"Andrew Sarangan" wrote in message
ups.com...
[...] This is rather surprising to me because
it seems that runway slope is almost irrelevant to landing distance
compared to the effects of wind.

As I pointed out earlier, this makes perfect sense. Landing distance is a
function of deceleration and of initial kinetic energy. Slope affects
deceleration in a linear way, while wind affects the kinetic energy in an
exponential way. Furthermore, the net effect of the wind is doubled when
comparing headwind to tailwind operations.

In the example I used, for a typical light airplane, a 10 knot wind produces
a landing distance that is different by a factor of two, comparing headwind
to tailwind. That is, it takes twice as much distance to come to a stop
landing with a tailwind than landing with a headwind. It would take a
pretty significant slope indeed to increase deceleration to the point that
the landing distance was cut in half.

Pete