Greetings all,
Well my Tarot TL8X bit the dust, literally. Spiraled out the sky from about 60 meters. I had logged about 2 hours of 4-7 minute flights over the last few weeks. On the day of the crash, I flew it twice before without a problem. I made some adjustments to the retractable landing gear the night prior that I suspect played into the crash. At first I thought the gear just pivoted into the motors when I extended it, but after reviewing the log I noticed some suspicious issues with the roll axis a minute before the crash. What I'm curious about is if the octo lost one or two motors. I noticed that on the RTL leg which started about about six minutes, the octo was not facing home. When it reached home a minute later, I put the gear down, and that is when all hell broke loose. You can see some roll anomalies at about the six minute point, but the octo was flying quite smooth for the next minute.
Thanks,
Replies
it's not supposed to yaw ahead during RTL unless you set WP_YAW_BEHAVIOR=3
Yes, not only roll - but also yaw get changed instantly.
you can clearly see how motors 7 and 2 is reducing throttle to compensate.
So your conclusion seems to be correct, the only thing I fail to see is why you crashed. it was flying fine with the problem for a while. - maybe other propellers got damaged and failed ?
maybe come motors rotated (twisted) on the arms if poorly mounted. - That could also explain gear reaching them.
Thanks Andre. The gear tube and skid was connected to the frame by the FPV transmitter wires, which were zip tied to the leg. I think that the gear tube broke from the mount during the flight and flew up into the first motor. I suspect that when I put the gear down, this shifted things and the loose leg flew around in the prop wash and took out another motor. The only part I couldn't recover was one half of a propeller.
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