Hi,
We encountered a problem during flight and our VTOL aircraft crashed from the 300 meters. We couldn’t get the dataflash logs because aircraft burned. Only log available from the flight is the telemetry log.
We were using the aircraft since 2021, it had CubeBlack as hardware and arduplane version was 4.1.0. Total flight time with this version is more than 30 hours. For development purposes we updated the firmware to 4.5.6, and we manually updated gains and other parameters that has name changes and unit changes came with the version update.
After this update and configuration changes we completed two flights in AUTO mode that takes around 15-20mins and we encountered no problem.
Third flight was a different flight than other two. it takes around 1 hour to complete. During flight everything was going normal but at the 25 mins of the flight autopilot resetted 2 times and caused a crash. What can be the reason of this problem ?
12/20/2024 4:02:14 PM : ArduPilot Ready
12/20/2024 4:02:14 PM : IE2048 IEC1 TN:
12/20/2024 4:02:14 PM : WDG: T-3 SL0 FL0 FT0 FA0 FTP0 FLR0 FICSR0 MM0 MC0
12/20/2024 4:02:14 PM : Airspeed: skipping cal
12/20/2024 4:02:14 PM : MS4525[0]: Found bus 0 addr 0x28
12/20/2024 4:02:14 PM : Baro: skipping calibration after WDG reset
12/20/2024 4:02:14 PM : Restored watchdog attitude 43 -24 17
12/20/2024 4:02:14 PM : Skipping INS calibration
12/20/2024 4:02:14 PM : Ground start
12/20/2024 4:02:14 PM : QuadPlane initialised, Frame: QUAD/X
12/20/2024 4:02:13 PM : Forcing logging for watchdog reset
12/20/2024 4:02:10 PM : GPS 1: detected as u-blox at 230400 baud
12/20/2024 4:02:02 PM : Internal Errors 0x800
12/20/2024 4:02:02 PM : RCOut: PWM:1-14
12/20/2024 4:02:02 PM : AHRS: DCM active
12/20/2024 4:02:02 PM : Restored watchdog home
12/20/2024 4:02:02 PM : ArduPilot Ready
12/20/2024 4:02:02 PM : E0 IEC0 TN:
12/20/2024 4:02:02 PM : WDG: T2 SL0 FL0 FT0 FA0 FTP0 FLR0 FICSR0 MM0 MC0 I
12/20/2024 4:02:02 PM : Airspeed: skipping cal
12/20/2024 4:02:02 PM : MS4525[0]: Found bus 0 addr 0x28
12/20/2024 4:02:02 PM : Baro: skipping calibration after WDG reset
12/20/2024 4:02:02 PM : Restored watchdog attitude -3 3 -121
12/20/2024 4:02:02 PM : Skipping INS calibration
12/20/2024 4:02:02 PM : Ground start
12/20/2024 4:02:02 PM : QuadPlane initialised, Frame: QUAD/X
12/20/2024 4:02:01 PM : Forcing logging for watchdog reset
Telemetry Log: