cs_
lvl.1
Switzerland
Offline
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Hi all,
Today, I did a mapping flight with DJI GS and a Matrice 600 Pro. In the mapping area, there is an obstacle with a hight of 25 meters above ground with an additional elevation difference of 3 meters in comparison to my start point (measured with an RTK GPS). I therefore performed the flight at 31 m in relation to the starting point, to have a safe distance of 3 m to the obstacle. To be super save, I did a preliminar test flight with a Phantom 4 Pro with exactly the same flight plan, and it went perfectly, I had plenty of space between the P4P and the obstacle.
So I took of with the M600. Shortly after takeoff, I realized that the M600 was way below the programmed flight height and therefore the upper edge of the obstacle, and could stop the M600 in the literarly last second before crashing into the obstacle. I flow it manually back to the starting point (exact same position as takeoff), and realized that the indicated height was obviously wrong (10 m height indicated while hovering shortly above ground). Back in the office, I checked the flight logs and realized a tremendous drift in the air pressure altitude measurements (more than 8 meters during flight, more than 10 meters while standing on the takeoff point).
Now the question:
- anybody else having similar issues, and if so,
- is this a thing we have to deal with, or a guarantee claim?
- is there a possibility to check stability of telemetry values before takeoff?
Thanks in advance for any help,
Cheers,
cs_
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