Please be gentle with me, chaps, it's an awful long time since I did this theory work, and it's more than possible that I misunderstand the basics here. Added to that, I fly the type of aircraft with the propeller on top.
Natural longitudinal stability depends on the variation of pitching moment with angle of attack
When we are talking about longitudinal stability, does that mean stability about the longitudinal axis? If it does, then don't the ailerons sort that out? Pitch is concerned with the lateral axis.
Or am I barking up the wrong tree?
Or simply barking?