Wellsi
First Officer
Flight distance : 8330187 ft
United Kingdom
Offline
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hallmark007 Posted at 2018-9-29 12:39
The best way I can explain this is. If you put your Aircraft on the ground in normal circumstances, start it up, then lift it up and turn it 90 degrees to the right both your compass heading and IMU will both move together 90 degrees and no problems.
If you put your Aircraft on the ground and there is magnetic interference only the heading of your compass will change, your aircraft will still take off. But when it clears magnetic interference compass will then move to correct heading which you would think was great. But No, what happens is IMU is then conflicted and confused because of this sudden movement by compass, so you receive IMU exceptional heading warning, your aircraft cannot deal with data conflict so decides to switch to Atti mode dropping gps in favour of compass simply because aircraft can fly without gps but not compass.
Nice explanation Hallmark.
This exact scenario happened to me with my AIr when flying on a beach near Frinton, so there were loads of houses less than 100 metres away, and despite having no warning's on the ground, I suffered multiple interference in flight which resulted in the Air flipping into ATTI mode and zooming off with the wind. Happened 3 times in the same afternoon; each time luckily the interference stopped at some point allowing me to head back home.
This was the day I lost my faith in the Air. Great little drone and still use it when I'm way out in the countryside or hiking, but it's too easily confused when there's interference around....
Ian |
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