"R&A Kyle" wrote

A typical AI display is "inside out", ie the view is from inside
the plane looking out. Some (Russian) aircraft use the reverse
display, ie a fixed horizon and a moving airplane graphic.

And then there are some Russian aircraft (YAK-52) that came from
The Ukraine with an "inside out" display, but one that moves in
the opposite direction vertically than we find in most normal AIs.
The "sky" is on the bottom half and the "ground" is on the upper
half of the sphere. This arrangement (fully gimbled??) had the
advantage of not tumbling when doing aerobatics.

Bob Moore