{
 "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": "ag35-airfoil",
 "name": "AG35 airfoil (Drela AG series)",
 "kind": "standard",
 "category": "Airfoils",
 "group": "Airfoils",
 "year": null,
 "question": "What are the AG35-AG38 airfoils?",
 "tags": [
  "vehicle design",
  "airfoils",
  "rc design",
  "aerodynamics",
  "guide"
 ],
 "aliases": [
  "ag35",
  "ag35 airfoil",
  "drela ag35",
  "ag series airfoil",
  "ag35 ag36 ag37 ag38",
  "bubble dancer airfoil",
  "rudder elevator spoiler glider airfoil",
  "drela airfoil",
  "ag35 coordinates",
  "res glider airfoil"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/ag35-airfoil/",
 "sheet_txt": "https://xemstudio.com/objects/ag35-airfoil/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": [
   "AG35-AG38 are Mark Drela's thin airfoils used across the wing of the Bubble Dancer 3 m RES sailplane, with ht21 for the tail surfaces (CRRC).",
   "The design combined the Allegro layout with 'some new thin airfoils' for easy building as a thermal glider that can still handle wind and winch launches; the model weighs about 31 oz with a sink rate of about 0.8 ft/s (CRRC).",
   "Used on: Bubble Dancer (RC sailplane), Allegro-Lite (prototype wing)."
  ],
  "table": {
   "columns": [
    "parameter",
    "value or range",
    "source"
   ],
   "rows": [
    [
     "Bubble Dancer wing airfoils",
     "ag35, ag36, ag37, ag38",
     "CRRC"
    ],
    [
     "Tail airfoil",
     "ht21",
     "CRRC"
    ],
    [
     "Span / area",
     "120 in / 1000 in^2",
     "CRRC"
    ],
    [
     "Weight / sink",
     "~31 oz (880 g) / ~0.8 ft/s",
     "CRRC"
    ],
    [
     "Coordinates source",
     "Drela airfoil files on CRRC Bubble Dancer page",
     "CRRC"
    ]
   ]
  }
 },
 "sheet_text": "AG35 airfoil (Drela AG series) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/ag35-airfoil/  (sheet CC BY 4.0)\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- AG35-AG38 are Mark Drela's thin airfoils used across the wing of the Bubble Dancer 3 m RES sailplane, with ht21 for the tail surfaces (CRRC).\n- The design combined the Allegro layout with 'some new thin airfoils' for easy building as a thermal glider that can still handle wind and winch launches; the model weighs about 31 oz with a sink rate of about 0.8 ft/s (CRRC).\n- Used on: Bubble Dancer (RC sailplane), Allegro-Lite (prototype wing).\n\nparameter  value or range  source\nBubble Dancer wing airfoils  ag35, ag36, ag37, ag38  CRRC\nTail airfoil  ht21  CRRC\nSpan / area  120 in / 1000 in^2  CRRC\nWeight / sink  ~31 oz (880 g) / ~0.8 ft/s  CRRC\nCoordinates source  Drela airfoil files on CRRC Bubble Dancer page  CRRC\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Charles River Radio Controllers (M. Drela designs): Bubble Dancer 3m RES sailplane — web — Publisher's page; dimensions are facts — https://charlesriverrc.org/articles/on-line-plans/mark-drela-designs/bubble-dancer/\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=ag35-airfoil\n",
 "sources": [
  {
   "publisher": "Charles River Radio Controllers (M. Drela designs)",
   "title": "Bubble Dancer 3m RES sailplane",
   "url": "https://charlesriverrc.org/articles/on-line-plans/mark-drela-designs/bubble-dancer/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "clark-y-airfoil",
  "selig-s1223-airfoil",
  "eppler-e387-airfoil",
  "mh32-airfoil"
 ],
 "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": "Where do AG35-AG38 go on the wing?",
   "a": "They are listed together for the Bubble Dancer wing; the page does not give spanwise stations (CRRC)."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/ag35-airfoil/index.md"
}