Hey DIY Drones,
This is my first post here, but I felt I would share my story and log with the community. Today I was out for a rather routine flight of my Iris+ from 3DRobotics that included an Auto Flight followed by some manual flight in Loiter mode directly after. No heavy wind or outside weather factors to worry about. A nice 70 degree evening here in St. Pete, Florida. Normally I fly the Iris+ with the Tarrot 2D gimbal and a GoPro but thankfully today I did not. I was getting my flight plan ready for a filming I was planning next week and was getting down the flightpath before mapping out the angles of the shots.
After flying in auto mode for the duration of my flight plan, I took over in loiter mode to do a short flight around a fountain I planned to shoot. I had just had the aircraft fly the same path in auto mode and I like to practice my flights manually incase I have to assume control in the middle of a shoot. About halfway through the maneuver the Iris+ started to wobble and descend like it was losing power suddenly. I kicked the throttle to full power and directed the drone away from the water (knowing a crash was almost imminent) but the drone failed to react to the controls and crashed in the lake I was flying over. About 20 feet from shore too. *Insert sad face* The drone now sits at the bottom of the lake in about 10 feet of water. I was unable to recover the aircraft today but and hoping to in the morning.
Attached is a link to the log of the flight. So far looking at the data I cannot see anything to explain the sudden loss of control. The only thing I have really notice was a drop in battery voltage at the end of the flight, but I am unable to tell if this is because of the loss of the aircraft or there really was a sudden loss of battery voltage. The HUD never told me I had less than 70% battery during the flight and even so a loss of battery should have caused a return to launch.
If anyone out there has idea what might have caused this crash, I'll take any input. With all luck I will recover the aircraft in the morning, but with the craft sitting in 10 feet of water for around 18 hours I am assuming a total loss. Sad. This craft seemed so stable in all other flights I've done with it (30+) and it was becoming a workhorse for me.
Thanks to any who help!