Hi, does anyone know what causes "speed error" in flight log???
I have more and more "speed errors" in every next flight. P3p than goes to ATTI mode and reports Compass Error...
Thanks
I can not fly with such a problem, which I do not know when it will appear.
I often fly over people, around objects, or recording events ... for work ...I can not waste my time trying to fly a non-controlling aircraft, to have no safety, to land it and fly it again.
Bojtren Posted at 2018-7-16 12:38
I can not fly with such a problem, which I do not know when it will appear.
I often fly over people, around objects, or recording events ... for work ...I can not waste my time trying to fly a non-controlling aircraft, to have no safety, to land it and fly it again.
Looking at your flight log, it appears you took off from the surface of a basketball court, or something similar. The errors you got during flight are normally caused by taking off from a surface that has steel or iron in it. Try flying from a grass surface.
Geebax Posted at 2018-7-16 15:42
Looking at your flight log, it appears you took off from the surface of a basketball court, or something similar. The errors you got during flight are normally caused by taking off from a surface that has steel or iron in it. Try flying from a grass surface.
This playground is аsphalt. No iron in it.
If there was iron, then before taking off, there would have been a problem with the compass rather than in flight.
And I fly here often and in the past 4 years there was no problem with the compass here.
I have a compass error and speed error on many different locations.
Bojtren Posted at 2018-7-19 05:19
This playground is аsphalt. No iron in it.
If there was iron, then before taking off, there would have been a problem with the compass rather than in flight.
And I fly here often and in the past 4 years there was no problem with the compass here.
Actually no. If you take off from an area that has steel or iron close by, the compass error does not show up until you are in the air.
'I have a compass error and speed error on many different locations.'
Then there is something wrong with the way you are launching the aircraft. Do you take off from the roof of the car, or start the aircraft up while inside the car before taking it out and putting it on the ground?
Bojtren Posted at 2018-7-19 05:19
This playground is аsphalt. No iron in it.
If there was iron, then before taking off, there would have been a problem with the compass rather than in flight.
And I fly here often and in the past 4 years there was no problem with the compass here.
You would be surprised what sort of "buried treasure" you will find in such locations, from scrap metal to underground pipes and power. A historic view on Google Earth shows the home point was at the edge of a plowed field and all sorts of tools and broken machinery could be discarded there.
It can seem fine while on the ground and have problems develop shortly after in flight. If you are setting up for takeoff while sitting on a magnet or ferro-magnetic material, the aircraft can "zero" out the magnetic readings, thinking this is the correct baseline readings. As it flies away the true magnetic conditions cause confusion. It is similar to the way you can reset a kitchen scale the weight to zero, despite there being weight on the platform.
This doesn't seem to be the explanation for this flight though, as it flew faultlessly for quite a while. When the errors started to occur we see a bizarre flight track though. Quite localized and almost as though you flew into a narrow corridor that upset the flight controls.