My last was a trick question... I've done it. It can be made to fly.

I experimented around a LOT in the late 1970s ( aLOT of people did...) trying to make a sorta-scale X-wing fighter. I did mine in control line and it would fly nice straight and level... however its "turn" radius was abysmal... so no loops.

Wish I still had a copy of my plans of it... may have to go through it again and make one for RC. (new problem of Yaw stability will be a #$%^& Those lines really helped there.)