I am pretty new to Arduplane - I used Arducopter already but regarding flight dynamics a plane is a different thing…
I installed Arduplane on a Matek F405-wing and setup everything correctly for the frame type (just AIL).
The parameters are more or less default and no tuning had been done yet.
I know, I should try it in manual first - and I will do that after the glue is dry
But I am really interested in what someone experienced can see from the logs. It was crashing so badly that I don´t think it has something to do with poor PID tuning.
I’m still new at reading logs so take this for what it’s worth:
Double check that your centre of gravity is correct.
It also looks to me like you had a pretty aggressive angle when you launched. I’m guessing you hand launched? If so I think you had it too nose high so it had a hard time building up speed before it really got going.
My CG was correct another launch with lower pitch angle ended with almost same result.
I now assume:
Control surfaces have a bit too less travel
Motor power is a bit too less for the weight of the plane to gain enough speed fast enough
The 100% throttle from the beginning applies to much torgue to the plane and thats why the roll cant get compensated. And perhaps that heavy use of Aileron costs me pitch. I want to try now some smoother start with TKOFF_THR_SLEW
But there is still something I don´t understand:
The throttle get´s lowered during takeoff for some short periods - and I have no idea why that happens. How can I find out why/based on what configuration Ardupilot did that?