{
  "source": "https://stellaraero.us/",
  "updated": "2026-11",
  "apogee": "100 km minimum, ~150 km goal",
  "launch_window": "late 2027",
  "name": "The Guinea Pig",
  "program_stage": "Phase 1 suborbital test vehicle",
  "height_m": 8.35,
  "diameter_m": 0.3048,
  "propellant": "RP-1 / LOX",
  "wet_mass_kg": 600,
  "dry_mass_kg": 300,
  "target_velocity_kmh": 4961,
  "target_specific_impulse_s": 265,
  "vacuum_isp_s": 299.8,
  "target_burn_time_s": 30.0,
  "target_thrust_n": 23670,
  "chamber_pressure_bar": 40.4,
  "target_total_impulse_ns": 781930,
  "target_peak_mass_flow_kg_s": 10,
  "sim_apogee_km": 112.9,
  "sim_apogee_range_km": [
    103.0,
    124.2
  ],
  "max_mach": 4.67,
  "max_accel_g": 8.2,
  "sim_source": "rocket_BEST_MODEL_YET.py, Nov 2026"
}