On Jun 2, 5:45*am, Nine Bravo Ground wrote:
Dave - you made me curious. Does that mean if you are abeam of the
home airport with a decent distance to run to a downwind turnpoint and
back to the finish that the SN-10 will calculate altitude margin based
on a single McCready setting for the entire way home or separate
McCready solutions for each leg - and if so how does the pilot input
separate values for each leg?

Last Monday's club contest task put us all in exactly that position.
The last turn of the area task was downwind of the finish and the
winds were quite strong. It was blue in the last turn area so most of
us made final glide altitude before entering the last area and went in
just deep enough to make the best use of the altitude. For me the
most difficult part of the puzzle is knowing what the winds will be on
the downwind leg and whether it will be the same on the up wind leg to
the finish. I have never flown with a glide computer that does a good
job of knowing the winds at all altitudes and uses that wind profile,
rather than a fixed value, for the final glide solution.

As I was already over min time and not wishing to landout because the
head wind on the last leg was stronger than expected I elected to turn
early and fly home fast. I have no doubt I could have earned a few
more points by going a bit further and flying slower on the last leg.

Andy