{
  "engine": {
    "name": "Vikram",
    "manufacturer": "Skyroot Aerospace",
    "wikidata": "Q98525422",
    "inception": "2018-06-12",
    "location": "Hyderabad, India"
  },
  "performance": {
    "thrust_vacuum_kn": 180,
    "isp_vacuum_s": 315,
    "propellant_combination": "Liquid Methane / Liquid Oxygen",
    "cycle_type": "Full-flow Staged Combustion",
    "chamber_pressure_bar": 250,
    "exhaust_velocity_ms": 3400
  },
  "thermal_management": {
    "cooling_method": "Regenerative Fuel Channels",
    "wall_temperature_max_k": 1100,
    "fuel_heat_absorption_mj_per_kg": 42,
    "material": "Copper Alloy"
  },
  "comparison": {
    "raptor_thrust_kn": 1870,
    "rator_isp_s": 330,
    "ratio_scale": 0.096
  },
  "local_constraints_minneapolis": {
    "mean_winter_temp_c": -7,
    "lox_boiloff_increase_percent": 23,
    "stage_separation_altitude_km": 120,
    "fairing_drop_location": "Gunflint Trail, Duluth"
  },
  "sources": [
    {
      "label": "Skyroot Official",
      "url": "https://skyroot.in/"
    },
    {
      "label": "Wikidata Q98525422",
      "url": "https://en.wikipedia.org/wiki/Q98525422"
    },
    {
      "label": "NASA SMD-18-1",
      "url": "https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1998-067A"
    },
    {
      "label": "AIAA-2021-3847",
      "url": "https://arc.aiaa.org/doi/10.2514/6.2021-3847"
    }
  ],
  "metadata": {
    "author": "Anthony Figueroa",
    "city": "Minneapolis",
    "role": "Systems Architect",
    "published": "2026-07-18T19:45:00Z",
    "related_works": [
      "/winter-load-sim.html",
      "/orbital-ascension-sim.html"
    ]
  }
}