{
 "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": "grunin-eska-1-ekranoplan",
 "name": "Grunin ESKA-1 experimental ekranoplan (2-seat)",
 "kind": "modern",
 "category": "Ground-effect craft",
 "group": "Soviet experimental and scale prototypes",
 "year": null,
 "question": "What are the dimensions of the ESKA-1 ekranoplan?",
 "tags": [
  "ekranoplan",
  "wing in ground effect",
  "wig craft",
  "ground effect vehicle",
  "soviet experimental and scale prototypes"
 ],
 "aliases": [
  "eska-1 ekranoplan dimensions",
  "eska-1 wingspan",
  "grunin eska-1",
  "эска-1 экраноплан",
  "small ekranoplan dimensions",
  "two seat ekranoplan size",
  "eska-1 specs",
  "eska 1 medidas"
 ],
 "overall_mm": {
  "length": 7800,
  "width": 6900,
  "height": 2200
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/grunin-eska-1-ekranoplan/",
 "sheet_txt": "https://xemstudio.com/objects/grunin-eska-1-ekranoplan/sheet.txt",
 "sheet": {
  "basis": "Secondary source: Hassan Hameed (copy of en.topwar.ru article), The Maldives National Journal of Research (H. Hameed, 2019) (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 7800,
   "width": 6900,
   "height": 2200
  },
  "notes": [
   "ESKA-1 is E. P. Grunin's small Lippisch-type experimental ekranoplan from the Soviet amateur/institute scene of the 1970s.",
   "The file is a 7.80 × 6.90 × 2.20 m box from a performance table reproduced from a Topwar article (also tabulated in Hameed 2019).",
   "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",
     "7.80 m"
    ],
    [
     "Wingspan",
     "6.90 m"
    ],
    [
     "Height",
     "2.20 m"
    ],
    [
     "Wing area",
     "13.85 m²"
    ],
    [
     "Empty weight",
     "234 kg"
    ],
    [
     "Flight weight",
     "450 kg"
    ],
    [
     "Engine",
     "M-63 piston, 32 hp (24 kW)"
    ],
    [
     "Maximum speed",
     "140 km/h"
    ],
    [
     "Cruise speed",
     "100 km/h"
    ],
    [
     "Range",
     "350 km"
    ],
    [
     "Ground-effect flying height",
     "300–1500 mm"
    ],
    [
     "Crew",
     "2"
    ]
   ]
  }
 },
 "sheet_text": "Grunin ESKA-1 experimental ekranoplan (2-seat) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/grunin-eska-1-ekranoplan/  (sheet CC BY 4.0)\nBasis: Secondary source: Hassan Hameed (copy of en.topwar.ru article), The Maldives National Journal of Research (H. Hameed, 2019) (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 7800, width 6900, height 2200\n- ESKA-1 is E. P. Grunin's small Lippisch-type experimental ekranoplan from the Soviet amateur/institute scene of the 1970s.\n- The file is a 7.80 × 6.90 × 2.20 m box from a performance table reproduced from a Topwar article (also tabulated in Hameed 2019).\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  7.80 m\nWingspan  6.90 m\nHeight  2.20 m\nWing area  13.85 m²\nEmpty weight  234 kg\nFlight weight  450 kg\nEngine  M-63 piston, 32 hp (24 kW)\nMaximum speed  140 km/h\nCruise speed  100 km/h\nRange  350 km\nGround-effect flying height  300–1500 mm\nCrew  2\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Hassan Hameed (copy of en.topwar.ru article): Experimental ekranoplan ESKA-1 — web — Publisher's page; dimensions are facts — https://www.hassanhameed.com/wp-content/uploads/2023/05/Experimental-ekranoplan-ESKA-1.pdf\n- The Maldives National Journal of Research (H. Hameed, 2019): The design of a four-seat reverse delta WIG craft, Table 5 — web — Publisher's page; dimensions are facts — https://mnjr.mnu.edu.mv/journal/article/download/97/66\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/grunin-eska-1-ekranoplan/index.json\nAPI: https://xemstudio.com/api/geometry?object=grunin-eska-1-ekranoplan\n",
 "sources": [
  {
   "publisher": "Hassan Hameed (copy of en.topwar.ru article)",
   "title": "Experimental ekranoplan ESKA-1",
   "url": "https://www.hassanhameed.com/wp-content/uploads/2023/05/Experimental-ekranoplan-ESKA-1.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "The Maldives National Journal of Research (H. Hameed, 2019)",
   "title": "The design of a four-seat reverse delta WIG craft, Table 5",
   "url": "https://mnjr.mnu.edu.mv/journal/article/download/97/66",
   "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-sm-5-ekranoplan",
  "alexeyev-sm-8-ekranoplan",
  "bartini-beriev-vva-14"
 ],
 "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 high does the ESKA-1 fly?",
   "a": "300–1500 mm above the surface in ground effect."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "grunin-eska-1-ekranoplan-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/grunin-eska-1-ekranoplan/grunin-eska-1-ekranoplan-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/grunin-eska-1-ekranoplan/grunin-eska-1-ekranoplan-envelope.stl",
   "note": "Envelope 7800 × 6900 × 2200 mm (Real craft: overall length × wingspan × overall height as published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/grunin-eska-1-ekranoplan/index.md"
}