{
 "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": "frise-aileron",
 "name": "Frise aileron",
 "kind": "standard",
 "category": "Aircraft design",
 "group": "Control surfaces",
 "year": null,
 "question": "What is a Frise aileron?",
 "tags": [
  "vehicle design",
  "control surfaces",
  "rc design",
  "aerodynamics"
 ],
 "aliases": [
  "frise aileron",
  "frise ailerons",
  "offset hinge aileron",
  "frise aileron vs differential",
  "adverse yaw aileron",
  "cessna aileron type",
  "frise aileron rc",
  "aileron nose drag"
 ],
 "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/frise-aileron/",
 "sheet_txt": "https://xemstudio.com/objects/frise-aileron/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 Frise aileron pivots on an offset hinge so the up-going aileron's nose projects below the wing, adding drag on that side to offset adverse yaw; it also forms a slot that improves flow over the lowered aileron at high AoA (FAA PHAK ch.6).",
   "Coordinated rudder is still needed (FAA). Sadraey notes the hinge line is higher than usual and that Cessna aircraft generally use Frise ailerons (ch.12).",
   "Used on: Cessna aircraft (generally).",
   "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": [
    [
     "Hinge",
     "offset, above the usual location",
     "FAA PHAK ch.6; Sadraey ch.12"
    ],
    [
     "Usage",
     "Cessna aircraft generally",
     "Sadraey ch.12"
    ],
    [
     "Reference build",
     "chord 200, 20% aileron, 20 deg up",
     "illustrative"
    ]
   ]
  }
 },
 "sheet_text": "Frise aileron — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/frise-aileron/  (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 Frise aileron pivots on an offset hinge so the up-going aileron's nose projects below the wing, adding drag on that side to offset adverse yaw; it also forms a slot that improves flow over the lowered aileron at high AoA (FAA PHAK ch.6).\n- Coordinated rudder is still needed (FAA). Sadraey notes the hinge line is higher than usual and that Cessna aircraft generally use Frise ailerons (ch.12).\n- Used on: Cessna aircraft (generally).\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\nHinge  offset, above the usual location  FAA PHAK ch.6; Sadraey ch.12\nUsage  Cessna aircraft generally  Sadraey ch.12\nReference build  chord 200, 20% aileron, 20 deg up  illustrative\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- FAA: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Ch. 6 Flight Controls — web — Publisher's page; dimensions are facts — https://www.faa.gov/sites/faa.gov/files/08_phak_ch6.pdf\n- Universidad de Sevilla course files (Sadraey, Aircraft Design, Ch. 12): Design of Control Surfaces (Aileron) — web — Publisher's page; dimensions are facts — https://aero.us.es/adesign/Slides/Extra/Stability/Design_Control_Surface/Chapter%2012.%20Desig%20of%20Control%20Surfaces%20%28Aileron%29.pdf\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/frise-aileron/index.json\nAPI: https://xemstudio.com/api/geometry?object=frise-aileron\n",
 "sources": [
  {
   "publisher": "FAA",
   "title": "Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Ch. 6 Flight Controls",
   "url": "https://www.faa.gov/sites/faa.gov/files/08_phak_ch6.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Universidad de Sevilla course files (Sadraey, Aircraft Design, Ch. 12)",
   "title": "Design of Control Surfaces (Aileron)",
   "url": "https://aero.us.es/adesign/Slides/Extra/Stability/Design_Control_Surface/Chapter%2012.%20Desig%20of%20Control%20Surfaces%20%28Aileron%29.pdf",
   "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": [
  "aileron",
  "differential-ailerons",
  "elevon",
  "flaperon",
  "spoiler",
  "trim-tab"
 ],
 "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": "Does a Frise aileron remove adverse yaw?",
   "a": "It reduces it, but coordinated rudder is still required (FAA PHAK ch.6)."
  }
 ],
 "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": "frise-aileron-wing-segment",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/frise-aileron/frise-aileron-wing-segment.step",
   "stl": "https://xemstudio.com/files/hardware/frise-aileron/frise-aileron-wing-segment.stl",
   "note": "frise aileron: wing segment 200 mm chord × 300 mm, 20 % chord surface deflected 20°"
  }
 ],
 "markdown": "https://xemstudio.com/objects/frise-aileron/index.md"
}