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Trim tab and antiservo tab

Name: Trim tab and antiservo tab dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How does a trim tab work? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: trim tab, elevator trim tab, antiservo tab, trim tab how it works, servo tab, anti servo tab stabilator, rudder trim tab, fixed trim tab

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

sizes: 2 in table

Notes

A trim tab is a small surface on a control surface's trailing edge that moves opposite to the surface, holding it deflected so the pilot needn't; full nose-down trim moves the elevator tab full up (FAA PHAK ch.6).
On a stabilator an antiservo tab moves the same way as the surface to add feel and prevent over-control (FAA).

Trim tab and antiservo tab size chart

parameter	value or range	source
Trim tab motion	opposite to the surface	FAA PHAK ch.6
Antiservo tab motion	same direction as stabilator	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.

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Plain text: sheet.txt · JSON: /api/geometry?object=trim-tab

Schematic, not to scale.