JJBspark
Core User of DJI
Flight distance : 12225059 ft
Netherlands
Offline
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Hi KMatulovich,
Thanks for uploading.
Bit difficult to analyse beacuse you did not use controller but just a mobile device. Stick inputs are not present in the flightlog.
In the log many YAW errors , IMU encouters heading excursion, so Spark went into ATTI mode.
The pitch and roll angles of your Spark in ATTI (all the time) almost flat, meaning no stick input from you. Spark drifing in a steady pace in the direction approx. 130 - 135 with a speed of 3 - 6 m/s.
In ATTI when loosing connection Spark goes into landing. An Autolanding (initiate by you?) starts at distance 85.5 meter, reducing height 22 to 14 meter.
Autolanding cancelled by you, meaning at 134 meters you still had a connection with the drone!
Spark drifting further in same direction, as long as there is a connection it will continue to drift further. Moment connection gets lost it will execute a landing.
If i look at Google Earth i see trees coming in the direction Spark is drifing.
Last record shows a disconnect (so in ATTI it will land) ; so it will fly 20 secs before it will autoland.My guess is that your drone is 172 meters (plus/minus 10) further than last position in the direction 135.
This if your Spark did not hit the trees and powerlines in that fly-path....
Why you had yaw errors followed by IMU and compass errors ; i cannot tell, maby taking of taking of from concrete with rebar or compass swing done before witch introduces comp errors.
cheers
JJB
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