Initial trim setting

[_486_Col_Wolf]

Does anyone know if the initial trim setting can be varied by AIREd? One of my AC uses the "Fuel CG Trim" window. At startup the initial elevator trim is -0.88, pressing the ACM Trim switch lowers it to 0.00. Is there a way in AirEd to change this to -0.54 at startup?

 

[bearcat241]

486_Col_Wolf, Let's open your *.air file and focus on section 1101, entry "Pitch Moment Coeff at AoA=0 (CoG offset)". If you're reading initial elevator trim of -0.88 with the gauge, your Pitch Moment Coeff should be a negative number, probably around -3. Raise it to -2 or -1 to hit an approximate reading of -0.54.

 

[Shessi]

That's an interesting nugget of info!

You see, you do learn something new every day....

Thanks for that.

Shessi

 

[bearcat241]

Just my best guess without seeing the entire FDE picture

 

[_486_Col_Wolf]

Bearcat, Well for a best guess it was spot on. Lowered it from -14 to -8 and was dead on -.54 on the gauge. Thanks!

 

[bearcat241]

Yessir...glad that helped