KlooGee
First Officer
Flight distance : 16783757 ft
United States
Offline
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My first inclination when first looking at this was like everybody else assuming it was a wind issue. However, as I looked at it closer, I noticed a sudden and dramatic change in the direction the drone was pointed.
Something happened at the 1m 6.8s moment in the flight. I think it was likely whatever caused this that ended up resulting in the symptoms that were seen for the next period of time.
Prior to this time, the heading was pretty steady with no stick input and was facing at approximately 257 degrees. Then within 1/10th of a second, it jumped approximately 90 degrees and was then pointed at 346.9 degrees. And then 2/10th of a second later it was another 51 degrees and was now facing at 38.6 degrees for a total of almost 140 degree change in direction within 3/10th of a second.
Timestamp - Heading
1m 6.6s - 257.4
1m 6.7s - 257.4
1m 6.8s - 346.9
1m 6.9s - 346.9
1m 7s - 38.6
1m 7.1s - 38.7
I'm not sure if the drone actually changed directions that quickly or its sensors just thought it changed directions.
Either way, it seems to me like something abnormal happened there and very likely was the precursor to the drone floating around uncommanded.
Not sure if it would be from the wind, compass interference, a bird strike, or just a straight up IMU malfunction. I don't think it was likely wind or a bird strike because there were no associated sudden changes in pitch or roll values. My inclination is likely that it was a compass/magnetic interference issue that only showed once the drone got up to altitude away from whatever was causing the interference on the ground. However, that inclination is just a guess and not based on anything I saw in the logs as there is no evidence of it in the logs. |
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