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Red Arrow

Icemanwbs

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Jul 31, 2018
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#1
Anyone know why my spark faces one way, yet the red arrow on controller faces different ? 20181017_085108.jpg
 

BudWalker

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Jul 6, 2017
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#9
Anyone know why my spark faces one way, yet the red arrow on controller faces different ? View attachment 7278
If the red arrow heading indicator is not consistent with the AC's actual orientation that means that the Yaw value is incorrect. Launching under this condition will likely result in erratic flight, possibly a fly away. The only way to fix this is to move the AC to another location. Calibrating the compass won't fix this.

I suspect that there is rebar or some other ferrous material in the asphalt directly under the Spark.
 

Icemanwbs

Active Member
Joined
Jul 31, 2018
Messages
40
Likes
4
Age
56
#10
If the red arrow heading indicator is not consistent with the AC's actual orientation that means that the Yaw value is incorrect. Launching under this condition will likely result in erratic flight, possibly a fly away. The only way to fix this is to move the AC to another location. Calibrating the compass won't fix this.

I suspect that there is rebar or some other ferrous material in the asphalt directly under the Spark.
That may be case in that situation, but even does it on my lawn. Idk, I'm new to all this so I'm sure I'll figure it out sooner or later
 

BudWalker

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#11
That may be case in that situation, but even does it on my lawn. Idk, I'm new to all this so I'm sure I'll figure it out sooner or later
The red arrow shows what the AC thinks the heading is (Yaw). If it's inconsistent with the actual heading that's usually an indication that the Spark is sitting in a geomagnetic distortion. I.e., it's the location and not the Spark's compass that causes the discrepancy. But, if you're getting this discrepancy everywhere then the cause must be something else. Does it happen at every location? How much is the discrepancy? Has it always done this? Have you added an external device like a tracker?
 
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