The other day during flight testing I performed an auto mission with my quad plane. The aircraft hovered up just fine and did the transition like it was suppose to. After completing the transition the aircraft VIOLENTLY pitched up. The aircraft was only around 60 feet AGL and stalled and crashed. I tried to save it in manual, but it was too low too slow and heavy. By the looks of the logs it looks like the VTOL motors were at idle when this happened. I am running Arduplane 3.7.
This board is for the PX4 firmware, please consult with the ardupilot people.
Perhaps noteworthy is that we emply quadchute, a failsafe to ‘catch’ the vtol in quad mode if it comes below a certain altitude.