Does it looks like a stall?

ArduPlane Plane 4.5
1

Hi!

The plane was in Autotune mode. pitch axis.

This flight was without gps, and we saw in the tlog file that the pixhawk trying to roll CW to fix the CCW turn

I know there is a lot of missing data, but what is looks like for you?

I attaced a dropbox video link

Thanks!

2

I’m no expert, but I have stalled a RC fixed wing & done recovery. This does not “obviously” look like a stall to me, although it might be one.

You said

we saw in the tlog file that the pixhawk trying to roll CW to fix the CCW turn

To make sure I understand:

  • In the video I observe a CCW roll.
  • You said the autopilot was attempting to roll CW.
  • That suggests the autopilot detected that the vehicle was rolling, but was unable to correct.
  • (I agree that a stall might prevent an otherwise-correctly-setup autopilot from correcting.)

A side point: Its been a while since I looked at logs, but I typically analyzed the .bin file (from the SD card) rather than the .tlog to understand the autopilot. If you want more help, can you clarify what you found in the log(s)?

(OK also if you just wanted a quick 2nd opinion. No reply needed. Hopefully if others think this was a stall, they’ll also chime in.)

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