Why Full throttle when switched to Auto?

ArduPlane Plane 3.8
1

I really do not understand why the Autopilot when switching from FBWA to Auto put throttle to zero for a very short time and the to full throttle and a lot of pitch even if the altitude is very close 29,2 meters to the target altitude of Tecs_Hdem 30 meters.
The range finder readings at the beginning of Auto mode are not good because the plane rolls to go to next waypoint.

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Finally the plane went to 43 meters, using a lot of battery, for nothing.

Is there a way to avoid that behavior ?

BTW if limit max throttle othe rthan 100 % I cannot launch anymore my plane in FBWA .

2

Launch it in AUTO. If you are having trouble launching then you may be under-powered.

FBWA means you control the throttle, AUTO and FBWB means autopilot controls the throttle. So the throttle stick is interpreted differently. I suggest using FBWB.

3

Thanks for your reply.

IMO there should be also a parameter for max throttle when the plane is not flying yet, personally for manual take off , I do not like at all AUTO Take OFF.

I will try to fly in FBWB mode and see if switching to AUTO will cause the same behavior.

4

What’s wrong with auto takeoff?

5

Nothing is wrong with Auto take off , I just prefer to take off manually or in FBWA , it is a way to check if the plane react correctly to commands, an old habit that came from years of multirotors tests.

In fact I never used till now auto take off.

The suggestion of using FBWB before switching to Auto solve the problem , the transition to Auto for throttle level is much more smooth , thanks !