Elevator Trim Linked To Flap Settings
Posted: Thu Mar 21, 2024 9:37 pm
While reading an article from 2018 I found an interesting tidbit of information:
The last line of the second paragraph is intriguing. How would that be implemented? Setting the elevator trim for the flap settings in my Cleanex is not difficult at all (I have the manual trim lever). Perhaps a UK builder or pilot can comment ...
https://pilotweb.aero/aircraft/flight-t ... x-6288662/
Dale
3.0 Corvair/Taildragger
Most Sonexes are trimmed using the AeroConversions Trim System fitted to ‘NX, which uses a trim wheel and jackscrew assembly combined with two springs to put tension on the control stick. Basically, turning the panel-mounted trim wheel anti-clockwise adds ‘nose down’ pitch trim by applying spring-loads to the elevator circuit.
To trim ‘nose up’ simply turn the trim wheel clockwise. However, for UK-registered aircraft the LAA also requires the original elevator trim tab on the port elevator to be retained and linked directly to the flap lever, so that as flap is extended the elevator trim tab simultaneously and automatically trims ‘nose up’.
The last line of the second paragraph is intriguing. How would that be implemented? Setting the elevator trim for the flap settings in my Cleanex is not difficult at all (I have the manual trim lever). Perhaps a UK builder or pilot can comment ...
https://pilotweb.aero/aircraft/flight-t ... x-6288662/
Dale
3.0 Corvair/Taildragger