{
 "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": "ivolga-el-7-ekranolet",
 "name": "Ivolga EL-7 ekranolet (Kolganov prototype)",
 "kind": "modern",
 "category": "Ground-effect craft",
 "group": "Russian light civil ekranoplans",
 "year": null,
 "question": "What are the dimensions of the Ivolga EL-7 ekranolet?",
 "tags": [
  "ekranoplan",
  "wing in ground effect",
  "wig craft",
  "ground effect vehicle",
  "russian light civil ekranoplans"
 ],
 "aliases": [
  "ivolga ekranolet dimensions",
  "иволга экранолёт размеры",
  "el-7 ekranolet",
  "ivolga ek-12 size",
  "kolganov ekranoplan",
  "ivolga wingspan",
  "иволга эл-7",
  "ivolga ekranolet length"
 ],
 "overall_mm": {
  "length": 16000,
  "width": 12700,
  "height": 4000
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/ivolga-el-7-ekranolet/",
 "sheet_txt": "https://xemstudio.com/objects/ivolga-el-7-ekranolet/sheet.txt",
 "sheet": {
  "basis": "Secondary source: Bibimot (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 16000,
   "width": 12700,
   "height": 4000
  },
  "notes": [
   "The EL-7 is the earlier ekranolet prototype from V. Kolganov's team that led to the Ivolga EK-12.",
   "The file is a 16 × 12.7 × 4 m box. The EK-12's own length and span are not published in the sources found, so it is not modelled.",
   "Marked secondary (Russian popular-tech site).",
   "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",
     "16 m"
    ],
    [
     "Wingspan",
     "12.7 m"
    ],
    [
     "Height",
     "4 m"
    ],
    [
     "Maximum take-off weight",
     "3.3 t"
    ],
    [
     "Cruise speed",
     "175 km/h"
    ],
    [
     "Maximum speed",
     "220 km/h"
    ],
    [
     "Flying height",
     "up to 30 m"
    ],
    [
     "Range",
     "1,500 km"
    ],
    [
     "Passengers",
     "up to 11"
    ]
   ]
  }
 },
 "sheet_text": "Ivolga EL-7 ekranolet (Kolganov prototype) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/ivolga-el-7-ekranolet/  (sheet CC BY 4.0)\nBasis: Secondary source: Bibimot (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 16000, width 12700, height 4000\n- The EL-7 is the earlier ekranolet prototype from V. Kolganov's team that led to the Ivolga EK-12.\n- The file is a 16 × 12.7 × 4 m box. The EK-12's own length and span are not published in the sources found, so it is not modelled.\n- Marked secondary (Russian popular-tech site).\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  16 m\nWingspan  12.7 m\nHeight  4 m\nMaximum take-off weight  3.3 t\nCruise speed  175 km/h\nMaximum speed  220 km/h\nFlying height  up to 30 m\nRange  1,500 km\nPassengers  up to 11\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Bibimot: Экранолёт «Иволга»: проект удался? — web — Publisher's page; dimensions are facts — https://en.bibimot.ru/5172-jekranolet-ivolga-proekt-udalsja.html\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/ivolga-el-7-ekranolet/index.json\nAPI: https://xemstudio.com/api/geometry?object=ivolga-el-7-ekranolet\n",
 "sources": [
  {
   "publisher": "Bibimot",
   "title": "Экранолёт «Иволга»: проект удался?",
   "url": "https://en.bibimot.ru/5172-jekranolet-ivolga-proekt-udalsja.html",
   "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": [
  "aquaglide-5-ekranoplan",
  "aquaglide-30-ekranoplan"
 ],
 "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": "Is this the EK-12?",
   "a": "No. These figures are for the earlier EL-7 prototype; EK-12 dimensions are not published in the sources found."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "ivolga-el-7-ekranolet-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/ivolga-el-7-ekranolet/ivolga-el-7-ekranolet-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/ivolga-el-7-ekranolet/ivolga-el-7-ekranolet-envelope.stl",
   "note": "Envelope 16000 × 12700 × 4000 mm (Real craft: overall length × wingspan × overall height as published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/ivolga-el-7-ekranolet/index.md"
}