Arduplane v3.8 Automatic waypoint problem

ArduPlane Plane 3.8
1

Hi,
I fly a few days ago X-UAV " Clouds" in Arduplane v3.8 .I used MIssionPlanner v1.3.49 to plan an automatic waypoint task

QQ截图20170830090519.png799×165 10.3 KB

The first command is Takeoff,Set takeoff altitude=40m,Pitch angle=20.
The second command is DO_CHANGE_SPEED,Set airspeed=20m/s.
The third command is LOITER_TO_ALT,Radius=120m,Altitude=200m.

The problem that appears:take off by hand，The plane began to climb, and I watched the ground station show that the airspeed exceeded the stall speed，but the altitude has not yet reached 40m.The plane began to slide on the left and at the same time lost its height.I manually control pull pitch, no effect.Then the plane went out of the sea.

Look forward to everyone’s reply! Thanks!

2

can you post a DF log? If you don’t have one, then the tlog?

3

https://drive.google.com/file/d/0B7lOETMvsixDSU5BY3NNVklOaU0/view?usp=sharing

4

Because the plane went out of the sea, so I only the telemetry log.Do I doubt that the third LIOTER_TO_ALT command is too close to the TAKEOFF point?

5

It looks like poor roll tuning. To confirm, can you post a DF log of a previous flight with the same airframe? Or tlog of previous successful flights?

6

https://share.weiyun.com/576e4f151f0f5f6d856cd8f7840dc725
The DF log is a flight that was Automatic Tuning with AUTOTUNE some time ago.