{
  "type": "product",
  "id": "hirth-engines-f-23",
  "url": "https://www.nomyparts.com/companies/hirth-engines/products/f-23/",
  "name": "F-23",
  "fullName": "F-23 aircraft combustion engine",
  "manufacturer": {
    "id": "hirth-engines",
    "name": "Hirth Engines",
    "url": "https://www.nomyparts.com/companies/hirth-engines/"
  },
  "category": {
    "id": "propulsion",
    "name": "Propulsion"
  },
  "subcategory": {
    "id": "combustion-engines",
    "name": "Combustion engines"
  },
  "description": "F-23 is an aircraft combustion engine that produces mechanical power or thrust by burning fuel. Published mass is 22 kg. It forms the propulsion source for an aircraft installation, with fuel delivery and thermal management defined by the selected configuration.",
  "manufacturerPage": "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf",
  "certifications": [],
  "specifications": [
    {
      "id": "grade",
      "name": "Grade",
      "sources": [],
      "verified": null,
      "value": "Professional"
    },
    {
      "id": "market",
      "name": "Market",
      "sources": [],
      "verified": null,
      "value": "Civil"
    },
    {
      "id": "platform-class",
      "name": "Platform class",
      "sources": [],
      "verified": null,
      "value": [
        "Large UAS (25–150 kg)",
        "Manned aircraft"
      ]
    },
    {
      "id": "airframe",
      "name": "Airframe",
      "sources": [],
      "verified": null,
      "value": [
        "Fixed-wing"
      ]
    },
    {
      "id": "availability",
      "name": "Availability",
      "sources": [],
      "verified": null,
      "value": "In production"
    },
    {
      "id": "mass",
      "name": "Mass",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": 22,
      "unit": "kg"
    },
    {
      "id": "dimensions",
      "name": "Dimensions (L × W × H, mm)",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": "286 x 570 x 338 mm (L x W x H)"
    },
    {
      "id": "max-power",
      "name": "Max power",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": 36.7,
      "unit": "kW",
      "si": {
        "value": 36700,
        "unit": "W"
      }
    },
    {
      "id": "engine-type",
      "name": "Engine type",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": "2-stroke"
    },
    {
      "id": "displacement",
      "name": "Displacement",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": 521,
      "unit": "cc",
      "si": {
        "value": 0.000521,
        "unit": "m³"
      }
    },
    {
      "id": "fuel-type",
      "name": "Fuel type",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Gasoline"
    },
    {
      "id": "cylinders-rotors",
      "name": "Cylinders / rotors",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Two cylinders; boxer configuration."
    },
    {
      "id": "fuel-system",
      "name": "Fuel system",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Mikuni slide carburetor; fuel/oil premix, with minimum 95 RON gasoline."
    },
    {
      "id": "generator-output",
      "name": "Generator output",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": 250,
      "unit": "W"
    },
    {
      "id": "starter",
      "name": "Starter",
      "sources": [
        "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Recoil starter; electric starter is an optional accessory."
    }
  ],
  "sources": [
    {
      "url": "https://old.hirthengines.com/media/F23-brochure-soft-copy-1.pdf",
      "checked": "2026-10-25"
    }
  ],
  "updated": "2026-11-04",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "licenseName": "CC BY 4.0",
  "attribution": "Source: NomyParts, https://www.nomyparts.com/companies/hirth-engines/products/f-23/"
}