This was actually pretty non trivial.
I've just written up full documentation here: http://marc.merlins.org/perso/rc/post_2015-08-04_Using-Flaperons-With-Ardupilot.html
My X-UAV Talon should now be easier to land :)
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Marc,
We tested some time ago and made some flights. Basically when some flaperon percentage was applied the aircraft became really unstable in pitch . It was so unstable that we were force to "retract" them almost inmediately.
The Talon was well tuned with autotune and level 7.
Hope you have better luck and we may give it a try again
Martin, I've used flaperons on other planes before and not gotten tip stall issues, however I haven't done extensive testing on the Talon yet.
However, on my Cularis which was prone to tip stall out of the box, tip stall was solved by bending the ailerons so that the tip of the aileron pointed up a bit.
If I have this issue, I'll bend the Talon ailerons too.
I haven't had this problem yet. Can you describe in which way the aircraft was less controllable?
Did you have a problem with full flaps?
What kind of loss of control did you get?
I configured and used flaperons in my talon some time ago. After some testing I stop using ithem.
The aircraft was very uncontrollable . didn't you have such problems?
Yes, the neutral position of both ailerons moves down with flaperon mixing.
Spoilerons would be safer, but not as effective.
The problem with flaperons is that they make the wing more prone to tip stall. Crow-flaps on the other hand eliminate any tip stall tendencies.
Hi, Marc, Could you please share your param file?
The ailerons feed in some flap..... flaperons no extra surfaces.
Hi Marc, for plane dummies like I am, can you explain more about where are your flaperons control surfaces on your XUAV as it seems you just have the normal ailerons control surfaces? Aren't they supposed to be additional control surfaces, independent from the ailerons?
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