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Coupled ailerons and rudder
What are coupled ailerons and rudder? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Also called: aileron rudder interconnect, aileron to rudder mix, rudder coupling, adverse yaw rudder, coordinated turn mix, ari system, aileron rudder spring
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 1 in table
Notes
- Coupled controls link the rudder to the ailerons with interconnect springs, so aileron input also deflects the rudder to counter adverse yaw; the pilot can override the springs to slip (FAA PHAK ch.6).
- The rudder requirement is greatest at low airspeed, high AoA and large aileron deflection (FAA), which is why RC 'aileron-to-rudder mix' is popular on slow models.
Coupled ailerons and rudder size chart
| parameter | value or range | source |
|---|---|---|
| Rudder demand peak | low speed, high AoA, large aileron | FAA PHAK ch.6 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| FAA | Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Ch. 6 Flight Controls | web | Publisher's page; dimensions are facts |
Xem scan
File coming
No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=coupled-aileron-rudder
Questions
Should I mix rudder with ailerons?
It counters adverse yaw, which is worst slow and at high AoA (FAA PHAK ch.6).