ORIGINAL: erbroens
Guess that a Horten would be more or less like flying a Zagi flying wing without winglets, and with twin engines... Or a B2 without a flight control system.
Not an a easy task in my opinion too, unless some gyro magic is applied. Even so, the assimetric thrust issue in case of a engine flameout is still unsolvable.
It actually flies better than a Zagi. The model has very unique characteristics, but nothing really odd. It is very stable and a stall is very benign, in that you can pull full up elevator with 30* of deflection and the wing maintains wing level and begins a decent. No gyro's necessary!
I have even flown our prototype with the CG 1/4" aft of the calculated recommended point. It was still very stable and the only bad habits it picked up was that its coordination during turns began to suffer. As long as the CG is at the correct spot or forward of this point, it requires little to no drag rudder for coordination.
the engine out situation I had was with the VERY first power system (only 12lbs of total thrust in a 36lb airplane!). That power system required full power just to maintain level flight and had a very nose heavy CG position (1 1/8" further forward than the calculated position). The one power system also failed after a moderate speed pass. I'm pretty sure with a better power system (such as what is installed now) and the correct airspeed being maintained (and some altitude for extra assistance), It could be flown back around for landing.
It is a very unique airplane and gets allot of attention no matter where it goes. Its an amazingly good flier as well once you figure it out, which we have already figured out for future customers.