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Bert Pieke

EHSI Gyro drift

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The EHSI heading is affected by gyro drift in the sim.. 

 

If you have Gyro Drift set to off in the Realism settings, this should not affect you..

 

However if it still occurs, you can add a line to an Update section to check for drift, and reset the Gyro (same as pushing the "D" key).

 

For example in the EHSIVC xml file, there is an Update section near the top.

 

Add the highlighted line:

 

<Update>
           <Script>

 

(A:PLANE HEADING DEGREES GYRO, radians) (A:PLANE HEADING DEGREES MAGNETIC, radians)  !=  if{ (>K:HEADING_GYRO_SET) }

                   (L:EHSIInit) 0 == if{

 

 

Alternately, you could replace GYRO by MAGNETIC further down in the Rotate section.  This, however hides the fact that drift is occurring, and things like GPS approaches can be thrown off... so, better to reset the Gyro.

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Very informative Bert - I have always had this issue... Its good not have to press "D" all the time....

 

Thanks

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Bert this is in the

 

GaugePC12EHSI

             >Gauge_EFIS50_EHSIVC

 

Correct?

 

And do I add the;

 

(L:EHSIInit) 0 == if{

 

or do I change the "(L:Init) 0 == if{"     to       "(L:EHSIInit) 0 == if{"

 

Thanks

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Correct file, but no, make neither of those changes.

 

If you have L:Init.. that is fine.

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Hello

 

I've changed [direction_indicators] section in aircraft.cfg. Carenado planes always have vacuum gyro for some reason, and for me it looks very unrealistic when you get gyro drift on an EHSI.

So I changed it for electro-magnetic slaved compass and it works without gyro drift.

 

 [direction_indicators]

//1 Type: 0=None, 1=Vacuum Gyro, 2=Electric Gyro, 3=Electro-Mag Slaved Compass, 4=Slaved to another
//2 Indicator number of slaving indicator if Type = 4
direction_indicator.0=3,0
 
Tamas

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