Rudder Trim offsets

[black-hawk]

Dear Peter

I would like to know if the offsets exist for the 747-400 Rudder Trim.

Particularly would need me to know what the offset is (to 16bit it would be better since it would have a value that varies from -16386 to +16386) to vary the trim of the Rudder, and what the offset that I can use for visualizing the position of the Rudder trim is (to 16bit it would be better since it would have a value that varies from -16386 to +16386) considering that I have built a display to visualize the value.

I thank you in advance

Ettore Mele

http://www.747-400.it

[Pete Dowson]

I would like to know if the offsets exist for the 747-400 Rudder Trim.

Particularly would need me to know what the offset is

You need to download the FSUIPC SDK and check the Programmer's Guide. Just do a search on the words "rudder trim" and you will find it -- this is what I always do to find things. (Sorry, I've not got that PC on at present).

(to 16bit it would be better since it would have a value that varies from -16386 to +16386) to vary the trim of the Rudder, and what the offset that I can use for visualizing the position of the Rudder trim is (to 16bit it would be better since it would have a value that varies from -16386 to +16386) considering that I have built a display to visualize the value.

As far as I know there is only one trim value, which is both control and indicator, but it is in double floating point format and the units are something like radians. In a program I am doing to set/read trims for a 737NG I found the value ranges from 0.0 to 0.2, so you'd need to scale this to suit your needs. You may want to monitor the value in that offset (eg using FSUIPC's Monitoring facilities) to see what range you get in your chosen aircraft.

Regards,

Pete