RTL Mode (Return To Launch)¶
In RTL mode the plane will return to its home location (the point where the plane armed - assuming it had GPS lock) and loiter there until given alternate intructions (or it runs out of fuel!). As with AUTO mode you can also “nudge” the aircraft manually in this mode using stick mixing. The target altitude for RTL mode is set using the ALT_HOLD_RTL parameter in centimeters.
Alternatively, you may configure the plane to return to a Rally Point, rather than the home location.
“Home” position is always supposed to be your Plane’s actual GPS takeoff location:
- It is very important to acquire GPS lock before arming in order for RTL, Loiter, Auto or any GPS dependent mode to work properly.
- For Plane the home position is initially established at the time the
plane acquires its GPS lock. It is then continuously updated as long as
the autopilot is disarmed.
- This means if you execute an RTL in Plane, it will return to the location where it was when it was armed - assuming it had acquired GPS lock.
- Consider the use of Rally Points to avoid returning directly to your arming point on RTL