ADAHRS primary and secondary discrepancy when looping

[Plopper]

In most cases when performing a standard looping (approx. 3-3.5G) I get a SkyView warning (just after flying level again) that my ADAHRS modules differ. When I press 'compare' both ADAHRS show the same values (again), so I can safely ignore the warning.

Up to now I have only had this behaviour when performing loops. No problems whatsoever in normal flight or doing other (light) aerobatics such as barrel, aileron or snap rolls or spins/spirals etc. Both (primary and secondary) ADAHRS-es are stacked in the same location (using Dynon's standard stacking plate), inside the airframe, well away from any magnetic interference or moving parts.

I am not really concerned that anything is wrong or defective, but just curious if anyone has experienced the same?

Best regards,

Roel

 

[RVDan]

There are pitch and roll rate limits to the adahrs units. I don’t recall what they are, but have also experienced this during aerobatics. FYI, all non-military adahrs and ahrs units that I know of have rate limits.

 

[Rhino]

Pilot error. You made them loopy. Dan probably has it right. They aren't really designed for aerobatics. Now, if they do that in normal flight.....