{
 "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": "naca-2415-airfoil",
 "name": "NACA 2415 airfoil",
 "kind": "standard",
 "category": "Airfoils",
 "group": "NACA 4-digit",
 "year": null,
 "question": "What is the exact shape of the NACA 2415 airfoil, and what do the digits mean?",
 "tags": [
  "airfoil",
  "naca",
  "wing section",
  "rc plane",
  "aerodynamics",
  "cambered airfoil"
 ],
 "aliases": [
  "NACA 2415",
  "NACA 2415 airfoil",
  "NACA 2415 coordinates",
  "NACA 2415 dat",
  "NACA 2415 profile",
  "NACA 2415 DXF",
  "NACA 2415 STEP",
  "NACA 2415 STL",
  "perfil NACA 2415",
  "Profil NACA 2415",
  "naca2415",
  "NACA 2415 wing section"
 ],
 "overall_mm": {
  "length": 100,
  "width": 20,
  "height": 15
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/naca-2415-airfoil/",
 "sheet_txt": "https://xemstudio.com/objects/naca-2415-airfoil/sheet.txt",
 "sheet": {
  "basis": "Computed from the NACA equations (Report 460 / Report 610, restated in NASA TM-4741)",
  "overall_mm": {
   "length": 100,
   "width": 20,
   "height": 15
  },
  "notes": [
   "NACA 2415: 2 % camber at 40 % chord, 15 % thick.",
   "NACA 4-digit: first digit = maximum camber in % of chord, second = its position in tenths of chord, last two = maximum thickness in % of chord (NACA Report 460).",
   "Ordinates are in % of chord from the leading edge, computed from the published equations with the closed-trailing-edge thickness coefficient (−0.1036, as in NASA TM-4741). The original reports use an open trailing edge (−0.1015); the difference is under 0.03 % of chord near the trailing edge.",
   "The file is a 100 mm chord section, 20 mm deep: scale it uniformly to your chord, or import the STEP and sweep or loft it into a wing. Thickness scales with chord; the shape is the same at any size."
  ],
  "table": {
   "columns": [
    "x (% chord)",
    "upper x",
    "upper y",
    "lower x",
    "lower y"
   ],
   "rows": [
    [
     "0",
     "0.000",
     "0.000",
     "0.000",
     "0.000"
    ],
    [
     "1.25",
     "1.022",
     "2.479",
     "1.478",
     "-2.233"
    ],
    [
     "2.5",
     "2.195",
     "3.496",
     "2.805",
     "-3.012"
    ],
    [
     "5",
     "4.613",
     "4.895",
     "5.387",
     "-3.958"
    ],
    [
     "7.5",
     "7.075",
     "5.912",
     "7.925",
     "-4.553"
    ],
    [
     "10",
     "9.562",
     "6.712",
     "10.438",
     "-4.962"
    ],
    [
     "15",
     "14.583",
     "7.887",
     "15.417",
     "-5.450"
    ],
    [
     "20",
     "19.642",
     "8.663",
     "20.358",
     "-5.663"
    ],
    [
     "25",
     "24.722",
     "9.139",
     "25.278",
     "-5.702"
    ],
    [
     "30",
     "29.813",
     "9.374",
     "30.187",
     "-5.624"
    ],
    [
     "40",
     "40.000",
     "9.250",
     "40.000",
     "-5.250"
    ],
    [
     "50",
     "50.073",
     "8.552",
     "49.927",
     "-4.663"
    ],
    [
     "60",
     "60.126",
     "7.460",
     "59.874",
     "-3.905"
    ],
    [
     "70",
     "70.151",
     "6.040",
     "69.849",
     "-3.040"
    ],
    [
     "80",
     "80.143",
     "4.322",
     "79.857",
     "-2.100"
    ],
    [
     "90",
     "90.095",
     "2.315",
     "89.905",
     "-1.093"
    ],
    [
     "95",
     "95.054",
     "1.198",
     "94.946",
     "-0.559"
    ],
    [
     "100",
     "100.000",
     "-0.000",
     "100.000",
     "0.000"
    ]
   ]
  }
 },
