Stability and Control characteristics of the Early Mark Spitfires

[ATAG_Dutch]

So with a full tank, trimmed for level flight, pulling back on the stick then releasing to neutral would return the aircraft to level flight.

With a half full tank in the same conditions, pulling back on the stick would need a push on the stick to return to normal flight, and a bigger push when the tank is near empty.

That's my simplistic understanding of longitudinal stability or not as the case may be.

All modern military aircraft are designed with inherent instability which requires a computer to control. Instability is necessary for manoeuvrability.

I totally fail to see the point in this thread, other than to ask the devs to model a changing CofG and longitudinal stability according to fuel load. Is that the point?