{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "collins-x-112-aerofoil-boat",
 "name": "Collins X-112 aerofoil boat (Lippisch, 1963)",
 "kind": "modern",
 "category": "Ground-effect craft",
 "group": "Lippisch reverse-delta craft",
 "year": null,
 "question": "What are the dimensions of the Collins X-112?",
 "tags": [
  "ekranoplan",
  "wing in ground effect",
  "wig craft",
  "ground effect vehicle",
  "lippisch reverse-delta craft"
 ],
 "aliases": [
  "x-112 aerofoil boat dimensions",
  "collins x-112 wingspan",
  "lippisch x-112",
  "lippisch reverse delta wing size",
  "x-112 length",
  "aerofoil boat specs",
  "lippisch x-112 medidas",
  "Lippisch Aerofoil Boot Abmessungen"
 ],
 "overall_mm": {
  "length": 7620,
  "width": 4270,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/collins-x-112-aerofoil-boat/",
 "sheet_txt": "https://xemstudio.com/objects/collins-x-112-aerofoil-boat/sheet.txt",
 "sheet": {
  "basis": "Secondary source: Wikipedia (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 7620,
   "width": 4270,
   "height": null
  },
  "notes": [
   "The X-112 was Alexander Lippisch's first reverse-delta 'Aerofoil Boat', built at Collins Radio and described in Lippisch's US patent 3,190,582.",
   "Height is not published, so the file models only a 7.62 × 4.27 m plan-view envelope (data from Jane's All the World's Aircraft 1964–65 via Wikipedia).",
   "The patent text was not readable in this research pass, so no patent geometry is recorded. Marked secondary.",
   "True size, no printing tolerance added. Only published numbers are used; anything not published is said so.",
   "Secondary source: the numbers come from a retailer or magazine copy of the maker's specification."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "Length",
     "25 ft 0 in (7.62 m)"
    ],
    [
     "Wingspan",
     "14 ft 0 in (4.27 m)"
    ],
    [
     "Height",
     "not published"
    ],
    [
     "Wing area",
     "110 sq ft (10 m²)"
    ],
    [
     "Empty weight",
     "370 lb (168 kg)"
    ],
    [
     "Gross weight",
     "710 lb (322 kg)"
    ],
    [
     "Engine",
     "1 × 25 hp (19 kW), tractor, fixed-pitch propeller"
    ],
    [
     "Maximum speed",
     "77 mph (124 km/h) in free flight"
    ],
    [
     "Take-off speed",
     "35–38 mph (55–61 km/h)"
    ],
    [
     "Planform",
     "reverse (inverse) delta: straight unswept leading edge"
    ],
    [
     "First flight",
     "1963"
    ]
   ]
  }
 },
 "sheet_text": "Collins X-112 aerofoil boat (Lippisch, 1963) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/collins-x-112-aerofoil-boat/  (sheet CC BY 4.0)\nBasis: Secondary source: Wikipedia (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 7620, width 4270\n- The X-112 was Alexander Lippisch's first reverse-delta 'Aerofoil Boat', built at Collins Radio and described in Lippisch's US patent 3,190,582.\n- Height is not published, so the file models only a 7.62 × 4.27 m plan-view envelope (data from Jane's All the World's Aircraft 1964–65 via Wikipedia).\n- The patent text was not readable in this research pass, so no patent geometry is recorded. Marked secondary.\n- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.\n- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.\n\ndimension  value\nLength  25 ft 0 in (7.62 m)\nWingspan  14 ft 0 in (4.27 m)\nHeight  not published\nWing area  110 sq ft (10 m²)\nEmpty weight  370 lb (168 kg)\nGross weight  710 lb (322 kg)\nEngine  1 × 25 hp (19 kW), tractor, fixed-pitch propeller\nMaximum speed  77 mph (124 km/h) in free flight\nTake-off speed  35–38 mph (55–61 km/h)\nPlanform  reverse (inverse) delta: straight unswept leading edge\nFirst flight  1963\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: Collins X-112 (after Jane's All the World's Aircraft 1964–65) — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/Collins_X-112\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/collins-x-112-aerofoil-boat/index.json\nAPI: https://xemstudio.com/api/geometry?object=collins-x-112-aerofoil-boat\n",
 "sources": [
  {
   "publisher": "Wikipedia",
   "title": "Collins X-112 (after Jane's All the World's Aircraft 1964–65)",
   "url": "https://en.wikipedia.org/wiki/Collins_X-112",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "rfb-x-113-am",
  "rfb-x-114"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "What wing shape does the X-112 use?",
   "a": "A reverse (inverse) delta: triangular in plan with a straight, unswept leading edge."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "collins-x-112-aerofoil-boat-plan-outline",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/collins-x-112-aerofoil-boat/collins-x-112-aerofoil-boat-plan-outline.step",
   "stl": "https://xemstudio.com/files/hardware/collins-x-112-aerofoil-boat/collins-x-112-aerofoil-boat-plan-outline.stl",
   "note": "Plan outline 7620 × 4270 mm, 1 mm reference thickness (height not published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/collins-x-112-aerofoil-boat/index.md"
}