revision: 1
date: 2026-10-10
status: conceptual_scenarios_not_design_validation
constants:
  water_density_kg_m3: 1025
  air_density_kg_m3: 1.225
  gravity_m_s2: 9.81
  seawater_kinematic_viscosity_m2_s: 0.00000119
  knot_m_s: 0.5144444444444445
geometry:
  model: models/ECONA/ECONA_ECONA.FCStd
  source_sha256: 7ae0c6e91c30dc92f1f46d84660eb2e1f431d6f56efa7243a7c15a9a608791ef
  roof_detection: union of Superstructure triangles with abs(normal_z)>0.85 and centroid_z>2.2 m
  waterline_length_for_resistance_m: 12.8
  waterline_length_sensitivity_m: [11.5, 13.2]
  resistance_wetted_area_reference_m2: 45
  wetted_area_is_cad_measurement: false
hydro_surrogate:
  shape: two closed ellipsoids, not reconstructed ECONA hulls
  length_m: 13.6
  maximum_width_each_m: 1.3
  total_height_m: 2.2
  hull_center_spacing_m: 6.1
  zero_z: surrogate keel, not original CAD datum
resistance_scenarios:
  - {name: low, label: Низкое сопротивление, wetted_area_m2: 35, total_to_friction_ratio: 1.6, total_dc_to_effective_efficiency: 0.62}
  - {name: central, label: Опорный сценарий, wetted_area_m2: 45, total_to_friction_ratio: 2.5, total_dc_to_effective_efficiency: 0.55}
  - {name: high, label: Высокое сопротивление, wetted_area_m2: 55, total_to_friction_ratio: 4.0, total_dc_to_effective_efficiency: 0.42}
  # Ratios include unknown residual, hull interaction, appendage and air effects.
  # They are sensitivity parameters, not ITTC correlations or CFD results.
pv:
  efficiency_stc: 0.22
  usable_roof_fractions: [0.70, 0.80, 0.85]
  daily_irradiation_kwh_m2: [0.8, 2, 4, 6]
  total_performance_ratio: 0.75
  reference_cell_temperature_C: 45
  power_temperature_coefficient_K_inv: -0.0035
  synthetic_weather_irradiation_sequence: [4, 4, 0.8, 0.8, 0.8, 4, 4]
  real_route_weather: null
battery:
  nominal_capacities_kwh: [20, 40, 60]
  minimum_soc: 0.10
  maximum_soc: 0.90
  discharge_efficiency: 0.96
  charge_efficiency: 0.96
  protected_bus_energy_kwh: 8
  protected_energy_reason: 4.8 kWh for 48h critical 100W load plus 3.2 kWh maneuver budget; unapproved target
  whole_bank_energy_density_wh_kg: 115
  whole_bank_energy_density_range_wh_kg: [100, 140]
hotel:
  daily_scenarios_kwh: [4, 6, 10]
  central_daily_kwh: 6
  critical_average_W: 100
  daily_budget_kwh:
    navigation_communications: 0.8
    hull_autopilot: 0.5
    kite_control_and_winches: 0.7
    refrigeration: 1.2
    water_pumps: 0.2
    lighting: 0.2
    computers_and_devices: 0.6
    watermaker: 0.8
    limited_electric_cooking: 1.0
  heating_and_air_conditioning_included: false
kite:
  areas_m2: [25, 40, 60]
  wing_relative_speeds_m_s: [8, 12, 16]
  aerodynamic_resultant_coefficient: 1.1
  coefficient_is_measured: false
  elevation_deg: 35
  azimuth_deg: 25
  tether_length_example_m: 200
  force_case_N: 10000
  load_cases_N: [10000, 20000, 30000]
  attachment_relative_to_cg_m: [4, 0, 1]
propulsion:
  example_total_dc_power_kw: [10, 20, 30, 40]
  nominal_bus_voltages_V: [51.2, 102.4]
  example_each_motor_shaft_kw: [10, 15, 20]
  example_rpm: [900, 1500]
  motor_efficiency: 0.92
  propeller_diameter_m: 0.45
  cable_loop_length_m: 20
  cable_copper_resistivity_ohm_mm2_m: 0.0175
  cable_sections_mm2: [70, 120]
  components_selected: false
water:
  consumption_l_person_day: 15
  stored_l_example: 400
  watermaker_specific_wh_l: 12
mass:
  # Allocation for comparison, not weights measured from a constructed vessel.
  hull_bridge_kg: 3200
  interiors_kg: 850
  conventional_ship_systems_kg: 450
  kite_launch_system_kg: 250
  propulsion_kg: 200
  power_distribution_kg: 150
  pv_installed_kg_m2: 10
  dry_mass_contingency_fraction: 0.15
  person_with_immediate_gear_kg: 90
  base_food_kg_person_day: 1
  provisions_days: 30
  cases:
    - {name: lean, label: Облегчённый, people: 4, battery_kwh: 20, roof_fraction: 0.70, water_kg: 300, spare_kg: 150, baggage_kg: 100}
    - {name: central, label: Опорный, people: 4, battery_kwh: 40, roof_fraction: 0.80, water_kg: 400, spare_kg: 250, baggage_kg: 120}
    - {name: extended, label: Восемь человек, people: 8, battery_kwh: 60, roof_fraction: 0.85, water_kg: 600, spare_kg: 350, baggage_kg: 240}
structure:
  glass_laminate_density_kg_m3: 1850
  glass_face_thickness_example_m: 0.0012
  core_thickness_example_m: 0.020
  core_density_example_kg_m3: 80
  extra_bonding_finish_kg_m2: 0.6
  face_modulus_example_Pa: 20000000000
  core_shear_modulus_example_Pa: 25000000
  strip_spans_m: [0.3, 0.5, 0.7]
  trial_uniform_pressures_kpa: [10, 30, 50]
  pressure_and_layup_are_normatively_approved: false