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Frise aileron

What is a Frise aileron? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: frise ailerons, offset hinge aileron, frise aileron vs differential, adverse yaw aileron, cessna aileron type, frise aileron rc, aileron nose drag

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

sizes
3 in table

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.

Frise aileron size chart

parametervalue or rangesource
Hingeoffset, above the usual locationFAA PHAK ch.6; Sadraey ch.12
UsageCessna aircraft generallySadraey ch.12
Reference buildchord 200, 20% aileron, 20 deg upillustrative

Where the files are

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

FAAPilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Ch. 6 Flight ControlswebPublisher's page; dimensions are facts
Universidad de Sevilla course files (Sadraey, Aircraft Design, Ch. 12)Design of Control Surfaces (Aileron)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

frise-aileron-wing-segmentfrise aileron: wing segment 200 mm chord × 300 mm, 20 % chord surface deflected 20°STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=frise-aileron

Frise aileron, isometric render of a generated part
Render of frise-aileron-wing-segment from the free STEP; not to scale.

Fits with

Aileron, isometric render of a generated part
Aileron7 sizes★ 1 file
Differential ailerons, isometric render of a generated part
Differential ailerons4 sizes★ 1 file
Elevon, isometric render of a generated part
Elevon2 sizes★ 1 file
Flaperon, isometric render of a generated part
Flaperon3 sizes★ 1 file
Spoiler, isometric render of a generated part
Spoiler2 sizes★ 1 file
Trim tab and antiservo tab2 sizes★ sheet

Questions

Does a Frise aileron remove adverse yaw?

It reduces it, but coordinated rudder is still required (FAA PHAK ch.6).