yoengel
Second Officer
Flight distance : 2370988 ft
United States
Offline
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Seamus Posted at 2017-2-19 21:18
I encountered a similar issue today. I lost line of sight and attempted to use RTH. The home point was directly into the sun and the Mavic began ascending and alerting to the presence of an obstacle. I soon realized the Mavic climbed to an uncomfortable altitude in an attempt to avoid whatever it was seeing. Right around this time, the low battery alert began chirping away as well. Being new to the Mavic I was sweating bullets and was unsure of the problem; I thought I was about to lose my new drone on just its third flight. I cancelled the RTH, regained line of sight, and began to bring the Mavic back down. As it descended, the Mavic continued to alert the presence of an obstacle and would not respond to commands to move towards my position. As it approached 200 ft AGL the Mavic regained responsiveness and I was able to bring it home. It wasn't until later in the day I realized the sun was the "obstacle". Today I learned how quickly I can lose line of sight when glancing down at the controller and the value of a dedicated visual observer. I also learned to turn off front facing obstacle avoidance when flying above the tallest obstacles.
I was actually setting for a shot and flying it low, maybe 5 feet AGL, and it would keep stopping because of an unseen obstacle. I then realized that it was facing the sun. I never encountered this behavior before. |
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