The major problem with current HUD systems is that they are projected onto a
screen screwed to the instrument panel turtledeck. Fine if you are a fighter
jock and want to keep your eye on the bandit in front of you. Also good for
IFR types who actually don't need to look out the window anyway.

What is really needed in sailplanes are head mounted displays that keep an
image hovering in front of the pilot wherever his head is. A sailplane pilot
only looking out ahead is almost as bad as one focussed on a PDA strapped to
his leg.


Ian