 "sheet_text": "NACA 2415 airfoil — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/naca-2415-airfoil/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Computed from the NACA equations (Report 460 / Report 610, restated in NASA TM-4741)\nCatalog version: 2026-10-20\n\nOverall (mm): length 100.0, width 20.0, height 15.0\n- NACA 2415: 2 % camber at 40 % chord, 15 % thick.\n- NACA 4-digit: first digit = maximum camber in % of chord, second = its position in tenths of chord, last two = maximum thickness in % of chord (NACA Report 460).\n- Ordinates are in % of chord from the leading edge, computed from the published equations with the closed-trailing-edge thickness coefficient (−0.1036, as in NASA TM-4741). The original reports use an open trailing edge (−0.1015); the difference is under 0.03 % of chord near the trailing edge.\n- The file is a 100 mm chord section, 20 mm deep: scale it uniformly to your chord, or import the STEP and sweep or loft it into a wing. Thickness scales with chord; the shape is the same at any size.\n\nx (% chord)  upper x  upper y  lower x  lower y\n0  0.000  0.000  0.000  0.000\n1.25  1.022  2.479  1.478  -2.233\n2.5  2.195  3.496  2.805  -3.012\n5  4.613  4.895  5.387  -3.958\n7.5  7.075  5.912  7.925  -4.553\n10  9.562  6.712  10.438  -4.962\n15  14.583  7.887  15.417  -5.450\n20  19.642  8.663  20.358  -5.663\n25  24.722  9.139  25.278  -5.702\n30  29.813  9.374  30.187  -5.624\n40  40.000  9.250  40.000  -5.250\n50  50.073  8.552  49.927  -4.663\n60  60.126  7.460  59.874  -3.905\n70  70.151  6.040  69.849  -3.040\n80  80.143  4.322  79.857  -2.100\n90  90.095  2.315  89.905  -1.093\n95  95.054  1.198  94.946  -0.559\n100  100.000  -0.000  100.000  0.000\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- NACA (NASA Technical Reports Server): Report 460: The characteristics of 78 related airfoil sections from tests in the variable-density wind tunnel (Jacobs, Ward, Pinkerton, 1933) — web — Publisher's page; dimensions are facts — https://ntrs.nasa.gov/citations/19930091108\n- NASA: TM-4741: Computer program to obtain ordinates for NACA airfoils (Ladson, Brooks, Hill, Sproles, 1996) — web — Publisher's page; dimensions are facts — https://www.pdas.com/refs/tm4741.pdf\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/naca-2415-airfoil/index.json\nAPI: https://xemstudio.com/api/geometry?object=naca-2415-airfoil\n",
 "sources": [
  {
   "publisher": "NACA (NASA Technical Reports Server)",
   "title": "Report 460: The characteristics of 78 related airfoil sections from tests in the variable-density wind tunnel (Jacobs, Ward, Pinkerton, 1933)",
   "url": "https://ntrs.nasa.gov/citations/19930091108",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "NASA",
   "title": "TM-4741: Computer program to obtain ordinates for NACA airfoils (Ladson, Brooks, Hill, Sproles, 1996)",
   "url": "https://www.pdas.com/refs/tm4741.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": [
  "naca-2408-airfoil",
  "naca-2410-airfoil",
  "naca-2411-airfoil",
  "naca-2412-airfoil",
  "naca-2414-airfoil",
  "naca-2418-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": "How thick is the NACA 2415?",
   "a": "Maximum thickness 15.00 % of chord at 30.0 % chord: 15.00 mm on a 100 mm chord."
  },
  {
   "q": "Where is the NACA 2415's camber?",
   "a": "Maximum camber 2.00 % of chord at 40.0 % chord."
  },
  {
   "q": "How do I use it for my wing?",
   "a": "Scale the 100 mm section to your chord (e.g. 180 mm chord = 180 % scale), then extrude or loft between root and tip sections. For a tapered wing, scale a root and a tip copy and loft between them."
  }
 ],
 "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": "naca-2415-airfoil-section-100mm-chord",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/naca-2415-airfoil/naca-2415-airfoil-section-100mm-chord.step",
   "stl": "https://xemstudio.com/files/hardware/naca-2415-airfoil/naca-2415-airfoil-section-100mm-chord.stl",
   "note": "NACA 2415 section, 100 mm chord × 20 mm span, closed trailing edge, 160 points from the equations (scale to your chord)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/naca-2415-airfoil/index.md"
}