- Joined
- Apr 22, 2017
- Messages
- 63
- Reaction score
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- Age
- 69
I'm hoping someone could review my flight log and tell me the significance of a couple of events I encountered today. After an uneventful flight, to a little over 17,000 feet away, everything went south. It forced me to land in the desert, then it took an hour to find it but to my amazement it's cam through largely unscathed....sort of.
Looking at the log, at about 16:40 into the flight I see that one of the battery cells is about 2 or 3 tenths of a volt lower than the others, and the text was in orange for that cell. About 10 seconds later I get a warning of "Ultrasonic System Error". Then other errors followed.Also, I had went ahead and let it do an automatic RTH, then I turned my attention away for a moment, and then I look back and my craft was flying AWAY from home, out over a country club where I did NOT want it to go down. Put into ATI mode, and managed to get it back over the open desert, before it landed.
Does that 2 or 3 tenths of a volt difference make a that much of a difference ? Was that the cause of the errors ? I never knew the craft had anything "Ultrasonic" on it. But today researching it it turns out to be the Vision Positioning System. I've got another moduIe I could put on it, but when I put a fresh battery in, everything checked out ok, no errors. Hence my question was the whole thing due to that one low cell ?
Oh yea.....that was a new battery too.
My log is uploaded for viewing, I'd appreciate any pointers.
Thanks
Looking at the log, at about 16:40 into the flight I see that one of the battery cells is about 2 or 3 tenths of a volt lower than the others, and the text was in orange for that cell. About 10 seconds later I get a warning of "Ultrasonic System Error". Then other errors followed.Also, I had went ahead and let it do an automatic RTH, then I turned my attention away for a moment, and then I look back and my craft was flying AWAY from home, out over a country club where I did NOT want it to go down. Put into ATI mode, and managed to get it back over the open desert, before it landed.
Does that 2 or 3 tenths of a volt difference make a that much of a difference ? Was that the cause of the errors ? I never knew the craft had anything "Ultrasonic" on it. But today researching it it turns out to be the Vision Positioning System. I've got another moduIe I could put on it, but when I put a fresh battery in, everything checked out ok, no errors. Hence my question was the whole thing due to that one low cell ?
Oh yea.....that was a new battery too.
My log is uploaded for viewing, I'd appreciate any pointers.
Thanks