FBWA take-off help for tail-wheel planes switched on or off
InformationPlane: take-off, landing, QuadPlanePlane only
What ArduPilot says:
- FBWA tdrag off
- FBWA tdrag mode
A help for taking off by hand in FBWA with a tail-wheel plane. With the switch set to RCn_OPTION 95 high, the elevator is fixed at TKOFF_TDRAG_ELEV percent to keep the tail wheel on the ground for steering: “FBWA tdrag mode”. “FBWA tdrag off” ends it: the airspeed reached TKOFF_TDRAG_SPD1, or the nose rose more than 10° above where it began, or TKOFF_TDRAG_ELEV is 0. The tail then comes up and the plane flies off as usual in FBWA.
Parameters to look at
| Parameter | What it is |
|---|---|
TKOFF_TDRAG_ELEV | Takeoff tail dragger elevator |
TKOFF_TDRAG_SPD1 | Takeoff tail dragger speed1 |
The code that sends it
FBWA tdrag off
ArduPlane/takeoff.cpp Plane::takeoff_tail_hold() · Open in ArduPilot Plane-4.7.1
FBWA tdrag mode
ArduPlane/mode_fbwa.cpp ModeFBWA::update() · Open in ArduPilot Plane-4.7.1