Eagle Tree Vector - Manual (Page 65)

USER GUIDE
65
6.3.1 Multirotor in-air leveling
Slight adjustments to multirotor level offset can be corrected as follows: while hovering in a non-GPS 2D
flight mode (2D or 2D with Altitude Hold, but NOT Center Stick mode), and when there is no wind, adjust
your aileron and elevator radio trims so that the multirotor is hovering in a stationary position.
Then, land the multirotor, disarm, and toggle the mode switch 5 times. At this point your level trims have been
saved. DO NOT undo the changes to your radio trims after doing these steps.
In-air leveling does not work with Center Stick flight mode.
6.3.2 Fixed Wing in-air leveling
If your model is not flying straight and level in 2D Mode WITHOUT Hold, first level out the model with your
control stick, then (while keeping the model level with the stick) toggle the mode switch 5 times. This
records the level flight orientation for your model.
The Vector remembers your control stick position the moment you first start to move the mode switch.
So, you don’t need to worry about keeping the model perfectly level while you toggle the switch 5 times. It
only needs to be level at the start of the toggle sequence.
6.3.3 Optimal Fixed Wing leveling
If you want to tune your model for more efficient flight, it is recommended that you follow these steps:
a) First fly your model with stabilization off (or with overall gain turned off with the gain knob) and
adjust your radio trims for level flight.
b) Land, and rerun the Receiver Analysis Wizard so that the Vector can learn about the new radio trim
settings.
c) Perform the in-air leveling procedure in section 6.3.2 above, if needed.
6.4 Return to Home Testing and Operation
6.4.1 RTH Limitations
Please be aware of the following RTH limitations:
d) If there are obstacles in the path between the model and home, RTH will not be able to avoid them. You
are responsible for your model, even when RTH is engaged!
e) If the wind speed is higher than the RTH speed of the model, determined by its settings, the model will
NOT return home if flying into the wind.
f) RTH will NOT engage if the GPS signal quality is not adequate. “Land” safety mode will engage instead.
For multirotors, additionally RTH will only work correctly if your compass is correctly installed and
calibrated, as described elsewhere in this document.
For fixed wing, RTH throttle control will not engage if your altitude reading is less than about 60
feet/20 meters, or if your speed is less than 3 MPH or 3K/H, when RTH is triggered. The throttle will
remain off in these conditions. Also, the RTH throttle will not engage until you have “armed” the throttle
by moving the throttle stick up at least once after power-up.