    "aluminium barrel shells": 5.8629658738354165,
    "stator rings and vanes": 1.9606658566009982,
    "bearings, seals and end caps": 4.92,
    "belt drive, pulleys and tensioners": 5.0,
    "four-cell manifold and isolation valves": 8.0,
    "external cooling, fluid and hoses": 8.0,
    "containment allowance": 6.0,
    "mounts and cables": 5.0
  },
  "subtotal_kg": 73.46126047928682,
  "remaining_mass_margin_kg": 6.538739520713179,
  "motor_source": "https://emrax.com/wp-content/uploads/2026/08/EMRAX_208_datasheet_v1.7.pdf",
  "motor_limits": {
    "mass_kg": 10.3,
    "peak_W_30s": 86000.0,
    "peak_Nm": 150.0,
    "continuous_W_LC": 47000.0,
    "continuous_Nm_LC": 75.0,
    "rotor_inertia_kgm2": 0.0239,
    "maximum_rpm": 7000.0
  },
  "rotor_blank_material": {
    "density_kg_m3_requirement": 2810.0,
    "material_direction": "High-strength aluminium; manufacturing, fatigue and corrosion qualification remain open."
  },
  "rotor_tip_diameter_m": 0.23,
  "stage_count": 21,
  "parallel_shafts": 3,
  "shaft_length_m": 0.8,
  "design_rpm": 6700.0,
  "tip_speed_ms": 78.27801695194569,
  "rotating_inertia_upper_screen_kgm2": 0.14313992500833622,
  "dimensioned_spin_DC_J_screen": 38295.681603141726,
  "retained_spin_DC_budget_J": 74373.96449704141,
  "minimum_selected_prelaunch_spin_schedule_s": 4.0,
  "upper_motor_power_during_schedule_W": 72000.53252503759,
  "fan_power_during_ramp_DC_J": 137649.4395942403,
  "prelaunch_readiness_is_outside_timed_launch": true,
  "floor": {
    "outer_m": [
      1.96,
      1.9
    ],
    "effective_area_m2": 3.6091,
    "external_leak_perimeter_m": 7.72,
    "extra_tray_and_carrier_mass_kg": 12.0,
    "longitudinal_span_vehicle_m": [
      1.42,
      3.38
    ],
    "vertical_packaging_span_m": [
      0.12,
      0.18
    ]
  },
  "drive": {
    "motor_inverter_module_kg": 73.0,
    "SR309_gearbox_kg": 26.0,
    "shafts_mounts_cooling_cables_allowance_kg": 26.0,
    "total_installed_budget_kg": 125.0,
    "peak_torque_Nm_ceiling": 580.0,
    "peak_power_W_ceiling": 400000.0,
    "input_speed_rpm_ceiling": 12000.0,
    "ratio": 3.09,
    "input_inertia_kgm2_requirement": 0.15,
    "gear_efficiency_requirement": 0.97,
    "source": "https://www.cascadiamotion.com/im-375"
  },
  "limits": [
    "The inherited pressure-flow map still needs measurement on this multistage cartridge. CAD mass and motor ratings do not prove that fan curve.",
    "The 80 kg mass includes explicit external cooling and containment allowances, which still need detailed design.",
    "The broad pressure deck is checked separately against suspension and wheel envelopes; other vehicle systems and crash structure still require integration.",
    "The 16 mOhm cell-resistance ceiling over the working SOC/temperature window remains a qualification target; typical 12.8 mOhm at 50% SOC is not a guaranteed bound.",
    "The drive model applies catalogue torque, power and mechanical-speed ceilings, not a verified efficiency/voltage/thermal map.",
    "The 6700 rpm map uses a 3.08% speed affinity extension of the inherited unmeasured fan map. Installed pressure, flow, efficiency and mechanical response require measurement."
  ],
  "bearing_layout": [
    "One opposed locating pair at 0 and 14 mm per shaft.",
    "Radial supports at -65, 245, 490 and 640 mm permit the specified thermal axial float.",
    "The belt pulley is bracketed by supports.",
    "A 40 K differential over 640 mm requires about 0.28 mm axial float at the assumed 11e-6 / K expansion coefficient."
  ],
  "shaft_diameter_m": 0.02,
  "brake_rotor_inertia_acceptance_ceiling_kgm2": 0.18,
  "shaft_release_source_sha256": "7e79e4eb726f31a989a0a1e743baec1142425669d08da183796943baa9ebc901",
  "shaft_change": "20 mm shafts and 20 x 47 x 14 mm bearing envelopes cover the 150 Nm motor peak with a 25% branch imbalance allowance; the total assembly allowance stays 80 kg."
}