I know this has been described as fly away. Is it possible that it's actually a drift away? I know that the P3 reached 20 M/sec but the speed increased with altitude.
Since you have a P3 Standard there is no motor speed or load data. But there is motor commanded dataThat may be possible, although the first spike in speed (0:54 Run Time) when I initially realized something was wrong, the drone was at a steady altitude, but traveled at 74 kmh (45 mph) with out any added input from the controller and just drift alone. There was really next to no wind this morning. I know its normal to experience some drift in atti mode when there is no noticeable wind, but I haven't had it shoot off the way it did this morning.
I got a RMA, fingers crossed that it's covered.
Thanks for the analysis everyone! I think I have learned more in one day about the workings of my drone due to this than I have flying it over the past few months.
The strange thing if wind (that would be a heavy gust) is the RC lost. Could low RC battery be the cause? Was it fully charged?
Are there any log files showing RC battery data? I hadn't realised this is a P3 standard which explains the motor graphs.
I don't know about classic TBE in general. But, in this particular flight the "flyaway" was triggered when RTH was initiated and the yaw value was incorrect. Before launch the compass was incorrect. Shortly after launch the compass started having the right value but yaw didn't change to reflect the correct compass value. Yaw is a calculation done by the flight controller and was incorrect when RTH was initiated. Take a look at the post right before your post.From the video, this looks like classic TBE caused by what I suspect is a bad calibration. The initial pattern is a large circle. The camera horizon begins to drift right at the same time which is another symptom.
It's hard to explain why this didn't happen on the first flight but I know that often the bad calibration fly away won't always happen. There will be a heading that triggers it.
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