{
 "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": "boeing-pelican-ultra",
 "name": "Boeing Pelican ULTRA ground-effect transport (concept)",
 "kind": "modern",
 "category": "Ground-effect craft",
 "group": "Concept wingships (unbuilt)",
 "year": null,
 "question": "What are the dimensions of the Boeing Pelican?",
 "tags": [
  "ekranoplan",
  "wing in ground effect",
  "wig craft",
  "ground effect vehicle",
  "concept wingships (unbuilt)"
 ],
 "aliases": [
  "boeing pelican dimensions",
  "boeing pelican wingspan",
  "pelican ultra length",
  "boeing ground effect plane",
  "largest planned aircraft",
  "boeing pelican size",
  "boeing pelican envergadura",
  "Boeing Pelican Spannweite"
 ],
 "overall_mm": {
  "length": 122000,
  "width": 152400,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/boeing-pelican-ultra/",
 "sheet_txt": "https://xemstudio.com/objects/boeing-pelican-ultra/sheet.txt",
 "sheet": {
  "basis": "Secondary source: Wikipedia, GlobalSecurity.org (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 122000,
   "width": 152400,
   "height": null
  },
  "notes": [
   "The Pelican was Boeing Phantom Works' 2002 study for an ultra-large cargo aircraft that would cruise in ground effect over water.",
   "Only a 122 × 152.4 m plan-view envelope is modelled because overall height is not published. Figures are from magazine sources via Wikipedia.",
   "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",
     "400 ft 3 in (122 m)"
    ],
    [
     "Wingspan unfolded",
     "500 ft (152.4 m)"
    ],
    [
     "Wingspan folded",
     "340 ft (published as 100 m)"
    ],
    [
     "Effective span in ground effect",
     "850 ft (260 m)"
    ],
    [
     "Main-deck interior height",
     "18.3 ft (5.6 m)"
    ],
    [
     "Overall height",
     "not published"
    ],
    [
     "Wing area",
     "44,000 sq ft (4,100 m²) or more"
    ],
    [
     "Empty weight",
     "2,160,000 lb (979,760 kg)"
    ],
    [
     "Maximum take-off weight",
     "6,000,000 lb (2,721,554 kg)"
    ],
    [
     "Engines",
     "8 turboprops (published as 80,000 shp each)"
    ],
    [
     "Cruise height in ground effect",
     "20–50 ft (6.1–15.2 m)"
    ],
    [
     "Payload",
     "2,800,000 lb (1,270 t)"
    ]
   ]
  }
 },
 "sheet_text": "Boeing Pelican ULTRA ground-effect transport (concept) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/boeing-pelican-ultra/  (sheet CC BY 4.0)\nBasis: Secondary source: Wikipedia, GlobalSecurity.org (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 122000, width 152400.0\n- The Pelican was Boeing Phantom Works' 2002 study for an ultra-large cargo aircraft that would cruise in ground effect over water.\n- Only a 122 × 152.4 m plan-view envelope is modelled because overall height is not published. Figures are from magazine sources via Wikipedia.\n- 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  400 ft 3 in (122 m)\nWingspan unfolded  500 ft (152.4 m)\nWingspan folded  340 ft (published as 100 m)\nEffective span in ground effect  850 ft (260 m)\nMain-deck interior height  18.3 ft (5.6 m)\nOverall height  not published\nWing area  44,000 sq ft (4,100 m²) or more\nEmpty weight  2,160,000 lb (979,760 kg)\nMaximum take-off weight  6,000,000 lb (2,721,554 kg)\nEngines  8 turboprops (published as 80,000 shp each)\nCruise height in ground effect  20–50 ft (6.1–15.2 m)\nPayload  2,800,000 lb (1,270 t)\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: Boeing Pelican — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/Boeing_Pelican\n- GlobalSecurity.org: Pelican ULTRA — web — Publisher's page; dimensions are facts — https://www.globalsecurity.org/military/systems/aircraft/ultra.htm\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/boeing-pelican-ultra/index.json\nAPI: https://xemstudio.com/api/geometry?object=boeing-pelican-ultra\n",
 "sources": [
  {
   "publisher": "Wikipedia",
   "title": "Boeing Pelican",
   "url": "https://en.wikipedia.org/wiki/Boeing_Pelican",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "GlobalSecurity.org",
   "title": "Pelican ULTRA",
   "url": "https://www.globalsecurity.org/military/systems/aircraft/ultra.htm",
   "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": [
  "beriev-be-2500-neptun",
  "aerocon-dash-1-6-wingship"
 ],
 "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": "How big was the Boeing Pelican?",
   "a": "About 122 m long with a 500 ft (152.4 m) unfolded wingspan."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "boeing-pelican-ultra-plan-outline",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/boeing-pelican-ultra/boeing-pelican-ultra-plan-outline.step",
   "stl": "https://xemstudio.com/files/hardware/boeing-pelican-ultra/boeing-pelican-ultra-plan-outline.stl",
   "note": "Plan outline 122000 × 152400 mm, 1 mm reference thickness (height not published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/boeing-pelican-ultra/index.md"
}