On Sep 8, 11:08 am, Frank wrote:

Regarding the altitudes, it really doesn't make too much difference.
In between, you have to interpolate, but its not too bad. Also, if
the rule were very simple (like 200ft/
mile), then it might be possible to program it into soaring software
so you could simply enable a checkbox to change the glide calculations
from whatever you have as a polar to show '200ft per mile'.

Just my $0.02

Frank(TA)

But that's the rub. Again "not too bad" is a relative term. With
high workload and stressful conditions, I've seen plenty of people
lose the ability to do even simple math. My thought is that just
having one number to worry about (e.g. 10 miles and 1550 on the
altimeter) makes it much easier. I can't see any scenario where it
would be worthwhile to go to, say, 7 miles and then try to climb up,
especially when the conditions warrant a safety finish at 10 miles.
No?

As far as having "soaring software" to accomodate this stuff, it's
becoming a non-trivial exercise to support all of the various rules
for different countries. All the more reason to make it a KISS
rule.

P3