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Mid wing placement

What are the advantages of a mid-mounted wing? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: mid wing, mid wing aircraft, mid wing rc plane, mid wing aerobatic, mid wing vs low wing, mid wing interference drag, pattern plane wing position, 3d plane wing position

Exact dimensions. True size, with no printing tolerance added.

sizes
4 in table

Notes

  • A mid wing meets the fuselage at right angles, which wind-tunnel reports favoured for low interference drag (US Naval Institute, Corsair design history).
  • With ailerons, McCombs recommends 'essentially 0 deg' effective dihedral for mid-wing and biplane RC models, and 7-8 deg for rudder-only mid-wing models (Model Aviation). That near-neutral roll response suits aerobatic aircraft (Kitplanes).
  • A mid wing's spar crosses the fuselage, which can be awkward; the Corsair's designers avoided a long, heavy landing gear by bending the wing instead (USNI).
  • 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.

Mid wing placement size chart

parametervalue or rangesource
RC with ailerons, mid wingessentially 0 degMcCombs 1994
RC rudder-only, mid wingabout 7-8 degMcCombs 1994
FF scale, mid wing EVD0-5 degMcCombs 1994
Reference build1000 x 200 mm, 0 deg dihedralMcCombs

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

US Naval Institute, Naval History MagazineDesigning the Bent-Wing Bird (Feb 1995)webPublisher's page; dimensions are facts
Model Aviation (AMA), W.F. McCombsWing and Tail Dihedral for Models (Dec 1994)webPublisher's page; dimensions are facts
Kitplanes (B. Wainfan)Wind Tunnel: Roll's role in lateral stability (2008)webPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

mid-wing-wingrectangular planform: span 1000, root 200, tip 200 mm, LE sweep 0°, dihedral 0°, NACA 0012STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=mid-wing

Mid wing placement, isometric render of a generated part
Render of mid-wing-wing from the free STEP; not to scale.

Fits with

Questions

Why do aerobatic RC planes use mid wings and no dihedral?

Near-neutral roll stability gives crisp, uncoupled rolls (Kitplanes; McCombs gives ~0 deg).