{
  "schema": "project33.c4.mass_summary/1",
  "generator": "materials/mass_rollup.py",
  "inputs": "materials/parts.yaml",
  "units": {
    "mass": "kg",
    "volume": "cm^3",
    "density": "kg/m^3"
  },
  "densities": {
    "PLA": 1240,
    "PETG": 1270,
    "7075-T6": 2810,
    "CFRP_quasi_iso": 1550,
    "Ti-6Al-4V": 4430
  },
  "parts_included": [
    "Body Tube",
    "Nose Cone",
    "Fin (x4)",
    "Hinge Pin (x4)"
  ],
  "baseline_total_kg": 0.098114,
  "candidate_total_kg": 0.062798,
  "reduction_fraction": 0.359949,
  "not_included": [
    "electronics",
    "servos",
    "fasteners and adhesives",
    "motor",
    "wiring and battery",
    "manufacturing variation"
  ],
  "basis": "calculated from authored volumes and handbook densities; no part was weighed"
}