Ferruccio Vicari

Proposal to fix issue reported here: https://github.com/ArduPilot/ardupilot/issues/27949

## Bug report **Issue details** _During setup of a customer helicopter with DDVP tail rotor type, it has been found out that tail rotor pitch actuator is not working. Log...

AC_InputManager_Heli: collective transition ramp

5

Adds 0.5s ramp on the collective output when switching to (and between) manual modes. Also involves a rework of the pre-existent stabilize mode to acro mode collective transitioning