"Robert" wrote in message ...
In the publicity photo's of ship landing's the V-22 looks like one prop is
in "ground effect" and the other one is hanging over the side of the ship
so
it's NOT in "ground effect"

Does anyone know how big of a problem this is? Does it limit the
cross-wind performance? So even though it's vtol the ship has to be
pointed into the wind etc?

Greetings Robert,

We looked at this pretty hard, on the first sea trials back on the WASP,
many years ago now with the FSD aircraft. As predicted by all the work-ups
to the event(s), it's just a matter of a gentle cyclic input against the
roll, with the rate of the input being proportional to the rate at which
you're crossing the deck edge. The test pilots involved did it without
having to think about it. In hover over the deck, at least in the old FSD
birds, you could expect abut 1/4 inches of stick trim to cancel out the
roll. It does not limit the effective cross-wind performance, as there is
more control margin left even with that little off-set than required for all
rated cross-wind conditions. Every knot of forward ship is a bonus, works
just fine with zero knots ships speed.

But your observation is correct, sticks centered on the deck will produce a
roll-off to the left if not corrected for.

Erk