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FS2004 Aileron Trim

vololiberista

vololiberista

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With (A:Aileron Trim) is it correct to use (>K:AILERON_TRIM_LEFT) (>K:AILERON_TRIM_RIGHT) to adjust the values or should I use another K:var?

Reason for asking is that putting values into (>K:AILERON_TRIM_LEFT) etc e.g. 8000 (>K:AILERON_TRIM_LEFT) seems to do nothing at all.
 
That's because they're increment keys... no value is accepted. Each call moves the trim either left or right a set amount.
 
AXIS_AILERONS_SET
Sets aileron position (-16383 - +16383)
Shared Cockpit (Pilot only, and not transmitted to Co-pilot)

-8000 (>K:AXIS_AILERONS_SET)
 
Ed is right, there is no SET event for aileron/rudder trim. In FSX with XMLTools it is possible to directly write to AILERON TRIM PCT variable, unfortunately not available in FS2004...

Tom
 
Actually there is. It just isn't documented. It is listed however in the Gauges.h.

K:AILERON_TRIM_SET and K:RUDDER_TRIM_SET

And for C++:
#define KEY_AILERON_TRIM_SET (KEY_ID_MIN + 1195)

#define KEY_RUDDER_TRIM_SET (KEY_ID_MIN + 1196)
 
Naruto-kun said:
Actually there is. It just isn't documented. It is listed however in the Gauges.h.

K:AILERON_TRIM_SET and K:RUDDER_TRIM_SET

And for C++:
#define KEY_AILERON_TRIM_SET (KEY_ID_MIN + 1195)

#define KEY_RUDDER_TRIM_SET (KEY_ID_MIN + 1196)
Click to expand...

Tried K:AILERON_TRIM_SET and it didn't work (A:Aileron Trim) remained unchanged.
It would appear to be not possible to adjust the aileron trim.
 
(FSX!)

99 (>K:AILERON_TRIM_SET) results in "99" for (A:AILERON TRIM PCT, percent)
 
Heretic said:
(FSX!)

99 (>K:AILERON_TRIM_SET) results in "99" for (A:AILERON TRIM PCT, percent)
Click to expand...
Unfortunately H in FS2004 the result for (A:AILERON TRIM PCT, percent) is zero :(

Just wondering if something has to be activated in the cfg file - Any ideas?
 
Not that I know of...if it works in FSX but not FS9 then its FSX only I'm afraid.
 
I do not recall said CFG entry, but have been using a working aileron trim in FS9 ever since...
make sure air file sec.516 is there... and that the entry for aileron trim scalar is not 0. If I recall correctly, aileron and rudder trims have hard-coded max deflections. I think they are 10°.
 
Volo
Mariopilot has it correct. I have VC10C1K.air and it is missing Record 516.That was the original DM air file and I guess you have not added a 516.
516 is Aileron and rudder trim. It is also AIR_61S_AIL_RUD_TRIM_CONSTANTS
Incidentally, 515 is also to do with aileron and rudder trim, but does not have a corresponding token
Roy
 
Last edited:
thanks guys I'll check that out.
mariopilot said:
I do not recall said CFG entry, but have been using a working aileron trim in FS9 ever since...
make sure air file sec.516 is there... and that the entry for aileron trim scalar is not 0. If I recall correctly, aileron and rudder trims have hard-coded max deflections. I think they are 10°.
Click to expand...


I found a table 516 which had *Aileron (neg)=-0.2000 Does that make sense?
 
Apparently AAM suggests between -0.05 to 0.1. -02. may be too large. Compare with Cl_da (aileron control in sec.1101) to have an idea...
Too large may not allow for fine adjustment (I hate aircraft when one button press alters pitch attitude by 15°...)
 
mariopilot said:
Apparently AAM suggests between -0.05 to 0.1. -02. may be too large. Compare with Cl_da (aileron control in sec.1101) to have an idea...
Too large may not allow for fine adjustment (I hate aircraft when one button press alters pitch attitude by 15°...)
Click to expand...

Thanks M,
I'll first see whether or not I can get a value into (A:Aileron Trim) and then I can play around with the sensitivity. The objective is to have a functioning Aileron Upset Switch. Which deflects both ailerons up by 7deg to aleviate wing loading.
 
First, you won't be getting both ailerons to lift up at the same time. The sim doesn't support that type of behavior, though you might be able to pull it off in FSX with SimConnect.

Second, I loaded an aircraft into FSX and I was able to read (A:AILERON TRIM) in degrees or radians correctly, as well as the TOKEN_VAR of AILERON_TRIM which is in radians.

I used KEY_AILERON_TRIM_LEFT and KEY_AILERON_TRIM_RIGHT to move the trim value.
 
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