All modern aircraft are “unstable in forward flight” in pitch.
This is more efficient than stable aircraft. The horizontal stab creates lift taking load off the wing (versus a stable aircraft where the stab creates negative lift and the wing has to generate even more lift to compensate).
Gyro’s and computers make them stable. $75 RC models have this same technology, now... you can put the CG at 50% MAC and they’ll fly great. Don’t try that with out a gyro.
Dont try that with out a gyro.
If you say so.................Okay, I won't..............