[Tail-Sitter]All outputs are reset to 0 after transition into fixed wing mode

[Jiangyou0811]

The takeoff procedure is:

1. Set mode switch to Manual
2. Increase the throttle, the UAV takeoffs as a Rotary-wing.
3. Keep increase the throttle, the UAV increase its speed and altitude.
4. At certain point, it transitted into fixed-wing mode and lost control immidietely. The UAV dropped down like a brick.

As we can see in the picture when the tail-sitter transitted into fixed-wing mode (vtol_vehicle_status_0.vtol_in_rw_mode becomes false), all outputs are reset to 0, RC control is impossible. When "landed" is detected, all controls return to normal. We are sure radio control is still alive because we are using FrSky transmitter, it will call out "signal critical, telemetry lost". But we didn't hear that.

We cannot reproduce this problem on the ground. Everything seems normal except the crash. here is the log file. Thank you very much if someone can figure out what's wrong with this or if we had missed something. log_89_2018-9-27-14-07-46.zip

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

Closing as stale.