VTOL Strange behaviour after firmware updated to 4.3.2

ArduPlane VTOL Plane
1

HI ALL
My VTOLwas working well before updating the firmware to 4.3.2
When testing in automission is acting in strange way as it shown in photo

Sans titrem
Sans titrem1680×1050 186 KB

I would appreciate any advice for that issue.
Best Regards

2

here my log file for any purpose
i’m using mfe fighter vtol 4+1
https://drive.google.com/file/d/1u1uJCQwQteaCwelZCm9Ew_u7HlpSmYQt/view?usp=share_link

3

hi ı have a kind of same issue, ı am in a 4.2.3 fw, but my plane is 4 meter wingspan, did you solve that problem

4

The log file is locked.

5

sorry for that, file unlocked.

6

unfortunately not yet !

7

All the pitch and roll tuning parameters for fixedwing mode are still at default. The plane needs to be tuned.

https://ardupilot.org/plane/docs/tuning-quickstart.html#tuning-quickstart

8

Thanks a lot , i’ll do that then reply again
also until now i’m not using airspeed while i have tow installed because of previous problem in transission phase. to prevent such behavior is it mandatory to activate them ?
Best Regards

9

Can you clarify this? Do you mean two installed?

I can’t speak to how AP handles transitions without airspeed, however in fixed-wing mode AP will fly very well without airspeed but it will fly better with an airspeed sensor. So it’s your call.

10

Thanks Allister for your replay.
For airspeed , yes i mean tow installed but deactivated du to airspeed failure one day when the drone attempt to do transition from vtol to fixed-wing.
since that day i disabled it and the drone fly very well. I tested in 18KM range, 500m altitude and flaying for 1hour with only 48% of the battery capacity and everything was great before updating firmware to 4.3.2. And even now every think is well except the attitude of the VTOL when reaching a WP.
That behavior was smooth before updating firmware even without tuning roll and pitch like you mentioned as it shown in this photo.

image
image1680×1050 158 KB

but now it become like this after updating the firmware.
image
image1035×646 97.7 KB

Best Regards

11

The flight path has nothing to do with the update, but with WP_RADIUS set to 2 meters. Therefore, the aircraft overshoots each waypoint by far instead of turning in time to the next one.

Rolf

12

Thanks Rolf ,
that make sense now. i’ll adjust wp_radius to a reasonable value and try again.
Best Regards

13

Hello @Foued_Ammar ,
Just curious, have you solved the problem after increasing the WP radius?? I am just about to upgrade my Vtol to the latest version, but need to make sure evething is ok… Thank you