Autopilot Rolls Into Turns Like A Fighter Pilot

Dynon101 said:
THANKS Don!!!
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Keep us posted here, I have the exact same symptoms after updating a few days ago. Your fighter pilot analogy is spot on! Haha I even get roll slip on my setup.

Don I’ll send you the setting requested on the other thread but can’t get to it for a week or so.
 
Don Jones said >
I have not heard of anything that changed with regards to auto pilot in V16.2.4, but I will look into it.
I will report back if I learn anything.

Don did you happen to come up with anything?

With my system I had not changed anything regarding any system parameters except uploading the new revision of the software and again today whilst droning along (half-asleep) I get to a course change of about 25 degrees and the little autopilot girl just cranks and banks the airplane around so quickly that it was startling...

It would be interesting to see what had changed in the new revision...
 
Dynon101 said:
Don Jones said >
I have not heard of anything that changed with regards to auto pilot in V16.2.4, but I will look into it.
I will report back if I learn anything.

Don did you happen to come up with anything?

With my system I had not changed anything regarding any system parameters except uploading the new revision of the software and again today whilst droning along (half-asleep) I get to a course change of about 25 degrees and the little autopilot girl just cranks and banks the airplane around so quickly that it was startling...

It would be interesting to see what had changed in the new revision...
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Engineering claims nothing was changed with the autopilot in 16.2.4, still looking into it as perhaps it is a result of some other change.
Unintended consequences and all that.....
 
I could use diagnostic files from you guys with this issue. Engineering wants to look into it.
 
I guess I expected the autopilot to select maximum bank based on standard rate turn. So we ended up reducing max bank to about 16 degrees for a c172. I would rather let it adjust bank for standard rate based on airspeed. But I'm happy with what we got.
 
djones said:
I could use diagnostic files from you guys with this issue. Engineering wants to look into it.
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I also have the abrupt roll behavior. It started with the upload of the new software and I have not noticed. Any other differences. The initiation of the roll is very abrupt, but then the roll rate settles down. I will try to send diagnostic files this week.
 
Solana said:
I also have the abrupt roll behavior. It started with the upload of the new software and I have not noticed. Any other differences. The initiation of the roll is very abrupt, but then the roll rate settles down. I will try to send diagnostic files this week.
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The diagnostic files have been uploaded!

Rick Solana
RV10
 
I did some ground testing, and in heading mode when the heading bug was centered and then moved off center the stick would quickly jerk. Then if the bug was moved further the stick would jerk again.

in flight the stick would jerk when the bug was moved off center, but when moved a second time withe plane established in the turn there was no further jerking.
 
Correct me if I'm wrong, but the autopilot shouldn't function on the ground. I thought there was a minimum airspeed that must be reached for the autopilot to activate. Or maybe that was the flight director...... Gotta break out the books again.
 
Rhino said:
Correct me if I'm wrong, but the autopilot shouldn't function on the ground. I thought there was a minimum airspeed that must be reached for the autopilot to activate. Or maybe that was the flight director...... Gotta break out the books again.
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You are correct that you cannot set the autopilot before takeoff for a flight. It will basically clear your commands at takeoff. Nonetheless, you can operate the autopilot, which you would want to do as a pre-flight check that it is functioning properly.
 
Solana said:
You are correct that you cannot set the autopilot before takeoff for a flight. It will basically clear your commands at takeoff. Nonetheless, you can operate the autopilot, which you would want to do as a pre-flight check that it is functioning properly.
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Also, the manual (at least the experimental manual) does not describe a pre-flight procedure for the autopilot. All certified aircraft I have flown have such a procedure, so you have to roll your own.
 
I have the exact same symptoms after updating. The roll is very aggressive and I get roll slip in turn. It was very smooth before the update. My cruise speed is around 110 Kts.
I’ll send the diagnostic files to you this week.
 
Hi Dynon Tech Support,

Any update on this issue? I am glad that it is not just me...
 
I updated/installed V16.2.4 a few weeks ago and so far have not noticed any difference at all in the Autopilot operation in my Bristell NG5. To me, so far at least, it seems to do banks and turns etc just the same as always has done.
 
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