{
 "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": "a-90-orlyonok-ekranoplan",
 "name": "A-90 Orlyonok ekranoplan (Project 904)",
 "kind": "modern",
 "category": "Ground-effect craft",
 "group": "Soviet and Russian ekranoplans (large)",
 "year": null,
 "question": "What are the dimensions of the A-90 Orlyonok?",
 "tags": [
  "ekranoplan",
  "wing in ground effect",
  "wig craft",
  "ground effect vehicle",
  "soviet and russian ekranoplans (large)"
 ],
 "aliases": [
  "orlyonok dimensions",
  "a-90 orlyonok wingspan",
  "orlyonok ekranoplan length",
  "project 904 ekranoplan specs",
  "orlyonok height",
  "a-90 ekranoplan size",
  "orlyonok weight",
  "орлёнок экраноплан размеры",
  "orlyonok dimensiones",
  "Orljonok Abmessungen",
  "orlyonok dimensões"
 ],
 "overall_mm": {
  "length": 58100,
  "width": 31500,
  "height": 16300
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/a-90-orlyonok-ekranoplan/",
 "sheet_txt": "https://xemstudio.com/objects/a-90-orlyonok-ekranoplan/sheet.txt",
 "sheet": {
  "basis": "Secondary source: Wikipedia, GlobalSecurity.org (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 58100,
   "width": 31500,
   "height": 16300
  },
  "notes": [
   "The Orlyonok is the Alexeyev bureau's turboprop-cruise assault-transport ekranoplan, first flown in 1972; one survives at the Moscow Navy museum.",
   "The file is a 58.1 × 31.5 × 16.3 m box from Wikipedia (sourced to Komissarov). A Russian-language source quotes a 600 m² wing area instead of 304 m², so wing area is uncertain.",
   "Marked secondary: figures are from encyclopedic sources, not a factory document.",
   "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",
     "58.1 m"
    ],
    [
     "Wingspan",
     "31.5 m"
    ],
    [
     "Height",
     "16.3 m"
    ],
    [
     "Wing area",
     "304 m²"
    ],
    [
     "Maximum take-off weight",
     "140,000 kg"
    ],
    [
     "Capacity",
     "150 troops or 28,000 kg cargo"
    ],
    [
     "Cruise engine",
     "1 × Kuznetsov NK-12MK turboprop, 11,033 kW (14,795 shp), at the fin/tailplane junction, 8-blade contra-rotating propeller"
    ],
    [
     "Boost engines",
     "2 × Kuznetsov NK-8-4K turbofans, 103 kN each, in the nose"
    ],
    [
     "Maximum speed",
     "400 km/h"
    ],
    [
     "Range",
     "1,500 km"
    ],
    [
     "Service ceiling",
     "3,000 m"
    ],
    [
     "Ground-effect flying height",
     "5–10 m above the surface (GlobalSecurity)"
    ],
    [
     "Crew",
     "6"
    ],
    [
     "Number built",
     "4 (one static-test airframe)"
    ]
   ]
  }
 },
 "sheet_text": "A-90 Orlyonok ekranoplan (Project 904) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/a-90-orlyonok-ekranoplan/  (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 58100, width 31500, height 16300\n- The Orlyonok is the Alexeyev bureau's turboprop-cruise assault-transport ekranoplan, first flown in 1972; one survives at the Moscow Navy museum.\n- The file is a 58.1 × 31.5 × 16.3 m box from Wikipedia (sourced to Komissarov). A Russian-language source quotes a 600 m² wing area instead of 304 m², so wing area is uncertain.\n- Marked secondary: figures are from encyclopedic sources, not a factory document.\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  58.1 m\nWingspan  31.5 m\nHeight  16.3 m\nWing area  304 m²\nMaximum take-off weight  140,000 kg\nCapacity  150 troops or 28,000 kg cargo\nCruise engine  1 × Kuznetsov NK-12MK turboprop, 11,033 kW (14,795 shp), at the fin/tailplane junction, 8-blade contra-rotating propeller\nBoost engines  2 × Kuznetsov NK-8-4K turbofans, 103 kN each, in the nose\nMaximum speed  400 km/h\nRange  1,500 km\nService ceiling  3,000 m\nGround-effect flying height  5–10 m above the surface (GlobalSecurity)\nCrew  6\nNumber built  4 (one static-test airframe)\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: A-90 Orlyonok — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/A-90_Orlyonok\n- GlobalSecurity.org: Project 904 Orlan class / A-90 Orlyonok — web — Publisher's page; dimensions are facts — https://www.globalsecurity.org/military/world/russia/904.htm\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/a-90-orlyonok-ekranoplan/index.json\nAPI: https://xemstudio.com/api/geometry?object=a-90-orlyonok-ekranoplan\n",
 "sources": [
  {
   "publisher": "Wikipedia",
   "title": "A-90 Orlyonok",
   "url": "https://en.wikipedia.org/wiki/A-90_Orlyonok",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "GlobalSecurity.org",
   "title": "Project 904 Orlan class / A-90 Orlyonok",
   "url": "https://www.globalsecurity.org/military/world/russia/904.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": [
  "alexeyev-km-caspian-sea-monster",
  "lun-class-ekranoplan-md-160"
 ],
 "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 is the A-90 Orlyonok?",
   "a": "58.1 m long with a 31.5 m wingspan and 16.3 m height."
  },
  {
   "q": "What powers the Orlyonok?",
   "a": "One NK-12MK turboprop on the tail for cruise and two NK-8-4K turbofans in the nose for take-off boost."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "a-90-orlyonok-ekranoplan-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/a-90-orlyonok-ekranoplan/a-90-orlyonok-ekranoplan-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/a-90-orlyonok-ekranoplan/a-90-orlyonok-ekranoplan-envelope.stl",
   "note": "Envelope 58100 × 31500 × 16300 mm (Real craft: overall length × wingspan × overall height as published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/a-90-orlyonok-ekranoplan/index.md"
}