Farnk666
lvl.4
Flight distance : 1711394 ft
Australia
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Hi folks,
The subject of compass susceptibility to external interference has been much discussed and many accurate and inaccurate statements put out there as gospel.
As always, we fly conservatively in all circumstances to ensure that any sensor or systems issues we encounter are able to be managed through our risk planning, situational awareness and skills as pilots.
In 9 months of operating the Inspire, I have had two instances of verified compass interference that I thought I'd share.
One of these involved the Inspire being used as a tethered remote camera (not flying, but strung up on cables) and located within a couple of feet of an approximately 20 tonne cast iron impeller housing. Needless to say the Inspire's compass had no hope in that situation!
The last occurrence was in flight while capturing some footage of the ridges and valleys at Bogong. (I posted a quick edit in another thread)
The local geology features extensive formations of Basalt, with significant deposits of magnetic material here and there. There are a number of identified spots in the area where hikers are advised to be wary of compass interference. What was interesting to find was the degree to which the Inspire was affected when navigating 50-80 agl over these areas.
In short, while there was a lot of interference, there was no real issue with flight operations. The app warned of compass issues from time to time as I encountered the magnetic anomalies but continued to operate as normal. Having the UAV in LOS and the occasional glance to the camera view kept me on the intended course and maintained safety as planned.
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