{
 "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": "parasol-wing",
 "name": "Parasol wing",
 "kind": "standard",
 "category": "Aircraft design",
 "group": "Wing planforms",
 "year": null,
 "question": "What is a parasol wing?",
 "tags": [
  "vehicle design",
  "wing planforms",
  "rc design",
  "aerodynamics"
 ],
 "aliases": [
  "parasol wing",
  "parasol monoplane",
  "parasol wing aircraft",
  "parasol wing rc",
  "pylon mounted wing",
  "cabane struts wing",
  "wing above fuselage",
  "parasol wing flying boat"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/parasol-wing/",
 "sheet_txt": "https://xemstudio.com/objects/parasol-wing/sheet.txt",
 "sheet": {
  "basis": "Design rules and figures from the cited sources; example geometry by Xem Studio",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A parasol wing sits above the fuselage on struts or a pylon. NASM contrasts the Catalina's parasol wing, which needed external bracing, with the Mariner's gull wing that did not (Smithsonian NASM).",
   "Like a high wing it adds stable dihedral effect, so it needs little geometric dihedral (Kitplanes, Wainfan, on high wings).",
   "On flying boats the raised wing keeps engines and props above spray (NASM, PBM entry).",
   "Used on: Consolidated PBY Catalina.",
   "The file is a reference example built by Xem Studio from the numbers above. Sizes the sources do not fix are illustrative; scale the example to your own vehicle."
  ],
  "table": {
   "columns": [
    "parameter",
    "value or range",
    "source"
   ],
   "rows": [
    [
     "Bracing",
     "parasol wing needed external bracing (Catalina)",
     "Smithsonian NASM"
    ],
    [
     "RC with ailerons, high/parasol",
     "about 0-2 deg dihedral",
     "McCombs 1994 (high wing)"
    ],
    [
     "Reference build",
     "1000 x 200 mm, 2 deg",
     "McCombs"
    ]
   ]
  }
 },
 "sheet_text": "Parasol wing — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/parasol-wing/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Design rules and figures from the cited sources; example geometry by Xem Studio\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A parasol wing sits above the fuselage on struts or a pylon. NASM contrasts the Catalina's parasol wing, which needed external bracing, with the Mariner's gull wing that did not (Smithsonian NASM).\n- Like a high wing it adds stable dihedral effect, so it needs little geometric dihedral (Kitplanes, Wainfan, on high wings).\n- On flying boats the raised wing keeps engines and props above spray (NASM, PBM entry).\n- Used on: Consolidated PBY Catalina.\n- The file is a reference example built by Xem Studio from the numbers above. Sizes the sources do not fix are illustrative; scale the example to your own vehicle.\n\nparameter  value or range  source\nBracing  parasol wing needed external bracing (Catalina)  Smithsonian NASM\nRC with ailerons, high/parasol  about 0-2 deg dihedral  McCombs 1994 (high wing)\nReference build  1000 x 200 mm, 2 deg  McCombs\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Smithsonian National Air and Space Museum: Martin PBM-5A Mariner — web — Publisher's page; dimensions are facts — https://si.edu/object/martin-pbm-5a-mariner:nasm_A19730270000\n- Kitplanes (B. Wainfan): Wind Tunnel: Roll's role in lateral stability (2008) — web — Publisher's page; dimensions are facts — https://www.kitplanes.com/wind-tunnel-135/\n- Model Aviation (AMA), W.F. McCombs: Wing and Tail Dihedral for Models (Dec 1994) — web — Publisher's page; dimensions are facts — https://library.modelaviation.com/article/wing-and-tail-dihedral-models\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/parasol-wing/index.json\nAPI: https://xemstudio.com/api/geometry?object=parasol-wing\n",
 "sources": [
  {
   "publisher": "Smithsonian National Air and Space Museum",
   "title": "Martin PBM-5A Mariner",
   "url": "https://si.edu/object/martin-pbm-5a-mariner:nasm_A19730270000",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Kitplanes (B. Wainfan)",
   "title": "Wind Tunnel: Roll's role in lateral stability (2008)",
   "url": "https://www.kitplanes.com/wind-tunnel-135/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Model Aviation (AMA), W.F. McCombs",
   "title": "Wing and Tail Dihedral for Models (Dec 1994)",
   "url": "https://library.modelaviation.com/article/wing-and-tail-dihedral-models",
   "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": [
  "rectangular-wing",
  "tapered-wing",
  "elliptical-wing",
  "swept-wing",
  "forward-swept-wing",
  "delta-wing"
 ],
 "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 a parasol wing stable?",
   "a": "It behaves like a high wing, adding stable dihedral effect (Kitplanes)."
  }
 ],
 "files_license": {
  "name": "Xem Studio Design License",
  "holder": "Xem Studio",
  "url": "https://xemstudio.com/license/",
  "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files."
 },
 "offers": [
  {
   "file": "parasol-wing-wing",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/parasol-wing/parasol-wing-wing.step",
   "stl": "https://xemstudio.com/files/hardware/parasol-wing/parasol-wing-wing.stl",
   "note": "rectangular planform: span 1000, root 200, tip 200 mm, LE sweep 0°, dihedral 2°, NACA 2412"
  }
 ],
 "markdown": "https://xemstudio.com/objects/parasol-wing/index.md"
}