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Helicopter Autopilot issues

Posted: Sun Dec 02, 2018 5:37 pm
by Davio
Hi all,

I'm currently using the Cerasim UH-60 with HTR v1.5. I can use most of the features except the altitude hold during level flight. The aircraft experiences torque oscillations that range from 30%-130%. Is there any variable in the autopilot configuration that can be adjusted to eliminate or reduce the oscillations? I've also experienced this with the Cerasim B-222 with HTR v1.5 as well.

Re: Helicopter Autopilot issues

Posted: Mon Dec 03, 2018 2:29 pm
by Rob McCarthy
Hello,

Are you seeing this using v4.4?

Regards,
Rob McCarthy

Re: Helicopter Autopilot issues

Posted: Mon Dec 03, 2018 3:11 pm
by RCFlyer
I can confirm the oscillations using the Autopilot in a helicopters in V4.4. I use the AP in the Milvis B407 and get the oscillations much the same as when used in V4.3.

Danny

Re: Helicopter Autopilot issues

Posted: Mon Dec 03, 2018 11:49 pm
by Davio
Rob,

I have the issue with both v4.4 and v4.3. I've also disabled HTR and experience the same results.

Re: Helicopter Autopilot issues

Posted: Tue Dec 04, 2018 2:27 pm
by Rob McCarthy
This could be due to specifics in the flight model for these helicopters. You may want to reach out to these developers and see if they can replicate the issue.

Regards,
Rob McCarthy

Re: Helicopter Autopilot issues

Posted: Tue Dec 04, 2018 2:46 pm
by RCFlyer
I fly several different brands of helicopters (Milviz, Cerasim, Alabeo, etc.) and they all have the oscillation issue when the AP is engaged. The oscillation can be minimized by increasing the yaw_damper_gain value in the aircraft.cfg autopilot section to around 150.

Danny

Re: Helicopter Autopilot issues

Posted: Tue Dec 04, 2018 4:21 pm
by petergulch
Is there a newer version of the helicopter autopilot now that P3DV4.4 has been released? The one I currently have running is the one released for P3DV4.2 (the first one I assume).